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Protection Circuit patents

      

This page is updated frequently with new Protection Circuit-related patent applications.




 Protection circuit and  flyback power converter patent thumbnailProtection circuit and flyback power converter
A protection circuit for a power converter is provided. The protection circuit includes a sensor circuit, a detection circuit and an initial protection circuit.
Semiconductor Components Industries, Llc


 Dc-to-dc converter patent thumbnailDc-to-dc converter
An object of the present disclosure is to provide a dc-to-dc converter with a simple circuit configuration that continues the supply of direct current power to a load without providing a redundant power supply circuit even if a switching transistor operates abnormally in the active state. A protection circuit unit that converts an input voltage of a direct current input power supply to a different direct current voltage obtained by stepping down the input voltage, as in a direct current voltage conversion circuit unit including a first switching transistor, is connected between the direct current voltage conversion circuit unit and the direct current input power supply and, if the first switching transistor operates in an active state, direct current power of the direct current voltage converted by the protection circuit unit is supplied to a load causing the first switching transistor to maintain operating in the active state..
Smk Corporation


 Over-voltage protection circuit patent thumbnailOver-voltage protection circuit
A device is disclosed that includes a first transistor, a second transistor, and a first pode device. The second transistor is electrically coupled to the first transistor.
Taiwan Semiconductor Manufacturing Co., Ltd.


 Dc-dc converter patent thumbnailDc-dc converter
A dc-dc converter includes a filter circuit, a full-bridge circuit connected to the filter circuit, and a transformer having a primary winding and a secondary winding, the primary winding being connected to the full-bridge circuit. The full-bridge circuit includes first to fourth semiconductor switches.
Murata Manufacturing Co., Ltd.


 Battery protection board, battery and mobile terminal patent thumbnailBattery protection board, battery and mobile terminal
Embodiments of the present disclosure provide a battery protection board, a battery and a mobile terminal. A battery protection board includes a protection circuit and a detection circuit.
Guangdong Oppo Mobile Telecommunications Corp., Ltd.


 Battery protection board, battery and mobile terminal patent thumbnailBattery protection board, battery and mobile terminal
Embodiments of the present disclosure provide a battery protection board, a battery and a mobile terminal. The battery protection board includes a first protection circuit, a current sensing element and a battery voltmeter.
Guangdong Oppo Mobile Telecommunications Corp., Ltd.


 Dynamic esd protection scheme patent thumbnailDynamic esd protection scheme
The present disclosure relates to an electrostatic discharge (esd) protection circuit including a dynamic field plate bias circuit, and associated methods. In some embodiments, the esd protection circuit includes a bipolar junction transistor (bjt) based esd protection circuit including a field plate configured to increase a breakdown voltage of the bjt based esd protection circuit.
Taiwan Semiconductor Manufacturing Co., Ltd.


 Selective protection circuit and method, and power supply system patent thumbnailSelective protection circuit and method, and power supply system
A selective protection circuit includes a current-limiting module and a control module, where the current-limiting module includes a switch unit, and the switch unit includes a first end, a second end, and a control end; the first end is connected to a positive electrode of a bus voltage of an hvdc power supply, and the second end is connected to a positive electrode of a power supply of a voltage pre-regulator circuit in a load branch connected to the current-limiting module; the control end is connected to the control module; and the control module is configured to output a control signal to the control end when a value of a total current flowing through the switch unit is greater than or equal to a preset threshold, so as to switch off the switch unit.. .
Huawei Technologies Co., Ltd.


 Semiconductor device patent thumbnailSemiconductor device
A semiconductor device according to related art has a problem that a clamp voltage that clamps an output voltage cannot adaptively vary in accordance with a power supply voltage, and it is thus not possible to reduce heating of a semiconductor chip to a sufficiently low level. According to one embodiment, a semiconductor device includes a drive circuit (10) that controls on and off of an output transistor (13) and an overvoltage protection circuit (12) that controls a conductive state of the output transistor (13) when an output voltage vout reaches a clamp voltage, and the overvoltage protection circuit (12) has a circuit structure that sets the clamp voltage to vary in proportion to a power supply voltage vdd..
Renesas Electronics Corporation


 Secured body of memory card reader patent thumbnailSecured body of memory card reader
A memory card reader body has a generally rectangular parallelepiped shape and a slot for inserting a memory card. The reader body furthermore includes a housing for receiving a memory card connector, and at least one protection circuit.
Ingenico Group


Multi-channel led driver with overheating protection capabilities

An apparatus to drive a multi-channel light emitting diode (led) array includes switching transistors connected to led strings of the multi-channel led array, error amplifiers connected to the switching transistors, each of the error amplifiers being configured to control current flowing through the led string to have a target magnitude, and overheating protection circuits connected to the switching transistors, each of the overheating protection circuits being configured to regulate current flowing through a respective switching transistor to have a magnitude less than or equal to the target magnitude.. .
Magnachip Semiconductor, Ltd.

Distribution block with integrated surge protective device

A modular distribution block for a high-current power system includes a ground module and one or more phase modules. The ground module includes a grounding clamp configured to electrically and mechanically connect to a din rail and to retain the distribution block in place with respect to the din rail.
Erico International Corporation

Digital power supply protection circuit, and apparatus

A digital power supply protection circuit includes: a signal preprocessing circuit, configured to receive an overcurrent signal and a first inceptive impulse clock timing, and perform preprocessing on the overcurrent signal according to the first inceptive impulse clock timing so as to obtain a first reference signal a signal generation circuit, configured to receive the first inceptive impulse clock timing, count time duration between a rising edge of the first inceptive impulse clock timing and a rising edge of the first reference signal so as to obtain a first time duration, and upon the first time duration is greater than a second time duration, generate a first disabling signal by delaying the rising edge of the first inceptive impulse clock timing for the second time duration; and a clock timing adjustment circuit, configured to adjust the first inceptive impulse clock timing according to the first disabling signal.. .
Huawei Technologies Co., Ltd.

Integrated circuit and electrostatic discharge protection circuit thereof

An electrostatic discharge protection circuit is provided. The electrostatic discharge protection circuit includes a first metal-oxide-semiconductor (mos) transistor, a second mos transistor, and a third mos transistor.
Vanguard International Semiconductor Corporation

Semiconductor integrated circuit device including an electrostatic discharge protection circuit

A semiconductor integrated circuit device having a first clamping circuit, a second clamping circuit, a third clamping circuit, a first path-changing line and a second path-changing line. The first clamping circuit may be connected between an input/output pad and a power pad.
Sk Hynix Inc.

Battery protection circuit and method

A method and apparatus for a battery protection circuit. One embodiment provides a method for protecting a battery including receiving, with a comparator, a first voltage, the first voltage including a switch voltage across a current limiting switch provided on a current path of a battery and coupled to a current limiting control circuit to limit current output by the battery.
Motorola Solutions, Inc.

Semiconductor device, liquid crystal display panel, and mobile information terminal

A semiconductor device includes a plurality of sets of external drive terminals in a marginal region along one long side of a rectangular semiconductor substrate, a plurality of sets of esd protection circuits arranged in the marginal region and coupled to corresponding sets of the drive terminals, and a plurality of output circuits coupled to corresponding sets of the drive terminals. Each set of drive terminals in a plurality of n columns along a y direction is laid out in a staggered arrangement with drive terminals in adjacent columns shifted relative to each other.
Renesas Electronics Corporation

Electro-static discharge protection circuit

This disclosure provides an esd protection circuit coupled to a first and a second terminals of a differential-pair circuit. The esd protection circuit includes: an esd sensing unit coupled to the first and the second terminals and sensing electrical changes at the first and the second terminals to generate a first trigger signal; and a first discharging unit coupled to the esd sensing unit and turning on a first discharging path according to the first trigger signal..
Realtek Semiconductor Corporation

Poly silicon based interface protection

A semiconductor device includes an active device of a transistor disposed in a semiconductor substrate. An isolation layer is disposed at the semiconductor substrate, and a polysilicon substrate layer is disposed over the isolation layer and the semiconductor substrate.
Infineon Technologies Ag

Bus driver / line driver

A bus driver is provided that can withstand over voltages being applied to its output terminal without the protection circuit detracting from the voltage swing that can be provided by the driver. The circuit arrangement also allows transistors having good on state resistance and large tolerance of drain-to-source voltages to be used..
Analog Devices Global

Led lighting system

The invention describes an led lighting system (1) comprising a wireless communication arrangement (11, 12) for wireless transfer of signals (d10_11, d11_12, d4_12, d5_12) between devices (10, 11, 12, 4, 5) of the led lighting system (1); at least one led lamp (10) connectable to a mains power supply (2), which led lamp (10) comprises a driver arrangement (100) with a control unit (102) for controlling the led lamp (10) according to a received signal (d10_11); a phase-cut detector (103a, 103b, 103c) realized to detect a phase-cut input (vcut) to the led lamp (10); and a protection circuit (106) realized to prevent operation of the led lamp (10) with the phase-cut input (vcut) if the phase-cut angle of the phase-cut input (vcut) exceeds a critical threshold, wherein said protection circuit (106) is adapted to prevent an exposure of the led lamp to the phase-cut input. The invention further describes an led lamp (10) comprising a driver arrangement (100); and a method of controlling an led lighting system (1)..

Semiconductor device including amplifier

Disclosed here is an apparatus that comprises an amplifier having first and second input nodes, first and second resistors, a first electrostatic discharge protection circuit coupled between the first input node and the first resistor, and a second electrostatic discharge protection circuit coupled between the second input node and the second resistor.. .

Dc-dc converter

There is provided a dc-dc converter which is safe and secure, but yet with low power consumption. The dc-dc converter is configured such that an overcurrent protection circuit is operated intermittently only for a predetermined period of time based on a signal output from an output control circuit to turn on a switching element..

Dc-dc converter

There is provided a dc-dc converter which is safe and secure, but yet with low power consumption. The dc-dc converter is configured to monitor the output voltage of an error amplifier, and detect that the output voltage of the error amplifier becomes a fixed value or smaller to drive an overheat protection circuit and a supply voltage monitoring circuit intermittently..

Enablement of device power-on with proper assembly

An electronic device is configured with sub-assemblies including a main logic board, flexible printed circuit, and dual battery packs that are assembled together with electrical connectors to enable power from the battery packs to flow over a power bus that is distributed along the flexible printed circuit and main logic board. A protection circuit module (pcm) in each battery pack is configured to determine a state of each of the connections among the sub-assemblies (i.e., whether or not properly assembled to provide electrical continuity through the connector) so that power from the battery packs is switched on to the power bus only when electrical continuity is verified at each of the connectors.

Over-current protection in multiphase dc-dc switching regulators

The disclosure provides an over-current protection circuit. A signal generating block in the over-current protection circuit generates one or more input voltages, a summed voltage and an average voltage in response to one or more differential voltages.

