Images List Premium Download Classic

Flyback Converter

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


loading
Power supply
Noble Corporation
June 15, 2017 - N°20170170720

A power supply circuit includes: an anti-electromagnetic interference circuit configured to receive input alternating current power and to output filtered alternating current power; a rectifier circuit configured to rectify the filtered alternating current power; a current correction circuit configured to perform passive power factor correction on the rectified alternating current power; a single-ended flyback converter circuit coupled to the output ...
Device and method for determining a voltage
Robert Bosch Gmbh
May 18, 2017 - N°20170138987

The invention relates to a device and to a method for determining a voltage. The voltage to be determined is a direct voltage at the input of a flyback converter. The flyback converter comprises at least a flyback-converter transformer and a switching element on the primary side of the flyback-converter transformer. In order to determine the voltage at the input ...
Ac-dc power converters with improved voltage output level transitions
Apple Inc.
May 04, 2017 - N°20170126133

This disclosure relates to power converters that are capable of providing smooth transitions between multiple output voltage levels. The converter's output may need to be changed from, e. G., 5v to 12v, 15v, or 20v—based on the charging device's request. By using improved power converter designs comprising both a flyback converter circuit and variable-frequency buck converter circuit that ...
Flyback Converter Patent Pack
Download + patent application PDFs
Flyback Converter Patent Applications
Download + Flyback Converter-related PDFs
For professional research & prior art discovery
inventor
  • + full patent PDF documents of Flyback Converter-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Delta-sigma modulation for power converter control
Infineon Technologies Austria Ag
April 27, 2017 - N°20170117812

A flyback converter is described that in some examples includes an integrated circuit that includes a delta-sigma converter and a cascaded integrator-comb filter configured to determine: a proportional factor, an integral factor, and a derivative factor associated with a secondary-side voltage across a secondary-side winding of the converter. The integrated circuit uses each factor to control a secondary switching element ...
Tapped winding flyback converter for multiple output voltages
Apple Inc.
March 30, 2017 - N°20170093290

This disclosure relates to power converters capable of providing multiple output voltage levels. With respect to usb-c adapter design, the converter's output may need to be changed between different voltage levels, e. G., a low voltage (such as 5v, 10v), an intermediate voltage (such as 12v, 20v), or a high voltage (such as 20v, 40v)—based on the charging ...
High efficiency primary and secondary bias flyback converter with dual outputs
Apple Inc.
March 30, 2017 - N°20170093289

This disclosure relates to flyback transformer-based power converters that are capable of providing multiple output voltage levels. With respect to usb-pd adapter design, the flyback converter's output may be changed from 12v to 20v—based on the charging device's request. By using a bias circuit that monitors an output voltage level of the flyback converter, a bias voltage for ...
Flyback Converter Patent Pack
Download + patent application PDFs
Flyback Converter Patent Applications
Download + Flyback Converter-related PDFs
For professional research & prior art discovery
inventor
  • + full patent PDF documents of Flyback Converter-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Dc-dc flyback converter with primary side auxiliary voltage output
Osram Sylvania Inc.
March 02, 2017 - N°20170063240

A dc-dc flyback converter includes a transformer and a switching component connected between the transformer and a ground. The switching component controls current flow through the primary winding of the transformer. A snubber circuit is connected between ground and the connection between the transformer and the switching component. The snubber circuit reduces transient voltage spikes across the switching component. A ...
Flyback converter
Lite-on Technology Corp.
March 02, 2017 - N°20170063213

A flyback converter includes: a transformer including a primary winding and a secondary winding; a first switch coupled to the primary winding; a first control module configured to control the first switch; a second switch coupled to the secondary winding; and a second control module configured to control the second switch, such that the second switch operates in an on ...
Flyback converter output current evaluation circuit and evaluation method
Alpha And Omega Semiconductor (cayman) Ltd.
February 16, 2017 - N°20170047853

An output current calculating circuit for a flyback converter operating under ccm and dcm is disclosed. The off current value ioff and the blanking current value ileb flowing through a sensing resistor are calculated using a detection module and are summed together using a current summing unit. A voltage converted from the sum value of the off current value ioff ...
Transformer, flyback converter and switching power supply with the same
Silergy Semiconductor Technology (hangzhou) Ltd
February 16, 2017 - N°20170047848

A flyback converter can include: a power switch controlled to be turned on/off to control a current through a primary side; a first primary winding coupled between an input terminal and a first terminal of the power switch, where a dotted terminal of the first primary winding is coupled to a first terminal of the power switch; a second ...
Led luminaire driving circuit and method
Microsemi Corporation
February 09, 2017 - N°20170041995

