Patents by Inventor Devarahandi Indika Mahaesh de Silva

Devarahandi Indika Mahaesh de Silva 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).

  • Switch mode power supply controllers
    Patent number: 7551460
    Abstract: This invention relates to switch mode power supply (SMPS) controllers employing primary side sensing. We describe an (SMPS) controller which uses an area correlator to compare an area under a feedback signal waveform between a start point defined by said first timing signal and an end point defined by said second timing signal with a reference area. An output of the area correlator provides an error signal for regulating the SMPS output.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: June 23, 2009
    Assignee: Cambridge Semiconductor Limited
    Inventors: Vinod A. Lalithambika, Devarahandi Indika Mahaesh de Silva, Jayaraman Kumar, Gehan Amaratunga