Patents by Inventor Mu-Chih Lin

Mu-Chih Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control method in use of active-clamp flyback power converter
    Patent number: 11050351
    Abstract: A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 29, 2021
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Mu-Chih Lin, Chun-Teh Chen, Ren-Yi Chen, Ming-Ying Kuo, Jeng-Cheng Liu
  • CONTROL METHOD IN USE OF ACTIVE-CLAMP FLYBACK POWER CONVERTER
    Publication number: 20210091672
    Abstract: A control method is introduced to operate an ACF power converter under a non-complimentary mode. A high-side switch is turned ON at least twice within a switching cycle of a low-side switch, to provide at least two high-side ON times. One of the high-side ON times follows the end of demagnetization time of a transformer in the ACF power converter, and the other follows the end of the blanking time that controls the maximum switching frequency of the low-side switch.
    Type: Application
    Filed: May 13, 2020
    Publication date: March 25, 2021
    Inventors: Mu-Chih LIN, Chun-Teh CHEN, Ren-Yi CHEN, Ming-Ying KUO, Jeng-Cheng LIU
  • System for Dynamically Controlling an Operation of Over Voltage Protection and a Voltage Converter
    Publication number: 20180123339
    Abstract: A system for dynamically controlling over voltage protection includes a voltage detection circuit, an over voltage protection reference signal output circuit, and an over voltage control signal output circuit. The voltage detection circuit is used for detecting a voltage and outputting a sampled voltage according to the voltage. The over voltage protection reference signal output circuit is coupled to the voltage protection circuit for generating an over voltage protection reference signal according to the sampled voltage and a voltage feedback signal. The over voltage control signal output circuit is coupled to the voltage detection circuit and the over voltage protection reference signal output circuit for generating an over voltage control signal according to the sampled voltage and the over voltage protection reference signal.
    Type: Application
    Filed: January 8, 2017
    Publication date: May 3, 2018
    Inventors: Mu-Chih Lin, Ming-Ying Kuo
  • System for dynamically controlling an operation of over voltage protection and a voltage converter
    Patent number: 9960594
    Abstract: A system for dynamically controlling over voltage protection includes a voltage detection circuit, an over voltage protection reference signal output circuit, and an over voltage control signal output circuit. The voltage detection circuit is used for detecting a voltage and outputting a sampled voltage according to the voltage. The over voltage protection reference signal output circuit is coupled to the voltage protection circuit for generating an over voltage protection reference signal according to the sampled voltage and a voltage feedback signal. The over voltage control signal output circuit is coupled to the voltage detection circuit and the over voltage protection reference signal output circuit for generating an over voltage control signal according to the sampled voltage and the over voltage protection reference signal.
    Type: Grant
    Filed: January 8, 2017
    Date of Patent: May 1, 2018
    Assignee: WELTREND SEMICONDUCTOR INC.
    Inventors: Mu-Chih Lin, Ming-Ying Kuo