Patents by Inventor Charles A. Devries

Charles A. Devries 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).

  • Active gate clamp circuit for self driven synchronous rectifiers
    Patent number: 7088602
    Abstract: A DC-DC converter circuit includes a transformer with a resonate filter or snubber connected at a primary side and a switch for controlling operation of the converter. A secondary side of the transformer includes self-driven synchronous rectifiers and an output filter. Transistors are provided at the gates leads of the rectifiers and themselves are provided with a fixed voltage at their gates so as to clamp the peak voltages across to the rectifiers.
    Type: Grant
    Filed: January 25, 2001
    Date of Patent: August 8, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Robert A. Priegnitz, Charles A. Devries, Jr.
  • Active gate clamp circuit for self driven synchronous rectifiers
    Publication number: 20020097588
    Abstract: A DC-DC converter circuit includes a transformer with a resonate filter or snubber connected at a primary side and a switch for controlling operation of the converter. A secondary side of the transformer includes self-driven synchronous rectifiers and an output filter. Transistors are provided at the gates leads of the rectifiers and themselves are provided with a fixed voltage at their gates so as to clamp the peak voltages across to the rectifiers.
    Type: Application
    Filed: January 25, 2001
    Publication date: July 25, 2002
    Applicant: Texas Instruments Incorporated
    Inventors: Robert A. Priegnitz, Charles A. Devries