Multiple voltage output battery case with protection and alarm system

A battery holder containing 2 or more batteries connected to allow multiple voltage outputs. Each output being protected by an automatically resettable circuit to limit maximum current under all possible external connections and sound an alarm or produce a visual indication or both if any output current is exceeded.

Esd protection device

The present invention is provided with a si substrate, an esd protection circuit formed in the si substrate, pads formed on the surface of the si substrate and electrically connected to first and second input/output terminals of the esd protection circuit, a rewiring layer formed on the surface of the si substrate for electrically connecting the pads and metal plated films, and an insulating resin film formed on the rear surface of the si substrate. Thus, provided is an esd protection device which can suppress the influence of external noise, etc..

Overvoltage protection circuit, control method therefor and battery pack

The overvoltage protection circuit according to an embodiment of the present invention includes: a voltage measurement unit for measuring the voltage of a battery; a power control unit that supplies power if the battery voltage value measured in the voltage measurement unit is equal to or greater than a first predetermined voltage value; and a cut-off circuit unit that receives power supplied from the power control unit and cuts off the charge of the battery if the voltage value of the battery is equal to or greater than a second predetermined voltage value that is higher than the first voltage value.. .

Fluorescent lamp replacement led protection

A fluorescent lamp replacement may include one or more led drivers and lamps in various embodiments, as well as a shock hazard/pin safety circuit. The present invention provides a fluorescent lamp replacement that, for example, powers an led and/or oled and/or qd lamp from a fluorescent fixture, including operating 5 and being powered by electronic ballasts.
Innosys, Inc.

Communication device, communication method, and communication system

A communication device includes a communication circuit configured to transmit, when detecting an interruption of communication performed via a first communication interface, information indicating the interruption of the communication, via a second communication interface; and a protection circuit configured to supply power to the communication circuit, when an interruption of power to be supplied to the communication circuit is detected, wherein, when the interruption of the power is detected, the communication circuit transmits information indicating the interruption of the power via the second communication interface, by using the power supplied from the protection circuit, and when the interruption of the power and the interruption of the communication are both detected, the communication circuit transmits the information indicating the interruption of the power, of the information indicating the interruption of the communication and the information indicating the interruption of the power, via the second communication interface.. .
Fujitsu Limited

Integrated lighting system

An integrated lighting system to efficiently manage battery life with indoor and outdoor modes by charging a battery during the day, turning on lights at peak night hours, and protecting the battery from overvoltage/leakage. The system comprises circuitry operable to connect to the battery and the led light sources, the circuitry comprising a solar cell, a timer circuit, and a protection circuit.
Exhart Environmental Systems, Inc.

Integrated circuit electrostatic discharge protection

Integrated circuits with electrostatic discharge (esd) protection and methods of providing esd protection in an integrated circuit are provided. An esd protection circuit the esd protection circuit may incorporate a transistor, such as a mosfet, and a voltage limiter coupled to a gate of the transistor.
Globalfoundries Singapore Pte. Ltd.

Over-voltage protection circuit and electronic device

An over-voltage protection circuit for executing an over-voltage protection for a led module of an electronic device. The over-voltage protection circuit includes a control unit and an over-voltage detection module, a trigger module and an adjustment module.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Surge voltage protection circuit for direct line operated induction heaters and operation

An apparatus and method for greatly increasing power line surge/transient resistance of power semiconductors in inductive heating equipment, in which a sample of the instantaneous line voltage or its rectified equivalent is applied to a comparator input terminal, and a reference voltage corresponding to a predetermined surge shutdown voltage is applied to an opposite comparator input, such that comparator output changes state in response to the predetermined surge shutdown voltage, and is functionally connected to gate drive circuitry to disable gate drive circuitry for the duration of the surge/transient.. .

Method, apparatus, and system for metal-oxide-semiconductor field-effect transistor (mosfet) with electrostatic discharge (esd) protection

Methods, apparatus, and systems relating to a mosfet with esd resistance, specifically, to a semiconductor device comprising a field-effect transistor (fet) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (esd) protection circuit; a source terminal disposed above and in electrical contact with the at least one source esd protection circuit, wherein the source terminal extends in the first direction; at least one drain esd protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain esd protection circuit, wherein the drain terminal extends in the first direction.. .
Globalfoundries Inc.

Display device and electronic apparatus

A liquid crystal display device includes a pixel substrate, a counter substrate, and a liquid crystal layer. The pixel substrate includes a pixel electrode and a common electrode.
Japan Display Inc.

Motorized system with position calibration, circuit protection and detection of motor stoppage

A motorized system that allows for calibration by a user, and that features circuit protection and detection of motor stoppage. A motorized window-blind system is an example of such a system and is disclosed herein.
Silvair Sp. Z O.o.

Protection circuit assembly and method

Single channel digital addressable lighting interface (dali) systems can include a dedicated external power supply that operates in a constant voltage/constant current mode to meet requirements of the dali bus. A lighting controller is powered from the dali bus.

Protection circuit

A protection circuit includes a periodicity determination device, an off circuit and a control device. The periodicity determination device directly or indirectly detects a noise superimposed on a first transistor including a control terminal and determines periodicity of the noise.

Protection circuit and switching power supply

A protection circuit 6 includes a bipolar transistor q1 that becomes on state and sets current that flows to a photo coupler 62 larger in case that a temperature detection element 63 supplies a detection signal, a control ic 4 that controls a switching element 3, and a protection power supply circuit 66 that includes a condenser c3 that is charged by output voltage from the switching power supply 1. Power supply voltage form the protection power supply circuit 66 is supplied to the temperature detection circuit 63 and the photo coupler 62.

Enhanced parallel protection circuit

An enhanced parallel protection circuit is provided. A system using separate battery packs in a parallel configuration is arranged with multiple protection circuit modules (pcms).

Semiconductor device and design same

A semiconductor device includes a semiconductor substrate having a predetermined region in which a standard cell is disposed, and also includes: a first circuit connected to a first ground power line; a second circuit that is connected to a second ground power line and formed from the standard cells; and a protection circuit interposed and connected between the first circuit and the second circuit. The protection circuit includes: a resistor connected in series between the first circuit and the second circuit; and a protector that is interposed and connected between a node of the resistor on the second circuit side and the second ground power line and clamps a potential difference between the node and the second ground power line to a predetermined voltage or lower.

Electronic switching and protection circuit with a logarithmic adc

An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes a logarithmic analog-to-digital converter (adc) configured to receive an adc input signal representing the load current and to output an adc output signal that includes a sequence of values such that each of the values represents a respective sample of the adc input signal, a filter configured to filter the adc output signal and output a filter output signal, and a comparator circuit configured to generate the first protection signal based on comparing the filter output signal with a predefined threshold..
Infineon Technologies Ag

Electronic switching and protection circuit

An embodiment electronic circuit includes an electronic switch comprising a load path, a first protection circuit configured to generate a first protection signal based on a current-time-characteristic of a load current through the load path of the electronic switch, and a drive circuit configured to drive the electronic switch based on the first protection signal. The first protection circuit includes an analog-to-digital converter (adc) configured to receive an adc input signal representing the load current, to sample the adc input signal once in each of a plurality of successive sampling periods, and to output an adc output signal that includes a sequence of values such that each of the values represents a respective sample of the adc input signal.
Infineon Technologies Ag

Smart senses for direct charging

In an embodiment, a device is discussed, the device comprising: a battery, a battery charging circuit configured to allow direct charging of the battery by an external charger, a battery protection circuit configured to protect the battery from damage, coupled to the battery charging circuit; and a connector comprising: at least one sense wire coupled to the battery to sense battery voltage, and at least one wire coupled to the battery via the battery charging circuit and the battery protection circuit, configured to charge the battery.. .
Microsoft Technology Licensing, Llc

Electronic switching and protection circuit with wakeup function

An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch. The control circuit is configured to operate in one of a first operation mode and a second operation mode based at least on a level of a load current of the electronic switch.
Infineon Technologies Ag

Electronic switching and protection circuit with test mode function

An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch and configured to operate in one of a first operation mode and a test mode. The control circuit comprises a test mode input and is configured to operate in the test mode based on a test signal received at the test mode input.
Infineon Technologies Ag

Electronic switching and protection circuit with several operation modes

An embodiment electronic circuit includes an electronic switch comprising a load path, and a control circuit configured to drive the electronic switch. The control circuit is configured to operate in one of at least two operation modes.
Infineon Technologies Ag

Temperature detection device

A protection circuit includes a first sensor connecting path having a first overcurrent protection element and connecting one of terminals of a first temperature sensor to a sensor input circuit; a second sensor connecting path having a second overcurrent protection element and connecting one of terminals of a second temperature sensor to the sensor input circuit; a rectifying element connecting the first sensor connecting path, whose normal voltage is higher than a reference voltage line, to the reference voltage line in a section between the first overcurrent protection element and the sensor input circuit; and an overvoltage protection element connecting the second sensor connecting path, whose normal voltage is higher than the reference voltage line, to the reference voltage line in a section between the second overcurrent protection element and the sensor input circuit.. .
Toyota Jidosha Kabushiki Kaisha

Semiconductor device in a level shifter with electrostatic discharge (esd) protection circuit and semiconductor chip

The present disclosure relates to a semiconductor chip having a level shifter with electro-static discharge (esd) protection circuit and device applied to multiple power supply lines with high and low power input to protect the level shifter from the static esd stress. More particularly, the present disclosure relates to a feature to protect a semiconductor device in a level shifter from the esd stress by using esd stress blocking region adjacent to a gate electrode of the semiconductor device.
Magnachip Semiconductor, Ltd.

Ultrasound catheter for imaging and blood flow measurement

Rotational intravascular ultrasound (ivus) imaging devices, systems, and methods are provided. Some embodiments are directed to transducer mounting configurations that enable polymer piezoelectric micro-machined ultrasonic transducers (pmuts) to be used with a doppler color flow rotational ivus imaging system.
Volcano Corporation

Input overvoltage protection circuit

An input overvoltage protection circuit is equipped with a first wiring and a second wiring which are connected to a protected circuit in order to supply a voltage thereto, a fuse inserted in series in the first wiring and which interrupts a current flowing through the first wiring when a current greater than or equal to a predetermined value flows therethrough, a silicon surge absorber, one end of which is connected between the protected circuit and the fuse in the first wiring, and the other end of which is connected to the second wiring, and a bidirectional two-terminal thyristor connected to the first wiring and to the second wiring at a location between the silicon surge absorber and the protected circuit.. .
Fanuc Corporation

Electronic device with reverse voltage protection circuitry for multiple control lines

A host electronic device may be coupled to an accessory electronic device. The host device and the accessory device may be connected via power supply lines and user data lines.
Apple Inc.

