Patents by Inventor Gary L. Wakeman

Gary L. Wakeman 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).

  • METHODS AND APPARATUS FOR HIGHER-ORDER CORRECTION OF A BANDGAP VOLTAGE REFERENCE
    Publication number: 20100156384
    Abstract: Methods and apparatus for higher-order correction of bandgap voltage references are disclosed. An example bandgap voltage reference circuit disclosed herein comprises a bandgap voltage generation circuit comprising a first resistor, the bandgap voltage generation circuit configured to generate a proportional-to-absolute-temperature current to drive the first resistor to produce a first voltage, the first voltage contributing to an output bandgap voltage, and a first correction circuit electrically coupled to the first resistor and configured to provide a first correction current, the first correction circuit comprising a first nonlinear device configured to generate the first correction current only within a first temperature range, the first correction current decreasing with increasing temperature, the first correction current to drive the first resistor to increase the first voltage only within the first temperature range.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Inventors: Erhan Ozalevli, Luthuli E. Dake, Gregory Romas, Gary L. Wakeman
  • Methods and apparatus for higher-order correction of a bandgap voltage reference
    Patent number: 7728575
    Abstract: Methods and apparatus for higher-order correction of bandgap voltage references are disclosed. An example bandgap voltage reference circuit disclosed herein comprises a bandgap voltage generation circuit comprising a first resistor, the bandgap voltage generation circuit configured to generate a proportional-to-absolute-temperature current to drive the first resistor to produce a first voltage, the first voltage contributing to an output bandgap voltage, and a first correction circuit electrically coupled to the first resistor and configured to provide a first correction current, the first correction circuit comprising a first nonlinear device configured to generate the first correction current only within a first temperature range, the first correction current decreasing with increasing temperature, the first correction current to drive the first resistor to increase the first voltage only within the first temperature range.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: June 1, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Erhan Ozalevli, Luthuli E. Dake, Gregory Romas, Gary L. Wakeman