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Voltage Comparator

Voltage Comparator-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Electrical system comprising a stack of electrochemical cells and method for controlling said system
Areva Stockage D'energie
December 07, 2017 - N°20170352898

An electrical system includes a stack (3) of electrochemical cells (5), a power converter (9) electrically connected to the stack (3), a voltage comparator (7) for comparing the voltage at the terminals of at least one group of at least one electrochemical cell (5) of the stack (3) to a threshold voltage, and a control module (11) for controlling the converter (9). The control module (11) includes a generator (74) for ...
Igniter
Areva Stockage D'energie
October 19, 2017 - N°20170302060

An igniter includes a switch element and a switch control apparatus. An ignition signal igt is input to an input line of the switch control apparatus. A high-frequency filter removes high-frequency noise from the input line. A voltage comparator compares an output voltage vfil of the high-frequency filter with a reference voltage vref, so as to generate a judgment signal ...
Charge pump voltage regulator
Semiconductor Manufacturing International (beijing) Corporation
October 05, 2017 - N°20170288532

A charge pump voltage regulator is provided. The charge pump voltage regulator includes a charge pump circuit, where an output terminal of the charge pump circuit outputs a stable voltage. The charge pump voltage regulator also includes a voltage divider circuit suitable to divide the stable voltage to output a divided voltage and a clock oscillator providing a drive clock ...
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Memory controllers
Hewlett Packard Enterprise Development Lp
August 31, 2017 - N°20170249987

A memory controller includes a voltage driver and a voltage comparator. The voltage driver applies a variable voltage to a selected line of a crossbar array to determine a first measured voltage that drives a first read current through a selected memory cell of the crossbar array. The voltage driver applies the variable voltage to the selected line to determine ...
Short detection circuit and display device including the same
Samsung Display Co., Ltd.
August 24, 2017 - N°20170245379

A short detection circuit includes a reference voltage generator that generates a reference voltage based on a power voltage, a comparison voltage generator that generates a comparison voltage that is higher or lower than a normal state voltage of a short detection target voltage by a predetermined adjustment voltage based on the reference voltage, a voltage comparator that generates a ...
Feedback control circuit and method thereof
Realtek Semiconductor Corp.
July 20, 2017 - N°20170207702

Disclosed are a feedback control circuit and a method thereof. The feedback control circuit includes a voltage comparator, a calibration voltage generator and processor. The voltage comparator receives a middle-point voltage and a calibration voltage, compares the middle-point voltage and calibration voltage, and outputs a reference voltage pulse signal. The calibration voltage generator generates the calibration voltage and outputs it ...
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Voltage compensation circuits and voltage compensation methods thereof
Shenzhen China Star Optoelectronics Technology Co., Ltd.
June 29, 2017 - N°20170186354

The present disclosure discloses a voltage compensation circuit and the method thereof. The voltage compensation circuit includes a power management chip, a feedback circuit, and a control circuit. A gate driving voltage (vgh) connects an input end of the control circuit, the input end of the control circuit connects to a first end of the fifth resistor (r5), and a ...
Voltage detection circuit
Freebird Semiconductor Corporation
June 15, 2017 - N°20170170821

A detection circuit includes an under-voltage circuit. The under-voltage circuit includes a first gan high electron mobility transistor (hemt) configured to operate as both a voltage comparator and a voltage reference. The detection circuit can also include an over-voltage detection circuit. The over-voltage detection circuit includes a second gan hemt that is also configured to operate as both a voltage ...
Method and system to prevent voltage sagging in a redundant power supply configuration
Cisco Technology, Inc.
June 08, 2017 - N°20170163027

Aspects of the subject technology relate to a system and method for preventing voltage sagging using an oring-fet in a redundant power supply configuration. Each redundant power supply includes an oring-fet and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the oring-fet during power up. In the event input voltage is ...
Digitally calibrated successive approximation register analog-to-digital converter
Avnera Corporation
May 04, 2017 - N°20170126240

A circuit can include a voltage comparator vd having a first input, a second input, and an output; a first plurality of capacitors cp[0:n] that each have a top plate and a bottom plate, wherein each top plate is electrically coupled with the first input of the voltage comparator vd, wherein each top plate is also switchably electrically coupled ...
Analog to digital converter
Texas Instruments Incorporated
April 20, 2017 - N°20170111053