Short-circuit protection circuit for self-arc-extinguishing type semiconductor element

A short-circuit protection circuit for a self-arc-extinguishing type semiconductor element includes a first protection circuit and a second protection circuit. The first protection circuit is configured to reduce a voltage between a control electrode and a first main electrode of the self-arc-extinguishing type semiconductor element when detecting overcurrent flowing between the first main electrode and a second main electrode.
Mitsubishi Electric Corporation

Fingerprint sensor having electrostatic discharge protection

A fingerprint sensor having electrostatic discharge (esd) protection includes a first esd protection electrode and a second esd protection electrode. The first esd protection electrode is connected to an esd protection circuit for providing an esd path, where the first esd protection electrode and a fingerprint sensor electrode array are formed in a same layer of the fingerprint sensor.
Elan Microelectronics Corporation

Apparatus and methods for overload protection of low noise amplifiers

Apparatus and methods for overload protection of low noise amplifiers (lnas) are provided herein. In certain configurations, an lna system includes an input switch having an analog control input that controls an impedance of the input switch, an lna that amplifies a radio frequency (rf) input signal received from the input switch, and an overload protection circuit that provides feedback to the input switch's analog control input based on detecting a signal level of the lna.
Skyworks Solutions, Inc.

Insulated synchronous rectification dc/dc converter

An insulated synchronous rectification dc/dc converter is provided. A feedback circuit drives a light-emitting element of a first photocoupler such that the output voltage vout of the dc/dc converter approaches a target voltage.
Rohm Co., Ltd.

Battery module

A battery module includes a plurality of battery cells arranged in one direction, each of the battery cells including electrode portions, a connection tab connecting adjacent battery cells of the plurality of battery cells, and a protection circuit module having one side end portion connected to the connection tab. The connection tab includes a body portion that contacts the electrode portions of the adjacent battery cells and an extension portion extending from the body portion, the extension portion being connected to the protection circuit module.
Samsung Sdi Co., Ltd.

Semiconductor device including electrostatic protection circuit

A semiconductor device includes: a first power source (ps1) pad supplied with a ps1 voltage; a ps1 line connected to the ps1 pad; a first ground line (g1); an output circuit operated using the ps1 voltage; a second power source (ps2) pad supplied with a ps2 voltage; a ps2 line connected to the ps2 pad; a second ground line (g2); a signal line connected to an output end of the output circuit; an input circuit connected to the signal line at an input end receiving a signal from the output end and operated using the ps2 voltage; a main protection circuit unit providing discharge routes between the ps1 pad and g1, g1 and g2, and g2 and the ps2 pad; and a sub protection circuit unit. The output circuit includes: a circuit element arranged between the ps1 line and the signal line and able to function as a resistive element..
Renesas Electronics Corporation

Display device and electronic device having the same

A display device includes a display panel including data lines, scan lines, and pixels, a scan driver configured to provide a scan signal to the pixels through the scan lines, a data driver configured to provide data signal to the pixels through the data lines, a voltage generator configured to provide an on-bias voltage to the pixels through the data lines, a timing controller configured to generate a first control signal that controls the data driver and a second control signal that controls the voltage generator, and a protection circuit configured to generate a first protection signal and a second protection signal and prevent an overlapping output of the data signal and the on-bias voltage based on the first control signal and the second control signal.. .
Samsung Display Co., Ltd.

Low side output driver reverse current protection circuit

Disclosed examples include integrated circuits, output driver circuits and protection circuits to protect an output transistor connected between a driver output node and a first intermediate node, including a resistor connected between the output node and a gate terminal of the output transistor, a diode connected between a second intermediate node and the output transistor gate terminal, and a switching device to electrically couple the second intermediate node with a reference node to turn on the output transistor to allow a second transistor to control a voltage of the output node when a control signal is in a first state, and to disconnect the second intermediate node from the reference node to prevent current flow through the resistor to control a gate voltage of the output transistor when the control signal is in a different second state.. .
Texas Instruments Incorporated

Power amplifier with input power protection circuits

An rf power amplifier circuit and input power limiter circuits are disclosed. A power detector generates a voltage output proportional to a power level of an input signal.

Overvoltage and overcurrent protection circuit and mobile terminal

The present disclosure provides an overvoltage and overcurrent protection circuit and a mobile terminal. The overvoltage and overcurrent protection circuit comprises a primary protection circuit and a secondary protection circuit.
Guang Dong Oppo Mobile Telecommunications Corp., Ltd.

Switching regulator

To provide a switching regulator equipped with an overheat protection circuit small in current consumption. A switching regulator of the present invention is configured to intermittently operate an overheat protection circuit only for a prescribed period based on a signal turning on a switching element, which is outputted from an output control circuit..
Sii Semiconductor Corporation

Route protection circuit and liquid crystal display

The circuit of the present invention comprises a detection module and a feedback module, wherein an output end of a power supply management module is coupled to one end of a voltage level shift module, and the other end of the voltage level shift module is coupled to a first end of the detection module, and a second end of the detection module is coupled to a woa route module or a goa route module, and a third end of the detection is coupled to one end of the feedback module, and the other end of the feedback module is coupled to an enable end of the power supply management module, and the detection module detects whether the woa route module or the goa route module is short, and feeds back a short signal; the feedback module receives the short signal, and sends a disable signal to the enable end.. .
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Regulator

A regulator includes a driving circuit, an amplifying circuit and an overvoltage protection circuit. The driving circuit is configured to receive an input voltage and provide an output voltage through an output terminal.
Realtek Semiconductor Corporation

Retrofit light emitting diode tube

Light sources for replacing fluorescent lamps comprise light circuits with light emitting diodes, first and second terminals located at first and second ends of the light sources for exchanging first signals with high-frequency ballasts, and converter circuits for converting the first signals into second signals for feeding the light circuits. The converter circuits comprise reactive circuits for matching the light circuits and the high-frequency ballasts and provide safety to persons when installing the light sources.
Philips Lighting Holding B.v.

Bi-directional snapback esd protection circuit

An esd protection circuit having a discharging transistor and a body snatching circuit. The discharging transistor is electrically coupled between a first node and a second node.
Monolithic Power Systems, Inc.

Explosion protection circuit with impedance matching

An apparatus for monitoring at least one physical or chemical process variable, comprising at least one sensor unit and an electronics unit for signal registration, evaluation and/or feeding, wherein the sensor unit is operated with alternating electrical current and/or communication between the electronics unit and the sensor unit occurs with alternating electrical current and/or alternating voltage. An explosion protection circuit with intrinsic safety, which includes a safety barrier, which has at least one unit for electrical current- and/or voltage limiting, is provided within the explosion protection circuit a unit for impedance matching, which unit for impedance matching includes at least one transformer..
Endress + Hauser Flowtec Ag

Overvoltage protection circuit and overvoltage protection control method

There is provided an overvoltage protection circuit including: a comparator configured to compare a dc voltage supplied to a first load by a power generator with a first value set based on an upper limit of an operating voltage of the first load; a storage element configured to be charged with a portion of a current generated by the power generator; and a switch configured to change a flow of the current so that: when the dc voltage is higher than the first value, the portion of the current is supplied to the storage element and a second load coupled to the storage element in parallel, and when the dc voltage is less than or equal to the first value, the storage element supplies the second load with power.. .
Fujitsu Limited

Esd protection circuit and method with high immunity to hot plug insertion and other transient events

Disclosed examples include an esd protection circuit to protect an ic pad with high immunity against hot-plug surges, switching noise or other transient voltage conditions on the protected pad. The esd protection circuit includes a clamp transistor and a trigger circuit responsive to rises in the protected pad voltage at or above a first slew rate to turn on the clamp transistor, as well as a second circuit coupled between the control terminal of the clamp transistor and a voltage supply node.
Texas Instruments Incorporated

Electrical energy storage device and electricity conducting mechanism thereof

An electrical energy storage device includes a casing, an input terminal set, an output terminal set, a protection circuit board, and an electricity conducting mechanism. At least one electrical energy storage unit is disposed inside the casing.
Yaray International Corporation

Apparatus and methods for actively-controlled transient overstress protection with false condition shutdown

Apparatus and methods for transient overstress protection with false condition shutdown are provided herein. In certain configurations, a high-voltage tolerant actively-controlled protection circuit includes a transient overstress detection circuit, a clamp circuit electrically connected between a first node and a second node, a bias circuit that biases the clamp circuit, and a false condition shutdown circuit.
Analog Devices, Inc.

Liquid crystal display

An lcd includes a substrate, gate on array (goa) units connected in series, a controller, a level shifter, and an over-current protection circuit. The substrate includes a pixel array section and a circuit arrangement section.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Fingerprint sensor, electronic device having the same, and operating the fingerprint sensor

A fingerprint sensor includes a pixel array and a controller. The pixel array includes a plurality of unit pixels arranged in rows and columns, each of the plurality of unit pixels including, a sensing electrode configured to form a detection capacitance with a finger, a signal generation circuit configured to output an analog signal through a column line based on the detection capacitance, and a protection circuit configured to control a voltage transfer between the sensing electrode and a common line.
Samsung Electronics Co., Ltd.

Skeleton i/o generation for early esd analysis

A design flow of an integrated circuit may include a skeleton input/output (i/o) generation stage during which information about esd protection circuitry and rails but not functional circuitry of the i/o cells of the integrated circuit is generated. The information may be used in an esd analysis stage to generate performance characteristics of the esd protection circuitry.
Sandisk Technologies Llc

Battery protection circuit and battery pack including same

A battery protection circuit includes a charging switch, a resistor, a charging controller, a switching circuit, a fuse circuit, and a fuse driving circuit. The charging switch is connected to a first electrode of a battery cell.
Samsung Sdi Co., Ltd.

Battery pack

A battery pack includes a protection circuit module for a plurality of battery cells arranged in parallel in a case. The protection circuit module includes a temperature sensor.
Samsung Sdi Co., Ltd.

Semiconductor device and stacking semiconductor die for system-level esd protection

A semiconductor device has a first semiconductor die including a first protection circuit. A second semiconductor die including a second protection circuit is disposed over the first semiconductor die.
Semtech Corporation

Semiconductor package having multi-phase power inverter with internal temperature sensor

According to an exemplary implementation, a semiconductor package includes a multi-phase power inverter having power switches and situated on a leadframe of the semiconductor package. The semiconductor package further includes a temperature sensor situated on the leadframe, where the temperature sensor is configured to generate a sensed temperature of the power switches.
Infineon Technologies Americas Corp.

