Patents by Inventor Tzu-Chen Lin

Tzu-Chen Lin 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).

  • Valley detecting circuit and method for a voltage drop across a switching device
    Publication number: 20080116870
    Abstract: A valley detecting circuit and method are provided for a voltage drop across a switching device, which detect a voltage drop across the switching device to produce a first voltage proportional to the voltage drop across the switching device, clamp the first voltage to produce a second voltage, level shift the second voltage to produce a third voltage, and compare the second voltage with the third voltage to determine a valley for the first voltage.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 22, 2008
    Inventor: Tzu-Chen Lin