Patents by Inventor Chia-Kun Wu

Chia-Kun Wu 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).

  • Smart compensation for buck converters in discontinuous conduction mode
    Patent number: 12301114
    Abstract: A buck converter includes a high-side N-FET, a low-side N-FET, a P-FET, a between a gate terminal and a source terminal of the P-FET, aa capacitor, and a FET driver. The FET driver operates in a selectable one of a continuous current mode and a discontinuous current mode. In a first phase of the discontinuous current mode, a gate voltage on the gate terminal the N-FET equalizes to a source voltage on the source terminal of the N-FET to turn on the first N-FET. A high output voltage on a high-side output of the FET driver is high enough to overcome a threshold voltage of a body diode of the first P-FET to provide the high output voltage minus a threshold voltage to the gate terminal of the high-side P-FET to turn on the high-side P-FET.
    Type: Grant
    Filed: October 25, 2022
    Date of Patent: May 13, 2025
    Assignee: Dell Products L.P.
    Inventors: Chia-Kun Wu, Shao-Suz Ho, Wen-Yung Chang
  • SMART COMPENSATION FOR BUCK CONVERTERS IN DISCONTINUOUS CONDUCTION MODE
    Publication number: 20240235396
    Abstract: A buck converter includes a high-side N-FET, a low-side N-FET, a P-FET, a between a gate terminal and a source terminal of the P-FET, aa capacitor, and a FET driver. The FET driver operates in a selectable one of a continuous current mode and a discontinuous current mode. In a first phase of the discontinuous current mode, a gate voltage on the gate terminal the N-FET equalizes to a source voltage on the source terminal of the N-FET to turn on the first N-FET. A high output voltage on a high-side output of the FET driver is high enough to overcome a threshold voltage of a body diode of the first P-FET to provide the high output voltage minus a threshold voltage to the gate terminal of the high-side P-FET to turn on the high-side P-FET.
    Type: Application
    Filed: October 25, 2022
    Publication date: July 11, 2024
    Inventors: Chia-Kun Wu, Shao-Suz Ho, Wen-Yung Chang
  • SMART COMPENSATION FOR BUCK CONVERTERS IN DISCONTINUOUS CONDUCTION MODE
    Publication number: 20240136929
    Abstract: A buck converter includes a high-side N-FET, a low-side N-FET, a P-FET, a between a gate terminal and a source terminal of the P-FET, aa capacitor, and a FET driver. The FET driver operates in a selectable one of a continuous current mode and a discontinuous current mode. In a first phase of the discontinuous current mode, a gate voltage on the gate terminal the N-FET equalizes to a source voltage on the source terminal of the N-FET to turn on the first N-FET. A high output voltage on a high-side output of the FET driver is high enough to overcome a threshold voltage of a body diode of the first P-FET to provide the high output voltage minus a threshold voltage to the gate terminal of the high-side P-FET to turn on the high-side P-FET.
    Type: Application
    Filed: October 24, 2022
    Publication date: April 25, 2024
    Inventors: Chia-Kun Wu, Shao-Suz Ho, Wen-Yung Chang