Electrostatic protection circuit, semiconductor integrated circuit device, and electronic device

This electrostatic protection circuit enables a high hold voltage to be set, and acts to accurately prevent breakdown of a protected circuit immediately after power on, and to prevent breakdown or deterioration of a protection device during prolonged normal operation, without connecting a resistance element in parallel to a plurality of circuit blocks connected in series. This electrostatic protection circuit is provided with a plurality of circuit blocks connected in series between a first node and a second node, at least one circuit block out of the plurality of circuit blocks including a thyristor having an anode connected to one end of the at least one circuit block and a cathode connected to the other end of the at least one circuit block.
Seiko Epson Corporation

Electrostatic protection circuit, semiconductor integrated circuit device, and electronic device

This electrostatic protection circuit enables a trigger voltage to be set arbitrarily and enables a high hold voltage to be set, without providing an rc timer having a large circuit area. This electrostatic protection circuit is connected to a first terminal via a first node and is connected to a second terminal via a second node.
Seiko Epson Corporation

Overheat protection unit

When a temperature is less than a first threshold, a protection circuit unit executes a normal operation by a pulse width modulation. When the temperature is greater than or equal to the first threshold and is less than a second threshold, the protection circuit unit executes a first heat dissipation suppressing operation that suppresses a self-heating of a switching element.
Denso Corporation

Battery protective circuit

A battery protective circuit includes a battery controller, a charging control transistor, and a protection circuit. The battery controller controls charging of a battery according to a charging control voltage output through a charging control terminal.
Samsung Sdi Co., Ltd.

Semiconductor device

To provide a technique capable of reducing the chip size of a semiconductor chip and particularly, a technique capable of reducing the chip size of a semiconductor chip in the form of a rectangle that constitutes an lcd driver by devising a layout arrangement in a short-side direction. In a semiconductor chip that constitutes an lcd driver, input protection circuits are arranged in a lower layer of part of a plurality of input bump electrodes and on the other hand, in a lower layer of the other part of the input bump electrodes, the input protection circuits are not arranged but srams (internal circuits) are arranged..
Renesas Electronics Corporation

Dc-dc converter

To provide a synchronous rectification type dc-dc converter equipped with a protection circuit operated stably. There is provided a dc-dc converter equipped with a detection circuit which detects that electrical energy accumulated in an inductor is lost, or a timer circuit which counts a prescribed time after the protection circuit detects an abnormality.
Sii Semiconductor Corporation

Data interface with overvoltage protection for two-way digital control bus system

A data interface with overvoltage protection circuitry includes a bus interface and power rectification stage configured to provide supply and return voltages for the data interface and overvoltage protection circuitry, a first power level overvoltage protection circuit, a second power level overvoltage protection circuit, a dali endpoint power output port, a power supply for a dali endpoint device drawing current from the power output port, a receiver configured to receive signals on the dali bus, and, a transmitter configured to send signals on the dali bus.. .
General Electric Company

Solar photovoltaic output optimizer circuit

A solar photovoltaic output optimizer circuit includes a pv input device for receiving output of a solar photovoltaic panel; a switching device for converting a dc voltage input through the pv input device into a predetermined pulse voltage or ac voltage; and a voltage doubler rectification device for stepping up power output of the switching device to a predetermined voltage. The pv input device includes: an inductance l1 connected in series to “+” output of the pv panel; and a surge protection circuit that is connected in parallel to the inductance l1, operates so as to absorb surge voltage to occur in output of the inductance l1 only when output of the pv panel is small and normal control cannot be performed, and is automatically separated from the inductance l1 when the output of the pv panel is large..
Clean Energy Factory Co., Ltd.

Protection element, protection circuit, and semiconductor integrated circuit

Provided is the protection element including: a clamp mos transistor that has a drain coupled to a power supply line and a source coupled to a ground line; and a potential increasing circuit that increases a potential of a diffusion layer at the ground line side of the clamp mos transistor, more than a potential of the ground line. In this protection element, the potential of the diffusion layer coupled to the ground line of the clamp mos transistor is increased from the potential of the ground line, whereby an increase in current due to off-state leakage can be reduced while a sufficient drive current is ensured during an esd operation..

Field-effect transistor with protection diodes

A field-effect transistor with protection diodes includes: a field-effect transistor; and a two-terminal electrostatic protection circuit connected between a gate and a source of the field-effect transistor, wherein the two-terminal electrostatic protection circuit comprises: a first diode that is positioned on a reverse-biased side when a voltage lower than a potential of the source is applied to the gate and has a reverse withstand voltage lower than a reverse withstand voltage between the gate and the source of the field-effect transistor; a second diode that is positioned on a forward-biased side when a voltage lower than a potential of the source is applied to the gate and is connected in anti-series to the first diode; and a resistor that is connected in series to a diode pair comprising the first diode and the second diode and formed using a same channel layer as that of the field-effect transistor.. .
Mitsubishi Electric Corporation

Esd protection circuit

Electrostatic discharge (esd) protection circuitry in an integrated circuit is provided. The protection circuitry includes a trigger circuit coupled between a first power supply bus and a second power supply bus.
Freescale Semiconductor, Inc.

Protection circuit and switching power supply

A protection circuit 5 includes a comparator 52 that supplies detection current i1 based on voltage vsens that a temperature sensor 51 outputs in case that voltage vsens that the temperature sensor 51 outputs exceeds voltage vref of predetermined potential, a control circuit 53 that supplies control current i2 that the control circuit 53 increases detection current i1 that the comparator 52 supplies exponentially, and a constant voltage circuit 54 reduces output voltage vout that is output from a switching power supply 1 based on control current i2 that the control circuit 53 supplies.. .

Power supply protection circuit and method

A power supply protection circuit and a method is described herein. The power supply protection circuit comprises a current control unit, a voltage feedback unit, and a current pull-up unit.
Joulwatt Technology (hangzhou) Co., Ltd.

Electronic control device

The purpose of the present invention is to provide an electronic control device including an integratable protection circuit that is capable of protecting an internal circuit, a sensor, etc., against both of surge voltage application and battery connection abnormality. The electronic control device includes an input terminal connectable to an external sensor and switch, and a power supply wiring and a gnd wiring that are utilized to supply power to the internal circuit, wherein protection elements each including a pn junction are connected between the input terminal and the power supply wiring or the gnd wiring, and protection resistor are further connected in series between the protection elements and the power supply wiring or the gnd wiring..
Hitachi Automotive Systems, Ltd.

Logging esd events

An electrostatic discharge (esd) logging system includes esd detection circuitry having at least one input electrically connected coupled to a node of an esd protection circuit. The esd detection circuitry provides a detector signal in response to detecting an esd event at the node of the esd protection circuit.
Texas Instruments Incorporated

Electrostatic discharge protection circuit with leakage current reduction and associated electrostatic discharge protection method

An electrostatic discharge (esd) protection circuit has an esd detection circuit, an esd clamp circuit, and a leakage current reduction circuit. The esd detection circuit generates an esd trigger signal when an esd event is detected in a normal mode.
Mediatek Inc.

Protection circuit for gate driver on array unit, and array substrate

A protection circuit for a gate driver on array (goa) unit, which relates to esd or eos protection for the gate goa unit. The protection circuit includes: a first voltage gating module configured to output, when a gate line signal output end should output a valid driving voltage of a gate driving signal, an output voltage of an output end of a first voltage source; and a first protection module, an input end of which is connected to an output end of the first voltage gating module, and an output end of which is connected to a gate line; wherein in the case where the output voltage of the first voltage source and a current output voltage of the gate line signal output end satisfies a first predetermined condition, the first protection module outputs the output voltage of the output end of the first voltage source as an adjusted gate driving signal..
Boe Technology Group Co., Ltd.

Drive circuit for semiconductor switching element

A drive circuit for a semiconductor switching element includes an overcurrent protection circuit, a short-circuit protection circuit, and a determination time changing circuit. The overcurrent protection circuit judges that a principal current become an overcurrent when a sense voltage proportional to magnitude of the principal current excesses over a first threshold value, and then reduces the principal current.
Calsonic Kansei Corporation

Enhanced parallel protection circuit

An enhanced parallel protection circuit is provided. A system using separate battery packs in a parallel configuration is arranged with multiple protection circuit modules (pcms).

Overcurrent protection assemblies for appliances

An overcurrent protection assembly for an appliance includes a cabinet configured to house the appliance, the cabinet including a body and a door, the door movable between an open position and a closed position. The overcurrent protection assembly further includes an overcurrent protection circuit, the overcurrent protection circuit including a switch and a current limiter.
General Electric Company

Semiconductor integrated circuit device

Diffusion regions having the same conductivity type are arranged on a side of a second wiring and a side of a third wiring, respectively under a first wiring connected to a signal terminal. Diffusion regions are separated in a whole part or one part of a range in a y direction.
Socionext Inc.

Electrostatic discharge protection circuit

The present invention provides an esd protection circuit electrically connected between a high voltage power line and a low voltage power line, and the esd protection circuit includes a bipolar junction transistor (bjt) and a trigger source. A collector of the bjt is electrically connected to the high voltage power line, and an emitter and a base of the bjt are electrically connected to the low voltage power line.
United Microelectronics Corp.

Fishing reel

A fishing reel configured to forwardly release a fishing line includes a reel unit, a spool rotatably supported by the reel unit, an electric power generator that generates an electric power upon a rotation of the spool, an electric component including a controller, an overvoltage protection circuit, and a bypass circuit. The controller operates using the electric power generated by the electric power generator.
Shimano Inc.

Power-up sequence protection circuit for avoiding unexpected power-up voltage

A power-up sequence protection circuit includes a first transistor, a second transistor, a third transistor, and a fourth transistor. First terminals of the first transistor, the second transistor, and the fourth transistor are coupled for receiving a program voltage.
Ememory Technology Inc.

E-cigarette and re-charging pack

A pack for containing and recharging an e-cigarette includes: a re-chargeable pack battery; a first connector which is electrically connectable to an external power source; a first recharging mechanism for re-charging the pack battery using the external power source when the first connector is electrically connected to the external power source; a second connector which is electrically connectable to an e-cigarette contained within the pack; and a second recharging mechanism for re-charging the e-cigarette when the e-cigarette is electrically connected to the second connector. The first recharging mechanism includes a first protection circuit module and the second re-charging mechanism includes a second protection circuit module, wherein the protection modules protect the pack and e-cigarette against excessive voltage or current during re-charging..
Nicoventures Holdings Limited

Voltage regulator

A safe and low-cost voltage regulator is provided through simplification of a circuit configuration of a protection circuit. The voltage regulator has a configuration in which current output of the protection circuit, which serves as a signal indicating that the protection circuit has started to operate, is input to a control circuit configured to improve responsiveness of the voltage regulator..
Sii Semiconductor Corporation

Battery protection circuit

A battery protection circuit includes a voltage source, a first resistor, a charging controller, a charging transistor, a second resistor, and a current voltage converter. The first resistor includes a first terminal connected to the voltage source.
Samsung Sdi Co., Ltd.

