Patents by Inventor Gin Kooi Lim

Gin Kooi 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).

  • On-off timer circuit for use in DC-DC converter
    Patent number: 8283908
    Abstract: An ON-OFF timer circuit for use in a DC-DC converter to minimize or eliminate the risk of developing sub-harmonic oscillations that may cause the dc-dc system to be unstable is presented. The apparatus controls and limits the ‘On’ time duration and ‘Off’ time duration within one pulse cycle.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: October 9, 2012
    Assignees: Panasonic Corporation, Panasonic Semiconductor Asia Pte. Ltd.
    Inventors: Takuya Ishii, Chun Kiong Leslie Khoo, Ulysses Ramos Lopez, Gin Kooi Lim, Khairullah Bin Zayadi
  • POWER SUPPLY CIRCUIT
    Publication number: 20120019227
    Abstract: An apparatus for selecting either a High VIN path or a Low VIN path from a voltage source to a low voltage circuit is disclosed. The apparatus has a clamped step down circuit operable to select the High VIN path when a voltage level from the voltage source is above or equal to a pre-determined voltage level and, a power supply control circuit operable to select the Low VIN path when the voltage level from the voltage source is below the pre-determined voltage level.
    Type: Application
    Filed: July 23, 2010
    Publication date: January 26, 2012
    Applicants: PANASONIC SEMICONDUCTOR ASIA PTE., LTD., PANASONIC CORPORATION
    Inventors: Chun Kiong Leslie KHOO, Ulysses Ramos LOPEZ, Gin Kooi LIM, Toru MATSUNAGA
  • ON-OFF TIMER CIRCUIT FOR USE IN DC-DC CONVERTER
    Publication number: 20110215786
    Abstract: An ON-OFF timer circuit for use in a DC-DC converter to minimize or eliminate the risk of developing sub-harmonic oscillations that may cause the dc-dc system to be unstable is presented. The apparatus controls and limits the ‘On’ time duration and ‘Off’ time duration within one pulse cycle.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Applicants: PANASONIC CORPORATION, PANASONIC SEMICONDUCTOR ASIA PTE., LTD.
    Inventors: Takuya ISHII, Chun Kiong Leslie KHOO, Ulysses Ramos LOPEZ, Gin Kooi LIM, Khairullah Bin ZAYADI