Patents by Inventor Francis C. Yu

Francis C. Yu 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).

  • Current detection and emulation circuit, and method thereof
    Patent number: 9184651
    Abstract: A current detection circuit for detecting a current in a SMPS which has a first switch and a second switch; a current sensing circuit sensing a second switch current flowing through the second switch and providing a current sensing signal; and a current emulation circuit which generates a first current according to the current sensing signal and generate a second current according to the first current source, and the current emulation circuit further providing a current emulation signal based on the first current source and the second current source; wherein a current detection signal during a first period is proportional to the current emulation signal, and the current detection signal during a second period is proportional to the current sensing signal.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 10, 2015
    Assignee: Monolithic Power Systems, Inc.
    Inventors: James H. Nguyen, Francis C. Yu
  • CURRENT DETECTION AND EMULATION CIRCUIT, AND METHOD THEREOF
    Publication number: 20150222171
    Abstract: A current detection circuit for detecting a current in a SMPS which has a first switch and a second switch; a current sensing circuit sensing a second switch current flowing through the second switch and providing a current sensing signal; and a current emulation circuit which generates a first current according to the current sensing signal and generate a second current according to the first current source, and the current emulation circuit further providing a current emulation signal based on the first current source and the second current source; wherein a current detection signal during a first period is proportional to the current emulation signal, and the current detection signal during a second period is proportional to the current sensing signal.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 6, 2015
    Applicant: MONOLITHIC POWER SYSTEMS, INC.
    Inventors: James H. Nguyen, Francis C. Yu