Over-current protection circuit and voltage regulators

A voltage regulator includes a control circuit, a switch circuit, a first over-current protection circuit, and a second over-current protection circuit. The control circuit generates a pulse-width modulation (pwm) signal having a duty cycle proportional to an output voltage of the voltage regulator.
Semiconductor Components Industries, Llc

Cable and power supply device

A cable includes: a cable part that includes a power supply line forming a power line; a connector that is provided on at least one of one end and another end of the cable part; and a circuit board that has a protection circuit including a temperature detection element and a switch that accepts a detection result of the temperature detection element to perform an operation of switchably conducting and interrupting the power line.. .
Sony Corporation

Semiconductor device

A semiconductor device includes a substrate, a power device, a protection circuit, a dielectric layer, a drain pad, a source pad, and a gate pad. The power device and the protection circuit are disposed on the substrate.
Delta Electronics, Inc.

Apparatus and methods for electrical overstress protection

Apparatus and methods for electrical overstress (eos) protection circuits are provided herein. In certain configurations, an eos protection circuit includes an overstress sensing circuit electrically connected between a pad and a first supply node, an impedance element electrically connected between the pad and a signal node, a controllable clamp electrically connected between the signal node and the first supply node and selectively activatable by the overstress sensing circuit, and an overshoot limiting circuit electrically connected between the signal node and a second supply node.
Skyworks Solutions, Inc.

Electrostatic discharge protection circuit, esd protection semiconductor device, and layout structure of esd protection semiconductor device

An esd protection semiconductor device includes a substrate, a buried layer buried in the substrate, a first well formed in the substrate, a first doped region formed in the first well, a second doped region formed in the first well and adjacent to the first doped region, a second well formed in the first well, and a third doped region formed in the second well. The buried layer, the first well, the first doped region, and the third doped region include a first conductivity type while the second doped region and the second well include a second conductivity type complementary to the first conductivity type.
United Microelectronics Corp.

Overcurrent protection circuit

An overcurrent protection circuit includes a load drive portion that drives a load based on a power supply voltage; a wire that connects the load and the load drive portion; a current detection portion that detects a load current showing a value of a current flowing through the load; a voltage detection portion; and a controller that controls the load drive portion to control a drive of the load, the controller determining an addition-and-subtraction value, controlling the load drive portion to cut off the load current, and stopping driving the load to protect a protection target from an overcurrent. The controller subtracts the integration value based on an elapsed time after cutoff of the load current.
Toyota Jidosha Kabushiki Kaisha

Switching power supply device

A switching power supply device includes: a switching output circuit configured to generate an output voltage from an input voltage; an oscillation circuit configured to generate a clock signal; a control circuit configured to control driving of the switching output circuit in synchronization with the clock signal; a pulse-by-pulse type overcurrent protection circuit configured to detect an overcurrent flowing through the switching output circuit to generate an overcurrent protection signal for forcibly stopping a switching operation of the switching output circuit; and a pulse skip circuit configured to perform a pulse skip operation of the clock signal in response to the overcurrent protection signal.. .
Rohm Co., Ltd.

Chip and electronic device

The present invention provides a chip and an electronic device. The chip comprises at least one pin, and the chip comprises at least one esd (electrostatic discharge) protection circuit inside, and the esd protection circuit is employed to reduce or eliminate a damage of electrostatic to other elements or circuit inside the chip, and the esd protection circuit is located corresponding to a pin, and the esd protection circuit is electrically coupled to the pin.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Battery pack

A battery pack includes: a plurality of battery cells arranged in parallel with each other, each of the battery cells comprising an electrode terminal at opposite ends thereof; a holder case configured to accommodate the battery cells; a protection circuit module mounted at an external side of the holder case and comprising a cell voltage measuring terminal facing the holder case; and a connection tab comprising a body part electrically connected to the electrode terminals of a group of the battery cells and an extended part extended from the body part to contact and be electrically connected with the cell voltage measuring terminal of the protection circuit module due to tension in the extended part.. .
Samsung Sdi Co., Ltd.

High voltage resistant transmitting circuit for devices communicating on dali bus

An apparatus includes a transmitting circuit and a power supply connected to a digital lighting interface bus, and a protection circuit configured to provide a first signal operable to disconnect the power supply and a second signal operable to disable the transmitting circuit when a voltage on the digital lighting interface bus exceeds a predetermined threshold. A method includes sensing a voltage on a digital lighting interface bus, and upon detecting that the voltage exceeds a predetermined threshold, providing a first signal operable to disconnect a power supply connected to the digital lighting interface bus and providing a second signal operable to disable a transmitting circuit supply connected to the digital lighting interface bus..
General Electric Company

Protection circuits for tunable resistor at continuous-time adc input

Continuous-time analog-to-digital converters (adcs) such as continuous-time delta-sigma adcs and continuous-time pipeline adcs, has input resistor structure at the input. The input resistor structure is typically tunable, and the tunability is usually provided by metal-oxide semiconductor field effect transistor (mosfet) switches.
Analog Devices Global

Current sensing in a power supply

During operation, a protection circuit receives an input voltage representative of current delivered by a power supply phase to a load. In one configuration, the input voltage is received as the voltage across respective drain-source nodes of a synchronous switch (low side switch) disposed in a power supply.
Infineon Technologies Americas Corp.

Power supply apparatus and providing power to an electronic device to prevent overcurrent discharge

For preventing overcurrent discharge, a protection method, a power supply apparatus, and an electronic device are disclosed. The power supply apparatus may include a power supply module and a protection circuit coupled to the power supply module and an electrical terminal.
Lenovo (beijing) Limited

High-voltage intelligent switch alternating current capacitor

Disclosed is a high-voltage ac capacitor for reactive power compensation of 10 kv-35 kv power grid, and in particular to a high-voltage ac capacitor with a high-voltage switching switch provided therein, as well as a structure for prolonging the service life of a thin film metalized high-voltage capacitor and a control method for prolonging the service life of the thin film metalized high-voltage capacitor. The ac capacitor is formed by multiple intelligent switch capacitor units connected in series, and each capacitor unit is formed by a switch contact (k11-kn1) and a capacitor (c1-cn) connected in series.
Gyrk International Technology Co., Ltd.

Esd protection circuit with false triggering prevention

An esd protection circuit used to protect a protected circuit coupled between a first node and a second node against an esd event. The esd protection circuit has a discharging circuit and a control circuit.
Monolithic Power Systems, Inc.

High-efficiency low-cost solar panel with protection circuitry

One embodiment of the invention can provide a solar panel. The solar panel can include a plurality of strings of photovoltaic strips sandwiched between a front cover and a back cover.
Solarcity Corporation

Electrostatic protection circuit, semiconductor integrated circuit device, and electronic device

Provided is an electrostatic protection circuit that has little leakage current under normal operation and allows a trigger voltage to be set comparatively freely, without requiring a special process step. This electrostatic protection circuit is provided with a series circuit including a transistor, a predetermined number of diodes and an impedance element that are connected in series between the first node and the second node, and a discharge circuit configured to send current from the first node to the second node following an increase in a potential difference that occurs between both ends of the impedance element, when the first node reaches a higher potential than the second node and current flows through the series circuit.
Seiko Epson Corporation

Explosion-proof circuit, charging circuit and charging/discharging protection circuit of battery

An explosion-proof circuit, a charging circuit and a charging/discharging protection circuit of a battery are disclosed. In the explosion-proof circuit and charging circuit of the battery, when a load is short-circuited, the voltage at the output end of a power electronic switch (q1) is close to the voltage of the negative electrode of the battery, and the voltage of the battery is divided by a control resistor (r9) and a feedback resistor (r15), so that a feedback control switch (q3) is switched on, thus enabling the power electronic switch (q1) to be in a cut-off state; the load current is cut off to protect the power electronic switch (q1) from damage; and meanwhile, the electric quantity of the battery is released in a relatively small safe current by a current limiting resistor (r7), the control resistor (r9) and the feedback resistor (r15), thereby avoiding the problem that the battery generates secondary hazards due to the fact that the electric quantity of the battery is stored in the battery and cannot be released.
Beijing Tocel Electronics Co., Ltd (cn)

Protection circuit assembly and high voltage systems

A circuit assembly and method use a breakover device that changes states in response to a change in electric energy in a helper circuit that supplies current from a power source to a powered system. The helper circuit includes an inductive element connected with the powered system.
General Electric Company

Protection circuit and device for hdmi identification port

A protection circuit for an hdmi identification port and a device having the same. The protection circuit includes a first switch circuit and a second switch circuit, wherein one end of the first switch circuit is connected to an hdmi power port, and the other end of the first switch circuit is connected to the second switch circuit; one end of the second switch circuit is connected to the first switch circuit and the other end of the second switch circuit is connected to the hdmi identification port; and the first switch circuit isolates a voltage loaded to the hdmi power port, and drives the second switch circuit to be conducted and uses a standby voltage as an identification voltage of the hdmi identification port..
Le Shi Zhi Xin Electronic Technology (tianjin) Limited

Hot-swap protection circuit

A hot-swap protection circuit includes: a hot-swap circuit, a hot-swap detection circuit, and an n-well generation circuit, where the hot-swap detection circuit is configured to detect whether hot-swap is performed on the hot-swap circuit, and feed back a detection result to the n-well generation circuit; and the n-well generation circuit is configured to receive the detection result fed back by the hot-swap detection circuit, and output a control signal according to the detection result, to protect the hot-swap circuit. The hot-swap detection circuit is used to detect whether hot-swap is performed on the hot-swap circuit, and the detection result is fed back to the n-well generation circuit, so that the n-well generation circuit outputs a control signal according to the detection result fed back by the hot-swap detection circuit, to protect the hot-swap circuit, thereby preventing the hot-swap of the hot-swap circuit from burning a host or a peripheral device..
Capital Microelectronics Co., Ltd.

Power supply grounding fault protection circuit

The present disclosure relates to a power supply grounding fault protection circuit. A power supply grounding fault protection circuit may include a power supply circuit, a leakage grounding detection circuit, a signal amplifying and shaping circuit, a microcontroller control circuit, a power supply detection and indicator circuit, a tripping mechanism control circuit, a reverse grounding detection and execution circuit, a wireless network circuit, and an automatic resetting circuit.
Ze Chen

Back power protection circuit

Described is an apparatus which comprises: one or more signal lines; a transceiver coupled to the one or more signal lines; and a bias generation circuit to provide one or more bias voltages for the transceiver to tri-state the transceiver according to signal attributes of the one or more signal lines.. .
Intel Corporation

Protective main board for battery cell, electronic terminal and assembling battery cell of electronic terminal

Disclosed are a protective main board for a battery cell, an electronic terminal and a method for assembling a battery cell of an electronic terminal. The protective main board for a battery cell includes a main board body and a conducting component.
Xiaomi Inc.

Film-type semiconductor packages and display devices having the same

A film-type semiconductor package includes a semiconductor integrated circuit and a dummy metal pattern. The semiconductor integrated circuit is formed on a film and includes an electrostatic discharge (esd) protection circuit.
Samsung Electronics Co., Ltd.

Electrostatic discharge (esd) protection circuit

The invention provides an esd (electrostatic discharge) protection circuit including a clamp circuit, a switch element, and a detection circuit. The clamp circuit is coupled between an esd bus and a ground node.
Mediatek Inc.

