239 patents
Page 10 of 12
Utility
Switching Converter and a Method Thereof
2 Dec 20
A control circuit having: a logic circuit, configured to provide a high side boot-strap capacitor control signal set and a low side boot-strap capacitor control signal set; a high side boot-strap capacitor control circuit, configured to provide a high side power signal to control a high side power switch; a high side boot-strap capacitor, having a first terminal coupled to a control terminal of the high side power switch, and a second terminal coupled to the high side boot-strap capacitor control circuit; a low side boot-strap capacitor control circuit, configured to provide a low side power signal to control a low side power switch; and a low side boot-strap capacitor, having a first terminal coupled to a control terminal of the low side power switch, and a second terminal coupled to the low side boot-strap capacitor control circuit.
Naixing Kuang
Filed: 11 May 20
Utility
Mix-mode PFC circuit and a method thereof
30 Nov 20
A control method of a PFC (Power Factor Correction) circuit having at least one power switch, the control method having: producing an effective value of an input voltage; generating a compensation signal based on an output voltage and an output voltage reference signal; generating an on time signal based on the compensation signal, the effective value of the input voltage, a first on time period value and a second on time period value; generating an on time delay signal based on the input voltage, the output voltage, the first on time period value, the effective value of the input voltage and the compensation signal; and generating a current valley signal based on the input voltage, the effective value of the input voltage, the compensation signal, the second on time period value, and an inductance value of the inductor adopted by the PFC circuit.
Wenbin Lu
Filed: 25 Nov 19
Utility
Power transistor driver with reduced spikes for switching converters
16 Nov 20
A driver for driving a power transistor, the driver having: a first transistor, and a second transistor; wherein (1) when the first transistor is turned on, the second transistor is simultaneously turned on, and wherein after the second transistor remains on for a first time period, the second transistor is turned off for a second time period during when a switching voltage at a second terminal of the power transistor is rising, and the second transistor is turned on after the second time period is over; and (2) when the first transistor is turned off, the second transistor is simultaneously turned off.
James Nguyen
Filed: 15 Oct 19
Utility
Input AC voltage sensing for flyback circuit
2 Nov 20
Input AC voltage sensing for a flyback circuit.
Siran Wang
Filed: 22 Jan 19
Utility
Current threshold regulation method used in switching converters
28 Sep 20
A current threshold regulation method is used in a switching converter with a tank element and a transistor.
Suhua Luo, Qian Ouyang, Wei Yuan, Pengpeng Ma
Filed: 9 Apr 19
Utility
System and method for automatically testing voltage regulators
21 Sep 20
A method for automatically testing a voltage regulator, including: providing an auto-test setting to a test master, wherein the auto-test setting specifies an auto-sweep setting and a loop comprising an ordered set of serial command frames; producing, in the test master, a test suite comprising a plurality of serial command frames by executing the loop multiple times according to the auto-sweep setting until an array of a preset variable corresponding to the auto-sweep setting is traversed, wherein the preset variable is changed in each iteration of the loop; sequentially transmitting every serial command frame to the voltage regulator; and receiving every resulting behavior of the voltage regulator when operated in accordance with the every serial command frame.
Wangmiao Hu, Lijie Jiang, Qian Ouyang, Qingqing Zheng, Binci Xu, Jinghai Zhou, Eric Yang
Filed: 5 Jun 18
Utility
Driving circuit allowing efficient turning-off of synchronous rectifiers
21 Sep 20
A driving circuit and driving method for driving a synchronous rectifier.
Lin Feng, Jiayou Ye
Filed: 13 Jun 19
Utility
Zero-voltage-switching flyback converter
31 Aug 20
A method of controlling a flyback circuit and control circuit thereof.
Yancun Li
Filed: 24 Jun 19
Utility
System and method for standby mode operation of power management system
24 Aug 20
A power management system having: a core rail, configured to provide a core voltage to a core; a GT rail, configured to provide a GT voltage to a graphic terminal; and a VR thermal indicative pin, coupled to a core thermal indicative pin of the core; wherein the VR thermal indicative pin is pulled down for a preset time duration once the core rail is commanded to exit a PS4 state, or for a time duration beginning when the core rail is commanded to exit the PS4 state ending when the GT rail is commanded to exit the PS4 state.
Jeffrey Jull
Filed: 8 Nov 18
Utility
Voltage regulators with controlled output voltage and the method thereof
24 Aug 20
A voltage regulator provides an output voltage and an output current.
