Patents by Inventor Alvin Chit-Sang Chan

Alvin Chit-Sang Chan 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).

  • Programmable inductor current control for DC-DC converters
    Patent number: 7239117
    Abstract: A DC-DC converter circuit includes an inductor having an inductor current, an inductor current emulation circuit for producing an emulated inductor current, and a control circuit coupled with the emulation circuit for receiving the emulated inductor current and determining a peak inductor current for the DC-DC converter.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: July 3, 2007
    Assignee: Solomon Systech Limited
    Inventors: Cheung Fai Lee, Stephen Wai-Yan Lai, Alvin Chit-Sang Chan, David Chin-Tung Or