Gate driver on array short-circuit protection circuit and liquid crystal panel including the same

The short-circuit protection circuit for a gate driver on array (goa) liquid crystal panel contains a power module, a first booster module, a feedback module, and a second booster module series-connected in the this order. A control module is electrically connected to the first booster, feedback, and second booster modules.
Shenzhen China Star Optoelectronics Technology Co. Ltd.

Protection circuit

The invention provides a protection circuit applied in an inductive boost converter, the inductive boost converter includes a transmission circuit and a charging circuit, the protection circuit includes a detection circuit and a control circuit, an input terminal of the detection and an output terminal of the transmission circuit are connected, a first output terminal of the detection circuit and an input terminal of the charging circuit are connected, a second output terminal of the detection circuit and an input terminal of the control terminal are connected; the detection circuit detects whether an input current from the transmission circuit is a short-circuit current, if the circuit is shorted, the result will be sent to the control circuit, the control circuit cuts the connection of the charging circuit and ground, which can prevent charges stored in the charging circuit from flowing backward into the input terminal of the inductive boost converter.. .
Shenzehn China Star Optoelectronics Technology Co. Ltd.

Area-efficient active-fet esd protection circuit

An electrostatic discharge (esd) protection circuit includes a high power supply rail (vdd) and a low power supply rail (vss). The esd protection circuit further includes an active shunt transistor coupled between vdd and vss.
Texas Instruments Incorporated

Esd protection circuits

An esd protection circuit, which is coupled between either an i/o pad or a power pad and a ground terminal, includes a non-snapback device and a snapback device. When the voltage across the non-snapback device is not less than the non-snapback trigger voltage, the non-snapback device is turned on.
Vanguard International Semiconductor Corporation

Shared transient voltage suppressor having built-in-test capability for solid state power controllers

Embodiments are directed to a lightning protection circuit configured for use in a solid state power controller (sspc) having at least one feed line and a plurality of load lines. The lightning protection circuit includes a shared transient voltage suppressor and a transient isolator communicatively coupled to the shared transient voltage suppressor.
Hamilton Sundstrand Corporation

Display device

To make the dimension of an electrostatic protection circuit small with the same maintained high in sensitivity. The electrostatic protection circuit is of the configuration that a first diode and a second diode are connected in series, wherein a semiconductor layer owned by each diode is configured to be sandwiched between a gate electrode and a conductive light shielding film.
Japan Display Inc.

Voltage regulator

The voltage regulator includes an overheat protection circuit. The overheat protection circuit includes: a temperature sensing circuit; a voltage difference sensing circuit configured to output a current depending on a voltage difference between a power source voltage to be supplied to a power supply terminal and the output voltage; an output current monitoring circuit; a second reference voltage circuit configured to generate a second reference voltage; a comparator circuit configured to compare an output voltage of the temperature sensing circuit and the second reference voltage to each other; and an overheat protection transistor is configured to turn off the output transistor when the result of the comparison indicates an overheated state.
Sii Semiconductor Corporation

Tft arrays, display panels, and display devices

The present disclosure relates to an array substrate, a display panel and a display device. The array substrate includes gnd wirings and goa areas.
Wuhan China Star Optoelectronics Technology Co. Ltd.

Display drive chip

A display drive chip includes an electrostatic discharge (esd) protection circuit unit configured to protect a circuit from esd, an output including output pins for ouputting an output signal from a circuit disposed in an electric circuit region located in a central part of the display drive chip, a main voltage metal line electrically connecting the esd protection circuit unit and the output to each other in the electric circuit region, an auxiliary voltage metal line that is connected to the esd protection circuit unit and is disposed in a region of the chip outside the perimeter of the electric circuit region, and connection metal lines electrically connect the auxiliary voltage metal line and the output pins to each other.. .
Samsung Electronics Co., Ltd.

Transient voltage suppressor having built-in-test capability for solid state power controllers

Embodiments are directed to a transient protection circuit configured for use in a sspc having a plurality of power channels. The transient protection circuit includes a shared transient voltage suppressor, and a shared protection line communicatively coupled to the shared transient voltage suppressor.
Hamilton Sundstrand Corporation

Broadband surge suppression module having optical coupling channel

A broadband surge suppression module having an optical coupling channel includes a surge protection circuit unit for eliminating or limiting a surge signal from an input digital signal, a light-emitting circuit unit for receiving an output signal of the surge protection circuit unit, converting the output signal into an optical signal, and transmitting the optical signal, a light-receiving circuit unit for receiving the optical signal from the light-emitting circuit unit, a signal restoration circuit unit for restoring a digital signal from an output signal of the light-receiving circuit unit, and a module casing unit for allowing the surge protection circuit unit, the light-emitting circuit unit, the light-receiving circuit unit, and the signal restoration circuit unit to be located therein, the module casing unit being formed to penetrate through an electromagnetic shielding wall for protecting a control system.. .
Electronics And Telecommunications Research Institute

Protection circuit

A protection circuit may include a first power line and a second power line, a plurality of high voltage interconnections, a plurality of low voltage interconnections, first and second pickup active regions, a high voltage protection transistor, and a low voltage protection transistor. The first power line and the second power line extending in parallel to each other while facing each other, and a plurality of high voltage interconnections are coupled to the first power line and extend toward the second power line while being spaced apart from each other.
Sk Hynix Inc.

Silicon-controlled rectifier current-protection circuit, related operating method, and dimming circuit and lighting device containing the same

The present disclosure provides a silicon-controlled silicon (scr) current-protection circuit. The scr circuit includes an scr detection circuit and a protection circuit, a first terminal of the scr detection circuit being connected to a current sampling point on an output terminal of an scr device, a second terminal of the scr detection circuit being connected to a power conversion circuit, a third terminal of the scr detection circuit being connected to a first terminal of the protection circuit, and a second terminal of the protection being connected to the power conversion circuit.

Adaptive open-load overvoltage control method and circuit

An overvoltage protection circuit and a method for protecting against an output from a power supply reaching overvoltage levels is provided. The overvoltage protection provides two operational modes for the power supply.

Combined active and passive high-power rf protection circuit

An electronic system comprising: 1) an antenna; 2) a transmission line coupled to the antenna; 3) rf electronics circuitry coupled to the transmission line that is sensitive to a high frequency emi/rf signal on the transmission line; and 4) a protection circuit comprising passive mode circuitry operational when the electronic system is powered off and active mode circuitry operational when the electronic system is powered on.. .

Ac overvoltage protection circuit

A power converter for operation from an ac power source may include a bridge rectifier having an input to receive an ac input voltage and an output to provide a dc voltage, the ac input voltage received from the ac power source through a fuse. An ac input overvoltage protection circuit may be configured to cause a short circuit across the ac input voltage in response to the dc voltage output from the bridge rectifier exceeding a predetermined voltage value for a predetermined period of time..

Driver circuit, manufacturing the driver circuit, and display device including the driver circuit

Provided are a driver circuit which suppresses damage of a semiconductor element due to esd in a manufacturing process, a method of manufacturing the driver circuit. Further provided are a driver circuit provided with a protection circuit with low leakage current, and a method of manufacturing the driver circuit.

Semiconductor device

An esd protection device including a si substrate with an esd protection circuit formed at the surface of the substrate; pads formed on the si substrate; a rewiring layer opposed to the surface of the si substrate, which includes terminal electrodes electrically connected to the pads. The rewiring layer includes a sin protection film formed on the surface of the si substrate to cover parts of the pads except regions in contact with openings (contact holes) formed in a resin layer, and the resin layer that is lower in dielectric constant than the sin protection film, and formed between the sin protection film and the terminal electrodes.

Load side blocking charger voltage from a battery load

Methods and apparatus for a protection circuit for a battery and a battery connected device during charging are provided. In one embodiment, the apparatus includes a load-blocking switch connected between a rechargeable battery and an electronic device and a charge-blocking switch connected between the rechargeable battery and a charger.
Motorola Solutions, Inc.

Battery pack and manufacturing the same

Disclosed is a battery pack including: a plurality of serially connected cells; a protection circuit module electrically connected with the plurality of cells; and a plurality of lead tabs configured to electrically connect the plurality of cells to the protection circuit module, in which the protection circuit module includes a plurality of connection portions, which is arranged in a row and connected with the plurality of lead tabs, respectively, and the plurality of lead tabs overlaps in an order in which the plurality of connection portions is arranged, so that an assembling process time is decreased.. .
Samsung Sdi Co., Ltd.

Liquid crystal display

A liquid crystal display device includes a plurality of pixel units, an electrode line surrounding the pixel units, at least one gate driver coupled with the pixel units via a plurality of gate lines, and at least one electrostatic discharge protection circuit coupled with the at least one gate driver and the electrode line.. .
Hannstar Display Corporation

Drive device for semiconductor element

A drive device to drive a semiconductor element includes: an identification signal generating circuit generating an identification signal depending on a type of an input error signal; a protection operation signal generating circuit generating a protection operation signal having a pulse width equal to that of one of the error signal and the identification signal having a longer pulse width; an identification signal terminal inputting and outputting the identification signal; a protection operation signal terminal inputting and outputting the protection operation signal; and a protection circuit performing an error protection operation depending on an own-phase protection operation signal generated by the protection operation signal generating circuit and an other-phase protection operation signal input through the protection operation signal terminal.. .
Mitsubishi Electric Corporation

Overcurrent protection circuit

An overcurrent protection circuit for use in a power supply system to control switching on of the circuit. The circuit is connected between a voltage source and a load.
Powerbyproxi Limited

Overvoltage protection self-trigger circuit for double fed induction generator (dfig) wind power system

Provided is an overvoltage protection device for protecting a wind turbine against overvoltage. The device includes a double fed induction generator (dfig) including a rotor connection including a plurality of electrical connections coupled to rotor leads of the dfig and a stator connection including a plurality of electrical connections coupled to stator leads of the dfig.
Ge Energy Power Conversion Technology Ltd

Battery management system for control of lithium power cells

An intelligent rechargeable battery pack having a battery management system for monitoring and controlling the charging and discharging of the battery pack is described. The battery management system includes primary and secondary protection circuits for monitoring the charging and discharging of the battery.
Zoll Circulation, Inc.

Battery pack

A battery pack includes: a core pack; a protection circuit module electrically connected to the core pack and including a connector for further electrically connecting to an external electronic device; and a metallic cover for covering the core pack and the protection circuit module while exposing the connector to the outside, the metallic cover including a protrusion adjacent to a ground portion of the connector.. .
Samsung Sdi Co., Ltd.

