Patents by Inventor Martin Ulbrich

Martin Ulbrich 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).

  • Paralleling power switches using a differential mode choke in the gate drive loop
    Patent number: 10461733
    Abstract: In one aspect, a device includes a first power switch having a first gate, a second power switch paralleled with the first power switch and having a second gate, a gate driver to output a gate drive signal to drive both the first gate and the second gate, a first conduction path to couple the gate drive signal to the first gate, a second conduction path to couple the gate drive signal to the second gate, and a distribution choke to distribute the gate drive signal to the first and second power switches. The distribution choke has a first winding disposed in the first conduction path and a second winding disposed in the second conduction path. The distribution choke is coupled in a differential mode.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: October 29, 2019
    Assignee: Power Integrations, Inc.
    Inventors: Karsten Fink, Christoph Dustert, Andreas Volke, Michael Hornkamp, Martin Ulbrich
  • PARALLELING POWER SWITCHES USING A DIFFERENTIAL MODE CHOKE IN THE GATE DRIVE LOOP
    Publication number: 20180123579
    Abstract: In one aspect, a device includes a first power switch having a first gate, a second power switch paralleled with the first power switch and having a second gate, a gate driver to output a gate drive signal to drive both the first gate and the second gate, a first conduction path to couple the gate drive signal to the first gate, a second conduction path to couple the gate drive signal to the second gate, and a distribution choke to distribute the gate drive signal to the first and second power switches. The distribution choke has a first winding disposed in the first conduction path and a second winding disposed in the second conduction path. The distribution choke is coupled in a differential mode.
    Type: Application
    Filed: April 14, 2016
    Publication date: May 3, 2018
    Inventors: Karsten Fink, Christoph Dustert, Andreas Volke, Michael Hornkamp, Martin Ulbrich