Patents by Inventor Stephen C. Au

Stephen C. Au 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).

  • Patent number: 10270348
    Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: April 23, 2019
    Assignee: Avago Technologies International Sales PTE. Limited
    Inventors: Choong Yul Cha, Dandan Li, Hung-Ming Chien, Long Bu, Stephen C. Au
  • Publication number: 20180241312
    Abstract: A synchronous switching regulator circuit for supply regulation of a switching circuit includes a pass transistor to couple the switching circuit to a supply voltage. The synchronous switching regulator circuit further includes a switch that is operable to synchronously turn off a flow of a supply current through the pass transistor. The switching circuit can be controlled by a switching signal, and the switch can operate in synchronization with the switching circuit.
    Type: Application
    Filed: October 12, 2017
    Publication date: August 23, 2018
    Inventors: Choong Yul CHA, Dandan LI, Hung-Ming CHIEN, Long BU, Stephen C. AU
  • Patent number: 6008689
    Abstract: The present invention provides a switch circuit having a switch and a first body grabbing circuit. The switch includes a first transistor and a second transistor. The first transistor has a body and is coupled to the second transistor in parallel to form a common source and a common drain. The common source defines an input node and the common drain defines an output node. The first body grabbing circuit is coupled to the body of the first transistor. The first body grabbing circuit is arranged to couple the body of the first transistor to the input node when the first and second transistors receive a turn-on voltage signal such that a body effect is eliminated in the first transistor.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: December 28, 1999
    Assignee: Maxim Integrated Products, Inc.
    Inventors: Stephen C. Au, David Maes, Chowdhury F. Rahim