Patents by Inventor Christian Giassner

Christian Giassner 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).

  • Apparatus and method for digitally controlled buck-boost switching regulator
    Patent number: 8305061
    Abstract: A buck/boost regulator controller is provided. The buck-boost regulator controller controls four switches in an H-bridge configuration to control voltage regulation. The buck/boost regulator controller includes a digital error amplifier and buck-boost control logic. The digital error amplifier provides a multi-bit digital error voltage signal that is based on the difference between the output voltage and the desired output voltage. The buck-boost control logic controls the opening and closing of the four switches in the H-bridge based, in part, on the multi-bit digital error voltage signal.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: November 6, 2012
    Assignee: National Semiconductor Corporation
    Inventors: Jianhui Zhang, Martin Embacher, Frank Trautmann, Christian Giassner