239 patents
Page 2 of 12
Utility
Multiphase switching converter with current mode constant on-time control
5 Sep 23
A controller for a multiphase switching converter has a set generation circuit, a frequency divider, and a plurality of sub control circuits.
Lijie Jiang, Binci Xu, Chao Liu
Filed: 20 Dec 21
Utility
Voltage Converter with Over-current Protection and Over-current Protection Method Thereof
31 Aug 23
An over-current protection circuit has a current sensing circuit, an over-current comparing circuit, an isolation circuit and a control circuit.
Guangzhuo Li, Pengfei Liu, Siran Wang
Filed: 17 Jan 23
Utility
Short protection circuit with a hiccup protection mode and the method thereof
22 Aug 23
A short protection method for a power converter having an output terminal for providing an output voltage.
Yong Zhou
Filed: 30 Jun 21
Utility
Semiconductor Device with Low Pinch-off Voltage and Methods for Manufacturing the Same
17 Aug 23
A semiconductor device includes a junction field effect transistor (JFET) device.
Daping Fu, Yanjie Lian
Filed: 16 Feb 23
Utility
Charge Pump with Improved Light-load Efficiency and Control Method Thereof
17 Aug 23
A charge pump comprises two bridge arms coupled in parallel, two capacitors, and a control circuit.
Zhenya Zhang, Lei Du, Rui Wang, Shanglin Xu, Yueying Du
Filed: 28 Apr 23
Utility
Driving Circuit for Motor Systems and Control Method Thereof
17 Aug 23
A driving circuit for a motor has a multiplexer, a current polarity detection circuit, a first comparison circuit, a reverse current control circuit, a first bridge circuit, and a second bridge circuit.
Hongqiang Qin, Qiming Zhao
Filed: 19 Dec 22
Utility
Isolated switching converter with secondary side modulation and control method thereof
8 Aug 23
A controller of an isolated switching converter having a primary and secondary switch, the controller includes a valley detection circuit for providing a valley pulse signal in response to valleys of a resonant voltage, a pulse frequency modulation circuit for providing a pulse frequency modulation signal based on a feedback signal indicative of an output voltage, a primary on enable circuit for providing a primary on enable signal based on the pulse frequency modulation signal and valley pulse signal, a secondary logic circuit for generating a secondary control signal to control the secondary switch based on a primary off detection signal, a zero cross detection signal and the primary on enable signal, and a primary logic circuit for generating a primary control signal to control the primary switch based on a synchronous signal electrically isolated from the primary on enable signal.
Hui Li, Siran Wang, Lin Feng
Filed: 9 Dec 21
Utility
Power supply circuit for switching mode power supply and control method thereof
1 Aug 23
A power supply circuit for a switching mode power supply, having: a charging capacitor coupled to an auxiliary winding; a power supply diode coupled to a power supply capacitor, wherein the charging capacitor has a connecting terminal coupled to the power supply diode, and the charging capacitor and the power supply diode are serially coupled between the auxiliary winding of the switching mode power supply and the power supply capacitor; and a power supply switch coupled between the connecting terminal and a primary ground of the switching mode power supply.
Xuefeng Chen
Filed: 6 Jun 22
Utility
Voltage Converter and a Power Supply Control Circuit Thereof
27 Jul 23
A power supply control circuit for controlling a charging process of a power supply capacitor to produce a power supply voltage to power a power control chip is disclosed.
Hui Li, Siran Wang
Filed: 7 Dec 22
Utility
Switching converter with quasi-resonant control and control method thereof
25 Jul 23
A controller of a switching converter includes an error amplifying circuit, a first comparison circuit, a valley detection circuit, a valley selection circuit and a frequency control circuit.
Hui Li, Siran Wang
Filed: 9 Dec 21
Utility
Switch Control Circuit and Power Converter Comprising the Same
20 Jul 23
A power converter includes a switch control circuit for driving a high side switch of the power converter comprising the high side switch and a low side switch connected in series.
Yuedong Chen, Junlin Qian
Filed: 20 Dec 22
Utility
Control Circuit for a Resonant Circuit and the Method Thereof
13 Jul 23
A control circuit for a resonant circuit includes a resonant current detecting circuit, a current adjustment circuit and an on-time control circuit.
Siran Wang, Pengfei Liu, Yuzhou Zhang
Filed: 15 Mar 23
Utility
Preprocessing Circuit for Comparators and Preprocessing Method Thereof
6 Jul 23
A preprocessing circuit for a comparator has a high voltage selection circuit, a first constant voltage circuit, a second constant voltage circuit, a first transistor, and a second transistor.
Changxian Zhong
Filed: 24 Feb 23
Utility
Switching Power Supply Circuit with Synchronous Rectification and Associated Control Circuit and Control Method
6 Jul 23
A method to control a synchronous rectifier (SR) switch in a switching power supply circuit having an energy storage component coupled to the SR switch, the method is: generating a turning-ON control signal by comparing a drain-source sensing voltage of the SR switch with a turn ON threshold voltage; limiting an ON-time of the SR switch at least not less than a minimum on-time when the turning-ON control signal is asserted and an indicium signal having a first level indicating a fast mode; and removing the minimum on-time limitation to the SR switch and turning OFF the SR switch responsive to the drain-source sensing voltage of the SR switch exceeding a turn OFF threshold voltage when the turning-ON control signal is asserted and the indicium signal having a second level indicating a slow mode.
Lei Miao, Siran Wang
Filed: 13 Oct 22
Utility
Interleaved switching converter with quasi-resonant control and control method thereof
4 Jul 23
A control circuit and control method for an interleaved switching converter having a first and second interleaved voltage regulating circuit.
Zilin Fan, Guangzhuo Li, Siran Wang
Filed: 14 Sep 21
Utility
Control Circuit with Energy Regulation for Voltage Regulators and Control Method Thereof
29 Jun 23
A control circuit for a voltage regulator has an energy regulation circuit and a switching control circuit.
Wangmiao Hu, Fangyu Zhang, Lijie Jiang, Chao Liu, Chiahsin Chang, Jinghai Zhou
Filed: 17 Feb 23
Utility
Bi-directional Voltage Converter for High Power Applications
29 Jun 23
A bi-directional voltage converter having a first switch, a second switch, an inductor, a third switch, a fourth switch and a fifth switch connected in parallel with the third switch.
Rui Wang
Filed: 7 Dec 22
Utility
Input-parallel output-series multi-converter switching power supply
27 Jun 23
A multi-converter switching power supply includes a first switching converter with a first output capacitor, a second switching converter with a second output capacitor, a bypass switch coupled across the second output capacitor, and a bypass control circuit for controlling the bypass switch.
Siran Wang
Filed: 12 Nov 21
Utility
Control Circuit for a Totem Pole Power Factor Correction Circuit and the Method Thereof
25 May 23
A totem pole PFC (Power Factor Correction) circuit, having: a first switch, a second switch and a control circuit.
Guangzhuo Li, Pengfei Liu, Siran Wang
Filed: 14 Nov 22
Utility
Control Circuit for DC-DC Converters with Current Limit and Control Method Thereof
4 May 23
A control circuit for a DC-DC converter has an over-current comparison circuit, an adaptive voltage position (AVP) control circuit and a switching control circuit.
Wangmiao Hu, Lijie Jiang, Fangyu Zhang
Filed: 19 Oct 22