Semiconductor device

A semiconductor device includes a first circuit 1 and a second circuit 2 that are connected in series, a first terminal t1 that applies a first potential to a first power supply line dl1 of the first circuit 1, a second terminal t2 that applies a second potential to a second power supply line dl2 of the second circuit 2, a third terminal t3 that is connected to a signal transfer line of the first circuit 1, and a protection circuit that is connected to the third terminal t3, and discharges a current from the third terminal t3 to a fourth terminal t4 when a potential of the third terminal t3 becomes higher than a first threshold value. The first power supply line dl1 and the second power supply line dl2 are separated, and the fourth terminal t4 is not directly connected to the first power supply line dl1 and is electrically connected to a lead..
Thine Electronics, Inc.

Overheat detection circuit, overheat protection circuit, and semiconductor device

Provided is an overheat detection circuit capable of easily adjusting a detection temperature of the overheat detection circuit. The overheat detection circuit includes: a first resistor; a second resistor, which has the same temperature characteristics with the first resistor, and has an adjustable resistance value; and a heat sensitive element connected to one end of the second resistor, in which a first current, which is based on a first voltage, is supplied to the first resistor, a current, which is proportional to the first current, is supplied to the second resistor so that a second voltage is generated at another end of the second resistor, and when the first voltage and the second voltage are compared, a result of the comparison is output as an overheat detection signal..
Sii Semiconductor Corporation

Overvoltage protection circuit, led backlight driving circuit and lcd

An ovp circuit includes a voltage boost circuit, for boosting an input voltage into an output voltage in need and providing the output voltage to a load, a voltage control module for controlling the voltage boost circuit to boost an input voltage into an output voltage in need and for providing the output voltage to the load, an overvoltage protection module for monitoring a voltage of a positive terminal of the load to enable or disable the voltage control module, and an overvoltage adjusting module for monitoring an operation voltage of the load to adjust the overvoltage. It effectively prevents from the abnormal operation attributed by over practical operation voltage or prevents components from damage attributed by tardy protection.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Protection circuit for power amplifier

A power amplifier comprising a power stage comprises a voltage detection circuit configured to detect an output voltage of the power stage, a current detection circuit configured to detect an output current of the power stage, a control voltage generation circuit configured to generate a control voltage substantially proportional to the detected output voltage and the detected output current, and a control circuit configured to decrease an output power of the power stage when the control voltage exceeds a predetermined value.. .
Avago Technologies General Ip (singapore) Pte. Ltd

Method and system for overcurrent protection for insulated-gate bipolar transistor (igbt) modules

Circuits and methods for driving a load are disclosed. An exemplary driving circuit may include first and second switching devices electrically connected with each other in parallel.
Faraday&future Inc.

Multi-level output circuit having centralized esd protection

An apparatus is described. The apparatus includes an electronic circuit includes multiple supply voltage nodes, an output node and an internal node.

Esd protection and limiter circuit

Electrostatic discharge protection circuits and methods of operation are described. An esd circuit may include two circuit branches, each including a transistor, that are arranged to shunt voltage and current between two circuit terminals responsive to an over-voltage condition between the two terminals.
Macom Technology Solutions Holdings, Inc.

Esd protection circuit with two discharge time periods

An electrostatic discharge protection circuit may include discharge path circuitry to discharge charge on a supply line in response to detection of an esd event. The charge on the supply line may be discharged through the discharge path circuitry from when a first timing window opens until a second timing window closes.
Sandisk Technologies Inc.

Battery module

A battery module is disclosed. In one aspect, the battery module includes a plurality of rechargeable batteries and a plurality of electrode tabs connecting the rechargeable batteries.
Samsung Sdi Co., Ltd.

Wide bandgap junction barrier schottky diode with silicon bypass

A silicon surge bypass diode is co-packaged with a high bandgap junction barrier schottky diode. The co-packaged diodes may be used in a power circuits such as power factor correction circuits, converters, inverters circuit, motor drives, and protection circuits, for example.
United Silicon Carbide, Inc.

Protection circuit and electronic device

A protection circuit includes a control circuit that controls current between a first wiring and a second wiring and an application circuit that applies a voltage to the control circuit. The control circuit includes a first thin film transistor that controls the current.
Nlt Technologies, Ltd.

Surge protective device and surge protective system

A surge protective device (spd) includes a jack and a plug detachably attached by insertion to the jack. Inside the plug, a protection circuit which protects equipment to be protected against intruding lightning surge, a degradation detecting unit which detects a degradation state of the protection circuit, a display unit which displays the detection result, or the like, are provided.
Sankosha Corporation

System for implementation of i2t trip characteristic

There is provided a protection circuit configured to indicate an overcurrent condition of a conductor conducting a load current, the protection circuit including a first current integrator and a second current integrator, each of the first and second integrators being configured to integrate an input voltage proportional to the load current, a summing amplifier configured to receive an offset voltage, to amplify a signal from the second integrator, and to generate a trip threshold based on the input voltage and the offset voltage, and a comparator configured to compare an output of the first current integrator and the trip threshold, and to generate a trip signal at a trip time when the trip threshold is equal to an output of the first integrator, the trip signal indicating an overcurrent condition.. .
Leach International Corporation

Battery monitoring system and semiconductor device

A battery monitoring system includes a plurality of battery cells connected in series; a cell voltage measurement circuit for measuring a voltage of the battery cells; a first terminal connected to the cell voltage measurement circuit; a second terminal having a potential higher than that of the first terminal; and a protection circuit connected to the second terminal for discharging an electric current to the second terminal so that the cell voltage measurement circuit is protected.. .
Lapis Semiconductor Co., Ltd.

Plug connector and adapter

The invention provides a plug connector which, when abnormal heating occurs in a fitting portion with a counter connector, can sensitively cut off the current supply. The plug connector has: contacts; a body that holds the contacts; a metal shell that covers the body; and a printed circuit board on which the contacts are solder-connected.
Hosiden Corporation

Integrated circuit having an electrostatic discharge protection function and an electronic system including the same

An integrated circuit includes a data processing circuit, an electrostatic discharge (esd) protection circuit which is connected between a voltage rail and a ground rail and protects the data processing circuit from an esd event on the voltage rail, and a switch circuit for controlling a connection between the voltage rail and the data processing circuit in response to a control signal.. .
Samsung Electronics Co., Ltd.

Overvoltage protection circuitry

Overvoltage protection circuitry configured to protect internal integrated circuits within an implantable device in the presence of a high voltage event such as defibrillation or electrocautery. The circuitry allows for an internal node to rise above the voltage level of the high voltage event to insure that an overvoltage protection element is triggered, even if the voltage level of the high voltage event is below the voltage trigger level of the overvoltage protection element..
Medtronic, Inc.

Protection circuit

A protection circuit applied to a convertor including m pieces of driving switch modules each coupled to a power source, a load and one of m sets of driving signals. The ith driving switch module is controlled by the ith set of driving signals to selectively enable current paths between the power source and the load.
Industrial Technology Research Institute

Machine having at least one motor and one machine protection circuit

A machine, specifically a pump, a compressor, an agitator or a hoist, includes at least one motor and one machine protection circuit that includes a measurement device having at least one sensor for monitoring at least one parameter of the machine and includes an analysis device for analysing the parameters measured by the sensor and for activating a machine protection relay for switching off the machine. A switch cabinet positioned away from the machine is provided, and the machine protection circuit is spatially separated by the measurement device being arranged in the machine, and by the analysis device and the machine protection relay being arranged in the switch cabinet..
Kriwan Industrie-elektronik Gmbh

Scrs with checker board layouts

An electro-static discharge (esd) protection circuit includes a plurality of groups of p-type heavily doped semiconductor strips (p+ strips) and a plurality of groups of n-type heavily doped semiconductor strips (n+ strips) forming an array having a plurality of rows and columns. In each of the rows and the columns, the plurality of groups of p+ strips and the plurality of groups of n+ strips are allocated in an alternating layout.
Taiwan Semiconductor Manufacturing Company, Ltd.

Ac direct drive lamp having leakage current protection circuit

An ac direct drive lamp including a leakage current protection circuit includes an input stage configured to receive external power, a rectification circuit configured to rectify the external power received from the input stage, a control module electrically connected to the output stage of the rectification circuit and configured to sense and control the state of at least one of the rectification circuit, a switch module, and a light source, the switch module connected between the input stage and the control module in a feedback form and configured to switch on/off depending on a predetermined condition, and the light source electrically connected to the control module and configured to radiate light when power is applied.. .
Lg Innotek Co., Ltd.

Loudspeaker protection circuitry and methods

This application relates to methods and apparatus for thermal protection of a loudspeaker (102). A controller (106) is configured to generate a control signal (gmod) for modulating the gain of a signal processing chain (101) that drives the loudspeaker.
Cirrus Logic International Semiconductor Ltd.

Hot plugging protection

An overcharge protection circuit comprises a first series of first terminals a second series of second terminals, a first overvoltage protection device connected between each consecutive pair of first terminals, a current balancing device connected between each consecutive pair of second terminals, and a second overvoltage protection device connected between a first terminal and a second terminal. The second overvoltage protection device is configured to pass a current if a voltage over the second overvoltage protection device exceeds a threshold.
Freescale Semiconductor, Inc.

Semiconductor device

A semiconductor device includes an integration of a first external terminal to which a dc input voltage is input, a second external terminal to which a rectifying and smoothing circuit is externally connected, an output transistor connected between the first external terminal and the second external terminal, a control circuit arranged to turn on and off the output transistor so that a desired dc output voltage can be obtained from the rectifying and smoothing circuit, a current detection circuit arranged to generate a sense voltage corresponding to an on-current of the output transistor, and an overcurrent protection circuit arranged to monitor the sense voltage so as to perform an overcurrent protection operation. The overcurrent protection circuit performs a first overcurrent protection operation of a pulse-by-pulse method when detecting that the sense voltage exceeds a first threshold value voltage, and performs a second overcurrent protection operation of a timer latch method when detecting that the sense voltage continues to increase though the first overcurrent protection operation is being performed..
Rohm Co., Ltd.

Electrical device protection circuit for smart grid

An electrical device protection circuit for a smart grid includes a detection unit for detecting whether or not the output power source of an electrical device short-circuits; a switch unit for connecting power, input to the electrical device, to the output power source of the electrical device or disconnect it therefrom; and a control unit for generating a control signal for making the switch unit disconnect the power input to the electrical device from the output power source of the electrical device. According to the electrical device protection circuit for a smart grid, a simply configured protection circuit, arranged in the electrical device, to operates when the output power source of the electrical device short-circuits, whereby the electrical device may be prevented from being damaged..
Ezex Corporation

Semiconductor esd protection device and method

According to an embodiment, an electrostatic discharge (esd) protection circuit includes a first transistor having a first source/drain coupled to a first input/output terminal, a second source/drain coupled to a first reference voltage terminal, and a gate coupled to a second reference voltage terminal. The esd protection circuit further includes a direct current (dc) blocking circuit having a first input/output node coupled to the first input/output terminal, a second input/output node configured to be coupled to a useful circuit, and a third input/output node coupled a gate of the first transistor..
Infineon Technologies Ag

Portable lighting devices

A flashlight uses a reverse battery protection circuit to prevent current from flowing in a power control circuit when at least one battery is held in a reversed orientation, rather than a correct orientation, in a battery compartment of the flashlight.. .
Mag Instrument, Inc.