An analog to digital converter includes an analog input and a voltage comparator coupled to the analog input for comparing a voltage at the analog input to a digitally synthesized waveform. A digital to analog converter (dac) generates the digitally synthesized waveform. The dac includes a plurality of capacitors selectively connected in parallel wherein the period between the selection of ...
High speed low current voltage comparator
Silicon Laboratories Inc.
March 30, 2017 - N°20170093399

In one embodiment, a voltage comparator circuit includes a first comparator circuit to compare a first voltage and a second voltage and a second comparator circuit to compare the first voltage and the second voltage. The voltage comparator circuit may include charge storage circuitry and positive feedback circuitry. Such circuitry may boost current within the first and second comparator circuits ...
Memory driving circuit
Being Advanced Memory Taiwan Limited
March 16, 2017 - N°20170076796

A memory driving circuit is disclosed herein. The memory driving circuit includes a programmable current source, a reference voltage generation unit and a voltage comparator unit, the programmable current source generates a second current according to a first current. The second current flows into a memory cell, and produces a device voltage at the input of the memory cell. The ...
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System and method for transmitting power over data lines
Airbus Operations Gmbh
February 16, 2017 - N°20170048073

A network includes a power over data link, a data switch coupled to a data bus and configured to transmit and/or receive data from and/or to the data bus via the power over data link, and a service device coupled to the data switch via the power over data link and configured to transmit and/or receive data ...
Rectifier circuit, and contactless power supply device
Panasonic Intellectual Property Management Co., Ltd.
February 09, 2017 - N°20170040842

The rectifier circuit includes: three terminals a, k, vr; voltage comparator including a positive input terminal, a negative input terminal, and a comparative output terminal; current switching unit including source terminal, drain terminal, and control terminal; first switching unit that conducts or cuts off between source terminal and control terminal of the current switching unit; second switching unit that conducts ...
Dynamic current sink for stabilizing low dropout linear regulator (ldo)
Mediatek Inc.
February 09, 2017 - N°20170038783

A dynamic current sink includes the following elements. A voltage comparator compares a reference voltage with a second control signal from an ldo (low dropout linear regulator) to generate a first control signal. A first transistor selectively pulls down a voltage at a first node according to the first control signal. The inverter is coupled between the first node and ...
Circuits and methods providing clock frequency adjustment in response to supply voltage changes
Qualcomm Incorporated
January 05, 2017 - N°20170005665

Methods, systems, and circuits for providing compensation for voltage variation are disclosed. A system includes: a voltage comparator configured to assert a control signal in response to detecting that one or more of power supply voltages droops below a threshold amount; a phase locked loop (pll) configured to divide an output frequency for the pll in response to the assertion ...
Output control circuit
Panasonic Intellectual Property Management Co., Ltd.
January 05, 2017 - N°20170005631

A gain control circuit includes: a gain switching controller that changes the gains of a fundamental frequency amplifier and an n-multiplied frequency amplifier; and a detection voltage comparator that determines whether the operating state of an n-multiplier is a saturated operation or a linear operation. The detection voltage comparator determines the operating state of the n-multiplier by comparing an amount ...
Dimming circuit for led
Shenzhen China Star Optoelectronics Technology Co., Ltd.
December 22, 2016 - N°20160374184

A led dimming circuit, configured to control a plurality of led strings to light up at different moment in a cycle, the circuit includes several sets of led strings connected in parallel respectively; driving circuits coupled to the led strings and driving them to light up; control circuits coupled to the driving circuits to control the led series to light ...
Charging system having active error correction for rechargeable batteries
Shenzhen China Star Optoelectronics Technology Co., Ltd.
November 24, 2016 - N°20160344198

A recharging system for a battery. The internal resistance of the battery and its leads produce an error voltage when a charging current flows through the battery and the leads. The error voltage combines with the inherent battery voltage to produce an inflated voltage. A filtering circuit receives the inflated voltage. The filter circuit quantifies the error voltage. A subtractor ...
Voltage comparator circuit and method
Fairchild Semiconductor Corporation
November 17, 2016 - N°20160336932

This document discusses, among other things, a voltage comparator, an integrated circuit, or a voltage comparison method having increased precision. The hysteresis comparator or the integrated circuit can include first and second input transistors, each having a gate configured to receive a respective first or second input voltage. A bias power source can generate a bias current to a first ...
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