Patents by Inventor Michael Scheffer

Michael Scheffer 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).

  • Publication number: 20200273778
    Abstract: A power semiconductor arrangement includes first and second power semiconductor modules. Each power semiconductor module has a first main side and an opposing second main side. The power semiconductor modules are arranged such that a main side of the first power semiconductor module and a main side of the second power semiconductor module are facing each other. The power semiconductor arrangement further includes a cooler housing configured for direct liquid cooling of the power semiconductor modules. The cooler housing includes a fluid channel. At least one main side of the first power semiconductor module forms a sidewall of the fluid channel. A flow direction in the fluid channel along the first main side and a flow direction along the second main side of the first power semiconductor module are oriented in opposite directions.
    Type: Application
    Filed: February 20, 2020
    Publication date: August 27, 2020
    Inventors: Juergen Hoegerl, Tino Karczewski, Michael Scheffer, Christian Schweikert
  • Patent number: 9214872
    Abstract: The invention relates to a method for actuating the switching transistors of a rectifier which is provided for converting the phase voltages that are provided by a vehicle generator into a direct current voltage. Each switching transistor comprises a parasitic diode. An activation signal for initiating the conducting phase and a de-activation signal for ending the conducting phase are supplied to each control terminal of the switching transistors. A timer is started simultaneously with the provision of an activation signal and the de-activation signal is provided once a predetermined time period has passed.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: December 15, 2015
    Assignee: Infineon Technologies AG
    Inventors: Gerhard Koelle, Benno Koeppl, Michael Scheffer
  • Patent number: 8749206
    Abstract: A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 10, 2014
    Assignee: Infineon Technologies AG
    Inventors: Benno Koeppl, Michael Scheffer, Frank Auer
  • Publication number: 20140036562
    Abstract: The invention relates to a method for actuating the switching transistors of a rectifier which is provided for converting the phase voltages that are provided by a vehicle generator into a direct current voltage. Each switching transistor comprises a parasitic diode. An activation signal for initiating the conducting phase and a de-activation signal for ending the conducting phase are supplied to each control terminal of the switching transistors. A timer is started simultaneously with the provision of an activation signal and the de-activation signal is provided once a predetermined time period has passed.
    Type: Application
    Filed: December 20, 2011
    Publication date: February 6, 2014
    Inventors: Gerhard Koelle, Benno Koeppl, Michael Scheffer
  • Publication number: 20130293176
    Abstract: A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps.
    Type: Application
    Filed: July 10, 2013
    Publication date: November 7, 2013
    Inventors: Benno Koeppl, Michael Scheffer, Frank Auer
  • Patent number: 8487592
    Abstract: A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: July 16, 2013
    Assignee: Infineon Technologies AG
    Inventors: Benno Koeppl, Michael Scheffer, Frank Auer
  • Publication number: 20110193533
    Abstract: A circuit includes a first half bridge including a first controllable semiconductor switch and a first diode. The first controllable semiconductor switch is coupled between a first constant supply potential and a center tap of the first half bridge. The first diode is coupled between the center tap and a constant reference potential. A second half bridge includes a second diode and a second controllable semiconductor switch. The second diode is coupled between a second constant potential higher than the first potential and a center tap of the second half bridge. The second controllable semiconductor switch is coupled between the center tap and the constant reference potential. Driver circuitry controls the conducting state of the first and the second semiconductor switch thus controlling the current flow through a field connectable between the center taps.
    Type: Application
    Filed: February 10, 2010
    Publication date: August 11, 2011
    Inventors: Benno Koeppl, Michael Scheffer, Frank Auer