Patents by Inventor Veter Chang

Veter Chang 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).

  • Variable on-time control method for high light-load efficiency, small output voltage ripple, and audible-noise-free operation
    Patent number: 8344703
    Abstract: An apparatus and method of controlling power converters is achieved that produces high light-load efficiency and reduced output voltage ripple while maintaining quiet operation that is free from audible noise. The inventive method includes a variable on-time control circuit that is applicable to a wide variety of switching mode converters, including, but not limited to, boost converters, buck converters, buck-boost converters, single-ended primary inductor (SEPIC) converters, and other converter topologies, both isolated and non-isolated.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: January 1, 2013
    Assignee: Semtech Corporation
    Inventors: Chin Chang, Veter Chang
  • VARIABLE ON-TIME CONTROL METHOD FOR HIGH LIGHT-LOAD EFFICIENCY, SMALL OUTPUT VOLTAGE RIPPLE, AND AUDIBLE-NOISE-FREE OPERATION
    Publication number: 20110215771
    Abstract: An apparatus and method of controlling power converters is achieved that produces high light-load efficiency and reduced output voltage ripple while maintaining quiet operation that is free from audible noise. The inventive method includes a variable on-time control circuit that is applicable to a wide variety of switching mode converters, including, but not limited to, boost converters, buck converters, buck-boost converters, single-ended primary inductor (SEPIC) converters, and other converter topologies, both isolated and non-isolated.
    Type: Application
    Filed: March 2, 2010
    Publication date: September 8, 2011
    Inventors: Chin CHANG, Veter CHANG