Patents by Inventor Tsung-Kuan Lee

Tsung-Kuan Lee 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).

  • Bootstrap capacitor detecting circuit and bootstrap DC-DC converter thereof
    Patent number: 8901912
    Abstract: A bootstrap capacitor detecting circuit includes a current source, for providing a discharging current; a first switch, for conducting connection between a system voltage and a bootstrap voltage node according to a power-on-reset signal, to charge the bootstrap voltage node; a second switch, for conducting connection between a current source and the bootstrap voltage node according to the power-on-reset signal, to discharge the bootstrap voltage node; and a detecting unit, for determining whether a bootstrap capacitor is connected normally according to a bootstrap voltage of the bootstrap voltage node after the current source discharges the bootstrap voltage node.
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: December 2, 2014
    Assignee: Anpec Electronics Corporation
    Inventors: Tsung-Kuan Lee, Chih-Yuan Chen
  • Bootstrap Capacitor Detecting Circuit and Bootstrap DC-DC Converter Thereof
    Publication number: 20140152275
    Abstract: A bootstrap capacitor detecting circuit includes a current source, for providing a discharging current; a first switch, for conducting connection between a system voltage and a bootstrap voltage node according to a power-on-reset signal, to charge the bootstrap voltage node; a second switch, for conducting connection between a current source and the bootstrap voltage node according to the power-on-reset signal, to discharge the bootstrap voltage node; and a detecting unit, for determining whether a bootstrap capacitor is connected normally according to a bootstrap voltage of the bootstrap voltage node after the current source discharges the bootstrap voltage node.
    Type: Application
    Filed: January 21, 2013
    Publication date: June 5, 2014
    Applicant: Anpec Electronics Corporation
    Inventors: Tsung-Kuan Lee, Chih-Yuan Chen