Patents by Inventor YU-KAI SHEN

YU-KAI SHEN 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).

  • Power supply device
    Patent number: 11586234
    Abstract: The application discloses a power supply circuit and a power supply device. A drain of a first N-type metal-oxide-semiconductor field-effect transistor (MOSFET) receives a first input voltage. A filter is coupled to a source of the first N-type MOSFET and is configured to output an output voltage. A non-inverting input terminal of an operational amplifier is coupled to a ground terminal through a first capacitor. A control circuit is coupled to an inverting input terminal of the operational amplifier. One terminal of a switch is coupled to a gate of the first N-type MOSFET, and the other terminal is switchably coupled to the control circuit or an output terminal of the operational amplifier, so that the gate of the first N-type MOSFET is switched to be coupled to the control circuit or the output terminal of the operational amplifier.
    Type: Grant
    Filed: May 6, 2021
    Date of Patent: February 21, 2023
    Assignee: PEGATRON CORPORATION
    Inventors: Hsiao-Wei Sung, Chun-Wei Ko, Yu-Kai Shen, Chih-Wei Huang
  • POWER SUPPLY CIRCUIT AND POWER SUPPLY DEVICE
    Publication number: 20210397208
    Abstract: The application discloses a power supply circuit and a power supply device. A drain of a first N-type metal-oxide-semiconductor field-effect transistor (MOSFET) receives a first input voltage. A filter is coupled to a source of the first N-type MOSFET and is configured to output an output voltage. A non-inverting input terminal of an operational amplifier is coupled to a ground terminal through a first capacitor. A control circuit is coupled to an inverting input terminal of the operational amplifier. One terminal of a switch is coupled to a gate of the first N-type MOSFET, and the other terminal is switchably coupled to the control circuit or an output terminal of the operational amplifier, so that the gate of the first N-type MOSFET is switched to be coupled to the control circuit or the output terminal of the operational amplifier.
    Type: Application
    Filed: May 6, 2021
    Publication date: December 23, 2021
    Inventors: HSIAO-WEI SUNG, CHUN-WEI KO, YU-KAI SHEN, CHIH-WEI HUANG