Patents by Inventor Won-Seok LIM

Won-Seok LIM 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).

  • Switch control circuit and power supply device including the same
    Patent number: 8878593
    Abstract: The present invention relates to a switch control circuit that controls a switching operation of a power switch circuit that includes cascode-coupled first and second transistors. A switch control circuit includes a first zener diode coupled between a gate of the first transistor and a first end of a capacitor supplying a power voltage and a second zener diode coupled to a gate and a source of the first transistor, and a first resistor coupled between the first zener diode and the second zener diode.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: November 4, 2014
    Assignee: Fairchild Korea Semiconductor Ltd.
    Inventors: Gwan-Bon Koo, Jin-Tae Kim, Won-Seok Lim
  • SWITCH CONTROL CIRCUIT AND POWER SUPPLY DEVICE INCLUDING THE SAME
    Publication number: 20140118054
    Abstract: The present invention relates to a switch control circuit that controls a switching operation of a power switch circuit that includes cascode-coupled first and second transistors. A switch control circuit includes a first zener diode coupled between a gate of the first transistor and a first end of a capacitor supplying a power voltage and a second zener diode coupled to a gate and a source of the first transistor, and a first resistor coupled between the first zener diode and the second zener diode.
    Type: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.
    Inventors: Gwan-Bon KOO, Jin-Tae KIM, Won-Seok LIM