Multiple-unit semiconductor device

A multiple-unit semiconductor device (1) includes a normally-on type first fet (11) and a normally-off type second fet (12) that are connected to each other in series between a first terminal and a second terminal (17 and 19). The multiple-unit semiconductor device (1) further includes a protection circuit that includes a switching element for discharge (16) connected to the second fet in parallel and a trigger circuit that is disposed between the first terminal and the second terminal (17 and 19) and causes the switching element for discharge to turn to an on state when a surge is applied to the first terminal..
Sharp Kabushiki Kaisha

Ballast stabilizer-compatible lamp having leakage current protection circuit

A ballast stabilizer-compatible lamp including a leakage current protection circuit includes a first input stage configured to receive first external power, a second input stage configured to receive second external power, a first switch module electrically connected to the first input stage and configured to switch on/off depending on a predetermined condition, a second switch module electrically connected to the second input stage and configured to switch on/off depending on a predetermined condition, an overvoltage protection circuit electrically connected to the first switch module and the second switch module and configured to prevent an overvoltage, a control module electrically connected to the overvoltage protection circuit and configured to sense and control the state of the first switch module, the first switch module, and the overvoltage protection circuit, and a light source electrically connected to the control module and configured to radiate light when power is applied.. .
Lg Innotek Co., Ltd.

Overcharge protection circuit and controlling the same

An overcharge protection circuit may include a battery, a battery management system (bms) having an overcharge sensing unit for detecting cell voltage of the battery, comparing the cell voltage with a preset overcharge voltage, and then generating either a signal indicative of normal connection of the battery or an overcharge signal depending on a result of the comparison and a switch control unit for generating a control signal depending on a result of comparing a hold-up time of the overcharge signal with a preset hold-up time of the overcharge signal, and a switch for connecting or blocking a power source for supplying charging power to the battery in response to the control signal.. .
Hyundai Mobis Co., Ltd.

Short-circuit protection circuit for voltage sampling resistor of primary side converter

Disclosed is a short-circuit protection circuit for a voltage sampling resistor of a primary side converter, comprising a high voltage power transistor, a high voltage starting resistor, a first voltage dividing resistor of a port vdd, a second voltage dividing resistor of the port vdd, an nmos transistor, a diode, a first comparator, a second comparator, a third comparator, a time delay circuit, a filter, a first logic circuit, a second logic circuit, a current supply, a first and gate and a first inverter. The chip of the present disclosure is capable of correctly and effectively detecting whether the sampling resistor is shorted or not before the chip works normally, thereby avoiding the risk of damaging the chip by large current from the voltage feedback port fb due to turn-on of the switching transistor when the upper voltage sampling resistor is shorted, and greatly reducing the input power..
Wuxi Chipown Micro-electronics Limited

Semiconductor device

A semiconductor device for driving a load includes: a protection circuit configured to be connected to the load, the protection circuit including a protection diode, a diode-connected unipolar protection element, and a diode-connected bipolar protection element, all of which are connected in parallel so that when connected to the load, the protection diode, the diode-connected unipolar protection element, and the diode-connected bipolar protection element are connected in parallel to the load; and a switching circuit that is connected in series to the protection circuit and that performs a switching operation so as to drive the load. The protection diode, the diode-connected unipolar protection element, and the diode-connected bipolar protection element are connected in such a polarity that each is reverse-biased when the switching circuit is turned on, and consume a discharge current resulting from a counter-electromotive force from the load when the switching circuit is turned off..
Fuji Electric Co., Ltd.

Battery module

A battery module, including a plurality of rechargeable batteries; a holder fixing the rechargeable batteries; an electrode tab connecting the rechargeable batteries, the electrode tab including a bent portion bent and then extending in a side direction of the rechargeable batteries; and a balancing wire connecting the electrode tab and the protection circuit board, the bent portion of the electrode tab including a protruding portion protruding from a surface of the electrode tab.. .
Samsung Sdi Co., Ltd.

Electrostatic discharge protection circuit

In the disclosure, an electrostatic discharge (esd) protection circuit is coupled between a first power rail and a second power rail to discharge any esd stress. The esd protection circuit includes a detection circuit, a triggering circuit, and a dual silicon controlled rectifier (dscr) device.
Novatek Microelectronics Corp.

Semiconductor device

There is provided a semiconductor device capable of suppressing generation of leakage current of a diode, by applying a voltage to a gate of a gated junction diode (gjd). The semiconductor device includes an internal circuit connected with an input-output terminal, and an electrostatic discharge (esd) protection circuit configured to protect the internal circuit from esd, the esd protection circuit including a first diode, wherein the first diode includes a first gate which is formed on a substrate and to which a first recovery voltage is applied, a first well of a first conductivity type which is formed within the substrate and under the first gate, a first impurity region of the first conductivity type which is formed on one side of the first gate and within the first well and is higher in doping concentration than that of the first well, and a second impurity region of a second conductivity type which is formed on other side of the first gate and within the first well..
Samsung Electronics Co., Ltd.

Static electricity protection circuit, semiconductor integrated circuit device, and electronic apparatus

This static electricity protection circuit starts a discharge operation only if an applied voltage is greater than or equal to a set voltage, and protects a discharge circuit also when noise or the like is applied during a normal operation. This static electricity protection circuit includes: a resistor r1 and clamp circuit that are connected in series between nodes n1 and n2; a first transistor that turns on in accordance with an increase in a potential difference generated in the resistor r1; a resistor r2 and capacitor c2 that are connected via a node n4 between the nodes n1 and n2; a second transistor that is connected in series with the first transistor between the nodes n1 and n5; a resistor r3 connected between the nodes n5 and n2; a third transistor connected between the nodes n4 and n2; and a discharge circuit connected between the nodes n1 and n2..
Seiko Epson Corporation

Battery pack

Provided is a battery pack, which can provide a space for mounting an external element or an external device by forming a stepped portion in a protection circuit module (pcm). The battery pack includes a bare cell having a positive lead tab and a negative lead tab, a protection circuit module (pcm) electrically connected to the positive lead tab and the negative lead tab and having a stepped portion recessed from one side to the other side and having a smaller height than a peripheral portion, and a first insulating member having a groove formed to correspond to the stepped portion and surround at least a portion of the bare cell and the pcm..
Samsung Sdi Co., Ltd.

Display panel and display device having the same

A display panel includes: an electrostatic discharge (esd) protection circuit area in a peripheral area surrounding a display area including pixels, the esd protection circuit area including esd protection circuits; a fan-out area in the peripheral area, including fan-out lines to receive data signals and a first pad to receive a first global signal; a common line area between the esd protection circuit area and the fan-out area, including a first common line extending lengthwise in a pixel row direction; a first transmission line connecting lengthwise from the first pad to the first common line to transmit the first global signal to the first common line; and first global signal lines extending lengthwise in a pixel column direction from the first common line to the display area to concurrently transmit the first global signal to the pixels. The first transmission line is wider than the first global signal lines..
Samsung Display Co., Ltd.

Wearable device and electrostatic discharge protection circuit of the same

A wearable device is provided. The wearable device includes a first functional module, at least one exposed contact, a second functional module, an esd protection circuit that converts an esd input to an output voltage when the esd input occurs, a detection module that detects whether the exposed contact is connected to an external electronic module, a switch module and a processing module.
Htc Corporation

Protection an electrical load, voltage converter comprising a protection apparatus, and protecting an electrical load

An apparatus and a method for protecting an electrical load, in particular an electrical load having an inductance. For this purpose, the present invention provides a protection apparatus comprising an overcurrent protection device and a protection circuit.
Robert Bosch Gmbh

Liquid crystal display panel

A liquid crystal display panel is disclosed. The liquid crystal display panel comprises a testing region, which comprises testing lines.
Shenzhen China Star Optoelectronics Technology Co., Ltd.

Protection circuit for power amplifier

A radio frequency device includes a radio frequency (rf) power amplifier (pa) circuit including a driver stage configured to amplify an input signal to generate an output signal and a power stage configured to amplify the output signal, a first bias circuit configured to supply a first bias current to the driver stage, a second bias circuit configured to supply a second bias current to the power stage, and a protection circuit configured to limit a current flowing in the rf pa. The protection circuit is coupled between the first bias circuit and the second bias circuit..
Avago Technologies General Ip (singapore) Pte. Ltd.

Voltage regulator

To provide a voltage regulator equipped with an overcurrent protection circuit which needs not to separately adjust a limited current and a short-circuited current and is capable of collectively adjusting them. There is provided an overcurrent protection circuit equipped with an output current limitation circuit which distributes a current supplied from a transistor sensing an output current of an output transistor and controls a gate voltage of the output transistor by the distributed current to limit the output current.
Sii Semiconductor Corporation

Reverse current protection circuit

In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node.
Texas Instruments Incorporated

Ground fault protection circuit and ground fault circuit interrupter

The present invention relates to a ground fault protection circuit and a ground fault circuit interrupter. A ground fault protection circuit may include a power supply circuit, a ground fault detection circuit, a signal amplifying and shaping circuit, a microcontroller control circuit, a power supply detection and indicator circuit, a tripping mechanism control circuit, and a reverse grounding detection and execution circuit.

Static electricity protection circuit, electro-optic device and electronic device

In a static electricity protection circuit according to the invention, a first wiring is electrically connected to a drain of a first p-type transistor and a gate and a source of a first n-type transistor; a second wiring is electrically connected to a gate and a source of the first p-type transistor, a drain of the first n-type transistor, a drain of a second p-type transistor and a gate and a source of a second n-type transistor; and a third wiring is electrically connected to a gate and a source of the second p-type transistor and a drain of the second n-type transistor.. .
Seiko Epson Corporation

Semiconductor device, liquid crystal display panel, and mobile information terminal

A semiconductor device includes a plurality of sets of external drive terminals in a marginal region along one long side of a rectangular semiconductor substrate, a plurality of sets of esd protection circuits arranged in the marginal region and coupled to corresponding sets of the drive terminals, and a plurality of output circuits coupled to corresponding sets of the drive terminals. Each set of drive terminals in a plurality of n columns along a y direction is laid out in a staggered arrangement with drive terminals in adjacent columns shifted relative to each other.
Renesas Electronics Corporation



Protection Circuit topics:
  • Protection Circuit
  • Esd Protection
  • Esd Protection Circuit
  • Electrostatic Discharge
  • Disconnect
  • Transistors
  • Semiconductor
  • Enable Signal
  • Integrated Circuit
  • Inrush Current
  • Computing Device
  • Magnetic Field
  • Data Processing System
  • Data Processing
  • Hierarchical


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