Patents by Inventor Mark Muenzer

Mark Muenzer 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).

  • Method and circuit arrangement for limiting an overvoltage
    Patent number: 7315439
    Abstract: In order to limit an overvoltage at a parallel circuit of IGBT (3) and freewheeling diode (7), an undesirable current spike is used to switch on the intrinsically turned-off IGBT (3?) during the presence of the current spike precisely to an extent such that a current which counteracts the overvoltage arises in the IGBT/freewheeling diode pair. The oppositely acting current reduces the current gradient in leakage inductances (L?) and reduces the undesirable induced overvoltages.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: January 1, 2008
    Assignee: EUPEC Europaeische Gesellschaft fur Leistungshalbleiter mbH
    Inventors: Mark Muenzer, Reinhold Bayerer, Peter Kanschat
  • Method and circuit arrangement for limiting an overvoltage
    Publication number: 20040169975
    Abstract: In order to limit an overvoltage at a parallel circuit of IGBT (3) and freewheeling diode (7), an undesirable current spike is used to switch on the intrinsically turned-off IGBT (3′) during the presence of the current spike precisely to an extent such that a current which counteracts the overvoltage arises in the IGBT/freewheeling diode pair. The oppositely acting current reduces the current gradient in leakage inductances (L&sgr;) and reduces the undesirable induced overvoltages.
    Type: Application
    Filed: March 10, 2004
    Publication date: September 2, 2004
    Inventors: Mark Muenzer, Reinhold Bayerer, Peter Kanschat