129 patents
Page 5 of 7
Utility
Driving Circuit with Emi Reduction
21 Oct 21
A driving circuit providing a driving signal at a driving terminal to drive a power switch.
Shanglin Xu
Filed: 15 Apr 21
Utility
Zero Current Controlled Dimming Circuit and a Method Thereof
23 Sep 21
A control circuit of a zero current controlled dimming circuit having a high side power switch, a low side power switch and an inductor, having: an error circuit, providing a compensation signal based on a reference signal and a current sense signal indicative of an output current; a compensation circuit, providing a compensation off time signal based on the compensation signal and a peak value sample and hold signal indicative of a peak value of an inductor current; and a control signal generating circuit, providing a low side switch control signal to control the low side power switch based on the compensation off time signal, wherein after the inductor current decreases to zero, the low side power switch maintains on for a compensation off time period determined by the compensation off time signal.
Hui Li, Siran Wang
Filed: 23 Feb 21
Utility
Multiphase Switching Converters with Daisy Chain Configuration
16 Sep 21
A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain.
Suhua Luo
Filed: 24 Feb 21
Utility
Multiphase Switching Converters with Daisy Chain Configuration and Associated Phase Shedding Control Method
16 Sep 21
A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain.
Suhua Luo
Filed: 24 Feb 21
Utility
Multiphase Switching Converters with Daisy Chain Configuration and Associated Fault Protection Method
16 Sep 21
A multiphase switching converter has a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain.
Suhua Luo
Filed: 24 Feb 21
Utility
Switching Converter with Voltage and Current Dual-loop Control and Control Method Thereof
1 Jul 21
Voltage and current dual-loop control circuit for controlling a switching converter and associated control method.
Lei Li
Filed: 17 Dec 20
Utility
Power Converters Including Bias Voltage Supply Circuit and Method of Supplying Bias Supply Voltage
17 Jun 21
A power converter includes a first and a second transformers having different auxiliary winding voltage levels.
Siran Wang
Filed: 20 Nov 20
Utility
Circuit for Driving Synchronous Rectifier Device
10 Jun 21
A driving circuit for driving a synchronous rectifier device.
Jiayou Ye, Yuedong Chen, Hui Li
Filed: 7 Dec 20
Utility
Switching Power Supply Circuit with Synchronous Rectification and Associated Control Circuit and Control Method
10 Jun 21
A switching power supply circuit with synchronous rectification has an energy storage component, a SR switch coupled to a secondary side of the energy storage component, and a secondary control circuit.
Lei Miao, Siran Wang
Filed: 20 Nov 20
Utility
Short to Ground and Open Protecting Circuit, and Associated Protecting Method
3 Jun 21
A short to ground protecting circuit for an LED driver for providing a power supply voltage for N LED strings.
Shufa Jiang, Junxin Tan, Bo Yu
Filed: 23 Nov 20
Utility
Lateral Dmos with Integrated Schottky Diode
27 May 21
A lateral transistor having a well region, a body region, a source region, a drain region, a gate structure and a trenched Schottky barrier structure.
Tao Hong, Daping Fu
Filed: 17 Nov 20
Utility
Adaptive Dimming Circuit and a Method Thereof
27 May 21
A dimming module having: a calculating circuit, configured to receive a preset current duty cycle reference signal, a preset current magnitude reference signal and a feedback voltage of an associated light-emitting device string, and to provide a current duty cycle reference signal and a current magnitude reference signal; and a current regulating circuit, configured to receive the feedback voltage of the associated light-emitting device string, the current duty cycle reference signal and the current magnitude reference signal, and to control a duty cycle and a magnitude of the current flowing through the associated light-emitting device string; wherein the current magnitude reference signal provided to the light-emitting device string with the minimum feedback voltage is lower than the preset current magnitude reference signal, while the current magnitude reference signal provided to each other light-emitting device string is higher than the preset current magnitude reference signal.
Bo Yu
Filed: 16 Nov 20
Utility
Controller for Light-emitting Element Driving Device, Dimming Method Thereof and Light-emitting Element Driving Device
4 Mar 21
A light-emitting element driving device and controller and dimming method for the light-emitting element driving device.
Huafei Ding, Changxian Zhong
Filed: 21 Aug 20
Utility
Switching Regulator with Improved Load Regulation and the Method Thereof
4 Mar 21
A switching regulator with improved load regulation is discussed.
Lei Li
Filed: 31 Aug 20
Utility
Turn-off Protection Circuit for a Switch Unit and Associated Turn-off Protection Method
18 Feb 21
A turn-off protection circuit and a turn-off protection method for a switch unit.
Jian Zhang
Filed: 12 Aug 20
Utility
Switching Mode Power Supply Providing an Over Current Protection with Anti-surge Function
4 Feb 21
A switching mode power supply preventing false triggering of an over current protection due to a surge pulse.
Yuedong Chen, Yiqing Jin, Zhiheng Hu
Filed: 30 Jul 20
Utility
X Capacitor Discharging Circuit and Method Thereof
4 Feb 21
A discharge circuit for an X capacitor has a first voltage detection circuit providing a first indicating signal based on a voltage across two input terminals of a switching converter to indicate whether the two input terminals are connected to an AC power source, and a discharge module starting a discharge operation on the X capacitor based on first indicating signal, and the discharge operation discharges the X capacitor during a first time period, and stops discharging the X capacitor and compares a sampled signal with the voltage across the two input terminals during a following second time period.
Yuedong Chen
Filed: 13 Jul 20
Utility
Phase Shedding Control Method Used In Multiphase Switching Converters with Daisy Chain Configuration
28 Jan 21
A multiphase switching converter with automatic phase shedding control, wherein the multiphase switching converter includes a plurality of switching circuits coupled in parallel, and a plurality of control circuits configured in a daisy chain and respectively configured for driving a corresponding one of the plurality of switching circuits.
Lijie Jiang, Yongheng Sun
Filed: 21 Jul 20
Utility
Fault Protection Method Used In Multiphase Switching Converters with Daisy Chain Configuration
28 Jan 21
A fault protection method used in a multiphase switching converter which includes a plurality of switching circuits coupled in parallel and a plurality of control circuits configured in a daisy chain.
Lijie Jiang, Yongheng Sun
Filed: 21 Jul 20
Utility
Switching Mode Power Supply Preventing False Triggering of a Switch
28 Jan 21
A switching mode power supply preventing a first switch from being falsely triggered.
Yuedong Chen
Filed: 14 Jul 20