The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7468874 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 23, 2008

Filed:

Nov. 08, 2005
Applicant:

Sam Yonghon Guo, Canton, MI (US);

Inventor:

Sam Yonghon Guo, Canton, MI (US);

Assignee:

Yazaki North America, Inc., Canton, MI (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01); H02H 3/08 (2006.01); H02H 5/04 (2006.01); H02H 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract

A sensorless protection circuit comprises a detection module. The detection module receives a reference voltage signal and receives a load voltage signal from a MOSFET. The detection module generates a detection signal having a first state and a second state according to the reference voltage signal and the load voltage signal. A protection module receives the detection signal and maintains the MOSFET in an ON state when the detection signal is in the first state and transitions the MOSFET from the ON state to an OFF state when the detection signal is in the second state. The detection signal is in the second state when the MOSFET is in at least one of a current overload condition, an over temperature condition, a startup inrush current condition, and a short circuit condition.


Find Patent Forward Citations

Guo, Sam. (2008). Protection circuit for digital power module (U.S. Patent No. 7468874). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7468874

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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