Binci Xu, Yongliang Wang, Tao Zhao, Lijie Jiang
Filed: 18 Apr 19
Utility
Mix-mode PFC Circuit and a Method Thereof
29 Jul 20
A control method of a PFC (Power Factor Correction) circuit having at least one power switch, the control method having: producing an effective value of an input voltage; generating a compensation signal based on an output voltage and an output voltage reference signal; generating an on time signal based on the compensation signal, the effective value of the input voltage, a first on time period value and a second on time period value; generating an on time delay signal based on the input voltage, the output voltage, the first on time period value, the effective value of the input voltage and the compensation signal; and generating a current valley signal based on the input voltage, the effective value of the input voltage, the compensation signal, the second on time period value, and an inductance value of the inductor adopted by the PFC circuit.
Wenbin Lu
Filed: 25 Nov 19
Utility
Voltage regulator and associated auto-loop regulation system and method
27 Jul 20
An auto-loop regulation system for a voltage regulator receives a plurality of pre-determined loop parameters through an interactive computing equipment, and the voltage regulator operates according to the plurality of pre-determined loop parameters, wherein the interactive computing equipment regulates at least one of the loop parameters automatically in real time according to an online loop value when the voltage regulator is operating online, and the interactive computing equipment keeps regulating the loop parameters until the online value of the voltage regulator matches with a target value.
Lijie Jiang, Xiaokang Wu, Suhua Luo, Qian Ouyang
Filed: 28 Oct 18
Utility
Power converter with improved load transient response and associated control method
27 Jul 20
A power converter including a load transient enhancing module and associated method for improving load transient response of the power converter.
Changjiang Chen, Lei Li
Filed: 15 Oct 18
Utility
Test System and Test Method for a Voltage Regulator with Multi-mode Control
22 Jul 20
A test method of a voltage regulator having a plurality of parameters that need to be set, the test method includes: receiving a user requirement on a computer; generating a plurality of setting combinations of the plurality of parameters, the plurality of parameters has different combination of values in different setting combinations; downloading the plurality of setting combinations to the voltage regulator via a first I/O bus and configuring the voltage regulator with each setting combination; configuring communication between a controller provided by the computer and measurement devices; executing the communication between the controller and the measurement devices via a second I/O bus; and displaying test result of each configured voltage regulator on the computer.
Lei Miao, Long Li, Siran Wang
Filed: 20 Jan 20
Utility
Single stage multi-outputs circuit and a method thereof
13 Jul 20
A control circuit of a power converter providing at least a first output voltage and a second output voltage, having: a first loop control circuit, configured to provide a first error amplifying signal based on the first output voltage and a first reference voltage; a second loop control circuit, configured to provide a second error amplifying signal based on the second output voltage and a second reference voltage; a saturation detecting circuit, configured to provide a saturation indicating signal based on the first error amplifying signal and a saturation reference signal; and a first current source circuit, configured to charge an output terminal of the second error amplifier based on the saturation indicating signal.
Bairen Liu, Shufa Jiang, Bo Yu
Filed: 25 Nov 19
Utility
Controller and control method used in resonant converters
13 Jul 20
A control method used in a resonant converter with a switching circuit and a resonant circuit, wherein the switching circuit has a high side transistor coupled between an input voltage and a switch node and a low side transistor coupled between the switch node and a reference ground, the resonant circuit is coupled to the switch node and has a resonant capacitor and a resonant inductor.
Lei Miao
Filed: 25 Jun 19
Utility
Single Stage Multi-outputs Circuit and a Method Thereof
8 Jul 20
A control circuit of a power converter providing at least a first output voltage and a second output voltage, having: a first loop control circuit, configured to provide a first error amplifying signal based on the first output voltage and a first reference voltage; a second loop control circuit, configured to provide a second error amplifying signal based on the second output voltage and a second reference voltage; a saturation detecting circuit, configured to provide a saturation indicating signal based on the first error amplifying signal and a saturation reference signal; and a first current source circuit, configured to charge an output terminal of the second error amplifier based on the saturation indicating signal.
Bairen Liu, Shufa Jiang, Bo Yu
Filed: 25 Nov 19
Utility
Control Circuit Having Power Limit for an Ac-dc Converter and Integrated Circuits Thereof
1 Jul 20
A control circuit having power limit for controlling an AC-DC voltage converter.
Yuedong Chen, Haishi Wang, Lin Feng
Filed: 18 Dec 19
Utility
Symmetrical power stages for high power integrated circuits
22 Jun 20
A circuit assembly for a power converter includes a substrate, power stage integrated circuit (IC) dies, and output inductors that connect switch nodes of the power stage IC dies to an output node of the power converter.
Jinghai Zhou, Chia-Hsin Chang
Filed: 15 Jan 20
Utility
Current Generating Circuit Generating a Current Relevant to a Reference Voltage
17 Jun 20
A current generating circuit generating a current relevant to a reference voltage.
Zhijiang Yang
Filed: 10 Dec 19