239 patents
Page 9 of 12
Utility
Motor control system and associated method to control motor speed
30 Mar 21
A motor control system has a computing device and a motor controller.
Qiming Zhao, Long Li
Filed: 16 Aug 19
Utility
Battery charging circuit with improved system stability and control method thereof
16 Mar 21
A control method for controlling a battery charging circuit having at least one switch, includes: generating a first difference signal based on a charging current feedback signal and a charging current reference signal; generating a second difference signal based on a battery voltage feedback signal and a battery voltage reference signal; based on a battery voltage, selecting one of the first and second difference signals, and a ground voltage as a third difference signal; generating a bias signal by proportionally integrating the third difference signal; comparing the sum of a system voltage feedback signal and a ramp signal with the sum of the bias signal and a system voltage reference signal and generating a comparison signal; generating a control signal to control the at least one switch of based on the comparison signal and a constant time period control signal.
Suhua Luo, Pengpeng Ma
Filed: 20 Dec 18
Utility
Switching power supply circuit with synchronous rectifier and associated control circuit and control method
16 Mar 21
A switching power supply circuit has an energy storage component, a synchronous rectifier switch and a synchronous rectifier control circuit.
Hui Li, Siran Wang, Lei Miao
Filed: 18 Dec 19
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
Control circuit having power limit for an AC-DC converter and integrated circuits thereof
16 Feb 21
A control circuit having power limit for controlling an AC-DC voltage converter.
Yuedong Chen, Haishi Wang, Lin Feng
Filed: 19 Dec 19
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
Utility
Sequence Assignment Method Used In Multiphase Switching Converters with Daisy Chain Configuration
28 Jan 21
A sequence assignment method used in multiphase switching converters with daisy chain configuration, 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 sharing a phase control signal.
Lijie Jiang, Yongheng Sun
Filed: 21 Jul 20
Utility
Lateral Dmos Having Reduced Lateral Size
21 Jan 21
A lateral DMOS having a well region, a source region, a drain region, a first gate region and a second gate region.
Yanjie Lian, Ji-Hyoung Yoo
Filed: 7 Jul 20
Utility
Battery balancing circuit balancing voltages between battery units with a fly capacitor
28 Dec 20
A battery balancing method and circuit for balancing the voltages between battery units with a fly capacitor.
Rui Wang, Min Xu, Qiming Zhao
Filed: 9 Jul 18
Utility
Synchronous rectifier off control module and synchronous rectifying control circuit
28 Dec 20
A synchronous rectifier OFF control module and a synchronous rectifying control circuit.
Tianzhu Zhang
Filed: 24 Feb 19
Utility
Controller for a Multi-phase Converter and Fault Detection Method Thereof
23 Dec 20
A fault detection method for a multi-phase converter is: sampling currents flowing through a plurality of switching circuits to generate a plurality of current sampling signals; generating a plurality of digital current signals based on a plurality of current sampling signals; generating a plurality of on-time adjustment signals based on differences between each of the plurality of digital current signals and a reference current signal; averaging the plurality of on-time adjustment signals to generate an average adjustment signal; subtracting each of the plurality of on-time adjustment signals from the average adjustment signal to generate corresponding plurality of adjustment error signals; comparing each of the plurality of adjustment error signals with a threshold signal to generate a plurality of fault signals; and adjusting control signals of the plurality of switching circuits based on the plurality of fault signals.
Wenbin Lu, Wangmiao Hu, Lijie Jiang
Filed: 17 Jun 20
Utility
Controller for a Multi-phase Converter and Fault Detection Method Thereof
23 Dec 20
A fault detection method is sampling currents flowing through a plurality of switching circuits to generate a plurality of current sampling signals, generating a first reference signal and a second reference signal based on a predetermined reference signal and a ripple threshold signal, and generating a plurality of fault signals based on comparison results of each of the plurality of current sampling signals with the first reference signal and the second reference signal.
Wenbin Lu, Wangmiao Hu, Lijie Jiang
Filed: 17 Jun 20
Utility
Circuit for Driving Synchronous Rectifier Device
9 Dec 20
A driving circuit for driving a synchronous rectifier device.
Lin Feng, Yuedong Chen
Filed: 15 Apr 20
Utility
Flexible Dimming Circuit and a Method Thereof
9 Dec 20
A dimming circuit for dimming a current flowing through a light emitting device, having: a multi-function pin, configured to receive a dimming signal; wherein when the dimming signal is an analog voltage signal, an amplitude of the current flowing through the light emitting device is regulated based on the dimming signal; when the dimming signal is a pulse signal and a frequency of the dimming signal is in a first frequency range, a duty cycle of the current flowing through the light emitting device is regulated based on the dimming signal; and when the dimming signal is the pulse signal and the frequency of the dimming signal is in a second frequency range, the amplitude of the current flowing through the light emitting device is regulated based on the dimming signal.
Bo Yu, Bairen Liu, Junxin Tan
Filed: 2 Jun 20