Patents by Inventor Mahesh Devarahandi Indika de Silva

Mahesh Devarahandi Indika 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: 7499295
    Abstract: This invention generally relates to discontinuous conduction mode switch mode power supply (SMPS) controllers employing primary side sensing. We describe an SMPS controller which integrates a feedback signal from a point determined by a target operating voltage to a peak or trough of an oscillatory or resonant portion of the feedback signal when substantially no energy is being transferred to the SMPS output. When regulation is achieved this value should be zero; the difference from zero can be used to regulate the output voltage of the SMPS.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: March 3, 2009
    Assignee: Cambridge Semiconductor Limited
    Inventors: Mahesh Devarahandi Indika de Silva, Jay Kumar, Vinod A. Lalithambika
  • Switch mode power supply controllers
    Publication number: 20080037294
    Abstract: This invention generally relates to discontinuous conduction mode switch mode power supply (SMPS) controllers employing primary side sensing. We describe an SMPS controller which integrates a feedback signal from a point determined by a target operating voltage to a peak or trough of an oscillatory or resonant portion of the feedback signal when substantially no energy is being transferred to the SMPS output. When regulation is achieved this value should be zero; the difference from zero can be used to regulate the output voltage of the SMPS.
    Type: Application
    Filed: June 7, 2007
    Publication date: February 14, 2008
    Inventors: Mahesh Devarahandi Indika de Silva, Jay Kumar, Vinod A. Lalithambika
  • Switch mode power supply controllers
    Patent number: 7248487
    Abstract: This invention generally relates to discontinuous conduction mode switch mode power supply (SMPS) controllers employing primary side sensing. We describe an SMPS controller which integrates a feedback signal from a point determined by a target operating voltage to a peak or trough of an oscillatory or resonant portion of the feedback signal when substantially no energy is being transferred to the SMPS output. When regulation is achieved this value should be zero; the difference from zero can be used to regulate the output voltage of the SMPS.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: July 24, 2007
    Assignee: Cambridge Semiconductor Limited
    Inventors: Mahesh Devarahandi Indika de Silva, Jay Kumar, Vinod A. Lalithambika