A flyback converter is provided with a first output associated with a first secondary winding, a primary side controller arranged to maintain the first output at a predetermined voltage level and a second output associated with a second secondary windings; an led controller. A first secondary electronically controlled switch is responsive to the led controller; a first led luminaire arranged ...
Flyback converter with secondary side regulation
Texas Instruments Incorporated
February 02, 2017 - N°20170033698

Disclosed examples include flyback converters, control circuits and methods to facilitate secondary side regulation of the output voltage. A primary side control circuit operates a primary side switch to independently initiate power transfer cycles to deliver power to a transformer secondary winding in a first mode. A secondary side control circuit operates a synchronous rectifier or secondary side switch to ...
Dead time compensation for synchronous rectifiers in adaptive output powers
Fairchild (taiwan) Corporation
December 22, 2016 - N°20160373019

A synchronous rectifier controller for an adaptive output power converter is provided. The synchronous rectifier controller includes a voltage detection circuit, a threshold generation circuit, and a driver. The voltage detection circuit detects an output voltage of the adaptive output power converter to generate a detection signal. The threshold generation circuit is coupled to the voltage detection circuit. The threshold ...
Flyback Converter Patent Pack
Download + patent application PDFs
Flyback Converter Patent Applications
Download + Flyback Converter-related PDFs
For professional research & prior art discovery
inventor
  • + full patent PDF documents of Flyback Converter-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Power control module with improved start requirements
Sanken Electric Co., Ltd.
December 15, 2016 - N°20160365799

Circuits and devices are described that provide power to appliances and other devices via a power correction circuit and an llc converter, which may for example include resonant series converters and flyback converters. The circuits and devices economize on board space, part size and power start up time by separately powering up the controller circuit portion prior to powering up ...
Pfm scheme for boost and flyback converter in led backlight application
Apple Inc.
November 24, 2016 - N°20160345395

This application relates to systems, methods, and apparatus for controlling a switching frequency of a boost or flyback converter to be above an audible frequency range when operating the boost or flyback converter in a pulse frequency modulation (pfm) mode. The boost or flyback converter uses one or more switches for converting power for a display panel. In order to ...
Enhanced flyback converter
Ohio State Innovation Foundation
November 24, 2016 - N°20160344305

A dc/dc flyback converter that exhibits reduced switch and transformer voltage stresses in comparison to known flyback converters. The flyback converter also employs soft switching. Embodiments of such flyback converters may be used, without limitation, in electric vehicles and hybrid electric vehicles. A front-stage of the flyback converter comprises a dc/ac step-down circuit that may be separately used ...
Switched mode power supply with efficient operation at light loads and method therefor
Semiconductor Components Industries, Llc
November 24, 2016 - N°20160344293

A switched mode power supply includes an active clamp flyback converter having an input for receiving an input voltage, and an output for providing a regulated voltage, the active clamp flyback converter having a first switch for controlling a flow of current through a primary winding of a flyback transformer, and a second switch for clamping a switch node on ...
Constant power supply for led emergency lighting using smart output resetting circuit for no load ...
Iota Engineering, Llc
November 10, 2016 - N°20160330811

A constant power backup power supply for led lighting fixtures is disclosed. The power supply includes a storage battery that is charged while an ac power source is in an on condition. When ac power transitions to an off condition, a capacitor bank charged by the battery supplies current to the primary side of a flyback converter operating in discontinuous ...
Reduced flicker driver circuit for led systems
Hubbell Incorporated
November 03, 2016 - N°20160323945

Led systems and circuits for generating a driver output for powering one or more led devices are provided. A dimmable driver circuit can include a controller configured to reduce output ripple current to reduce flicker over the dimming range of the led system. The dimmable driver circuit can receive a dimming control signal (e. G. A 0v to 10v dimming ...
Dual ac and dc output flyback converter and associated systems and methods
University Of Connecticut
November 03, 2016 - N°20160322915

Exemplary embodiments of flyback converters are provided. The flyback converters include a voltage input, a flyback transformer including a primary winding circuitry, and first and second secondary winding circuitries. The flyback transformer can be electrically connected to the voltage input. The first and second secondary winding circuitries can be electrically connected to the flyback transformer. The first secondary winding circuitry ...
Flyback converter, control circuit and control method therefor
Silergy Semiconductor Technology (hangzhou) Ltd.
November 03, 2016 - N°20160322908

The disclosure relates to a flyback converter, a control circuit and a control method therefor. In the control method, a power stage circuit is controlled at a light load to operate alternatively in a pulse width modulation mode (i. E. A constant switching frequency mode) and in a constant on time mode, in accordance with a voltage compensation signal. Thus, ...
Loading