239 patents
Page 4 of 12
Utility
Flexible dimming circuit and a method thereof
6 Dec 22
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: 3 Jun 20
Utility
Switching Converter Compatible with Super Capacitor and Control Circuit Thereof
17 Nov 22
A control circuit used in a switching converter having a switch and an inductor.
Yong Zhou
Filed: 28 Apr 22
Utility
Circuit for Controlling a Switching Mode Power Supply and the Method Thereof
17 Nov 22
A circuit for controlling a switching mode power supply having a power switch, having: a feedback pulse circuit, configured to receive a feedback signal, and to provide a feedback pulse signal; a load determining circuit, configured to receive the feedback signal, and to provide a load determining signal; a light load pulse circuit, configured to receive the load determining signal and a frequency regulating signal, and to provide a light load pulse signal; a frequency regulating circuit, configured to receive the load determining signal, the light load pulse signal and a normal load pulse signal, and to provide the frequency regulating signal; and a selecting circuit, configured to receive the load determining signal, the feedback pulse signal and the light load pulse signal, and to provide an on control signal and the normal load pulse signal; wherein the on control signal controls an on operation of the power switch.
Hui Li, Guangzhuo Li
Filed: 2 May 22
Utility
Power management circuit with over-current protection and over-current protection method thereof
15 Nov 22
A power management circuit has a power input terminal coupled to a power supply or a load, a power terminal configured to provide an output voltage, and a battery terminal coupled to a battery.
Haigang Cao, Shengyong Yi
Filed: 18 Nov 21
Utility
X capacitor discharging circuit and method thereof
15 Nov 22
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
Battery charging circuit, control circuit and associated control method
1 Nov 22
A battery charging circuit providing a charging current to a battery via a charging transistor.
Junchang Chang
Filed: 6 Dec 19
Utility
Isolated switching converter with high feedback accuracy and control method
1 Nov 22
An isolated switching converter has a primary switch and a control circuit.
Hui Li, Siran Wang
Filed: 11 Aug 21
Utility
Flip Chip Package Unit and Associated Packaging Method
27 Oct 22
A flip chip package unit and associated packaging method.
Yingjiang Pu, Hunt Hang Jiang, Xiuhong Guo
Filed: 11 Apr 22
Utility
Flip Chip Package Unit and Associated Packaging Method
27 Oct 22
A flip chip package unit and associated packaging method.
Yingjiang Pu, Hunt Hang Jiang, Xiuhong Guo
Filed: 4 Apr 22
Utility
Switching Regulator with THD and PF Compensation, the Control Circuit and the Method Thereof
20 Oct 22
A switching regulator converts an AC input voltage into an output voltage, to power a load.
Hao Wang, Zhiheng Hu
Filed: 11 Apr 22
Utility
Daisy-chain battery cells system with differential communication interfaces
18 Oct 22
A daisy-chain battery cells system having a plurality of differential communication interfaces {F(i), i=1, . . . , N} respectively coupled to a plurality of voltage measuring modules {S(i), i=1, . . . , N} for a plurality of battery cells {C(i), i=1, . . . , N}.
Min Xu, Kai Chen, Xiaohong Li
Filed: 11 Dec 19
Utility
Switching mode power supply with adaptive threshold setting
18 Oct 22
A switching mode power supply with an adaptive setting of a threshold valley voltage.
Yuedong Chen
Filed: 22 Jun 21
Utility
Switch Mode Power Supply with Improved Transient Performance and Control Circuit Thereof
13 Oct 22
A control circuit used in a switch mode power supply is provided.
Shanglin Xu
Filed: 25 Mar 22
Utility
Bi-directional Buffer Having a Low Bias Voltage and a Fast Transient Response
13 Oct 22
A bi-directional buffer for applications using in an I2C or SMBUS or other bus systems.
Yong Zhou
Filed: 22 Mar 22
Utility
Step-up switching converter and control circuit and method thereof
11 Oct 22
A control circuit and control method for controlling a step-up switching converter.
Lei Li
Filed: 24 May 21
Utility
Integrated Circuit Unit and Wafer with Integrated Circuit Units
6 Oct 22
Integrated circuit (“IC”) unit and a wafer for fabricating IC units.
Liwei Hou, Suwei Wang, Heng Li, Ze-Qiang Yao, Junjian Zhao
Filed: 29 Mar 22
Utility
Peak Detecting Circuiit for an Input Voltage and Associated Method
22 Sep 22
A method for detecting a variation of input voltage.
Yuedong Chen, Junhong Li, Jiangwei Cheng
Filed: 16 Mar 22
Utility
Charge Systems with a Bi-directional Linear Charger and Associated Operating Methods
15 Sep 22
A charge system having a bi-directional linear charger is provided, The charge system is used to provide interrupted power to a load, The charger system has an input interface for receiving a supply voltage, an output interface for outputting a system voltage to the load, a DC/DC voltage regulator coupled between the input interface and the output interface, a charging electrical pathway from an output terminal of the DC/DC voltage regulator to the battery through the linear charger, and a discharge electrical pathway from the battery to the output interface through the linear charger.
Min Xu
Filed: 1 Mar 22
Utility
Adaptive Inductor DCR Current Sensing Circuit In a Switching Converter and Associated Method
15 Sep 22
A DCR current sensing circuit used in a switching converter having a power switch and an inductor.
Chun Shih Huang, Chia Chun Hsiao
Filed: 4 Mar 22
Utility
Switching regulator with improved load regulation and the method thereof
13 Sep 22
A switching regulator with improved load regulation is discussed.
Lei Li
Filed: 31 Aug 20