Patents by Inventor Iris Ho

Iris Ho 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).

  • Low power high side current monitor which operates at high voltages and method therefor
    Patent number: 7336122
    Abstract: A low power high side current monitor has an input terminal and a load terminal. A current sensing element is coupled to the input terminal and the load terminal. A first resistor is coupled to the input terminal. A first pair of transistors is coupled together and to the first resistor. A second pair of transistors is coupled together and to the first pair of transistors. A third pair of transistors is coupled together and to the second pair of transistors. At least one diode is coupled to the second pair of transistors and the third pair of transistors. A transistor has a first terminal coupled to the third pair of transistors and a second terminal coupled to the second pair of transistors. A second resistor is coupled to a third terminal of the transistor and to ground.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: February 26, 2008
    Assignee: Supertex, Inc.
    Inventors: Isaac Terasuth Ko, Iris Ho
  • Low power high side current monitor which operates at high voltages and method therefor
    Publication number: 20070126493
    Abstract: A low power high side current monitor has an input terminal and a load terminal. A current sensing element is coupled to the input terminal and the load terminal. A first resistor is coupled to the input terminal. A first pair of transistors is coupled together and to the first resistor. A second pair of transistors is coupled together and to the first pair of transistors. A third pair of transistors is coupled together and to the second pair of transistors. At least one diode is coupled to the second pair of transistors and the third pair of transistors. A transistor has a first terminal coupled to the third pair of transistors and a second terminal coupled to the second pair of transistors. A second resistor is coupled to a third terminal of the transistor and to ground.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 7, 2007
    Inventors: Isaac Ko, Iris Ho