Patents by Inventor Wolfgang Friesacher

Wolfgang Friesacher 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).

  • Circuit configuration having a field-effect transistor operable at higher frequencies
    Patent number: 6858895
    Abstract: A circuit configuration for the switch-on/off control of a DMOS power transistor has at least one first gate electrode and, separate from the latter, a second gate electrode, which are capacitively coupled to one another by a capacitance distributed over the field-effect transistor and which can be driven via separate external gate electrode terminals. The circuit configuration has two individual driver circuits and a generating circuit in order to feed a first drive signal to the first gate electrode and a second drive signal to the second gate electrode, the second drive signal being delayed with respect to the first drive signal.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: February 22, 2005
    Assignee: Infineon Technologies AG
    Inventors: Martin Feldtkeller, Walter Rieger, Wolfgang Friesacher
  • Circuit configuration and method for the switch-on/off control of a field-effect transistor
    Publication number: 20030173619
    Abstract: A circuit configuration for the switch-on/off control of a DMOS power transistor has at least one first gate electrode and, separate from the latter, a second gate electrode, which are capacitively coupled to one another by a capacitance distributed over the field-effect transistor and which can be driven via separate external gate electrode terminals. The circuit configuration has two individual driver circuits and a generating circuit in order to feed a first drive signal to the first gate electrode and a second drive signal to the second gate electrode, the second drive signal being delayed with respect to the first drive signal.
    Type: Application
    Filed: March 17, 2003
    Publication date: September 18, 2003
    Inventors: Martin Feldtkeller, Walter Rieger, Wolfgang Friesacher