Patents by Inventor I-Fay F. Wang

I-Fay F. Wang 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).

  • CMOS substrate charge pump voltage regulator
    Patent number: 4825142
    Abstract: A substrate bias voltage regulator (10) is disclosed having a voltage divider (22) for generating a reference voltage, a low gain stage (24) for developing a drive voltage independent of the supply voltage (V.sub.cc) and for driving a current source/mirror circuit (26). The current source/mirror circuit (26) operates in conjunction with a current sink circuit (30) for providing a logic output of the regulator (10) for controlling a substrate charge pump circuit (18). Connected to the current sink circuit (30) is a compensation circuit (32) for adjusting the drive to the current sink circuit (30) in response to transistor threshold voltage and temperature considerations.
    Type: Grant
    Filed: June 1, 1987
    Date of Patent: April 25, 1989
    Assignee: Texas Instruments Incorporated
    Inventor: I-Fay F. Wang