Patents by Inventor Po-Chin FAN

Po-Chin FAN 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).

  • Audio-skipping of a constant on-time power converter
    Patent number: 8664929
    Abstract: When the switching frequency of a constant on-time power converter decreases to a threshold, the power converter is switched from the original operation of triggering a constant on-time of a high-side switch responsive to the output voltage of the power converter reaching a valley point to the operation of triggering a constant off-time of the high-side switch responsive to the output voltage reaching a peak point, to thereby prevent the power converter from operating in an audio frequency range.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: March 4, 2014
    Assignee: Ricktek Technology Corp.
    Inventors: Po-Chin Fan, Kuo-Ping Liu
  • AUDIO-SKIPPING OF A CONSTANT ON-TIME POWER CONVERTER
    Publication number: 20120133348
    Abstract: When the switching frequency of a constant on-time power converter decreases to a threshold, the power converter is switched from the original operation of triggering a constant on-time of a high-side switch responsive to the output voltage of the power converter reaching a valley point to the operation of triggering a constant off-time of the high-side switch responsive to the output voltage reaching a peak point, to thereby prevent the power converter from operating in an audio frequency range.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 31, 2012
    Applicant: RICHTEK TECHNOLOGY CORP.
    Inventors: Po-Chin FAN, Kuo-Ping LIU