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.:
Date of Patent:
Jan. 17, 2006
Filed:
Nov. 04, 2002
Scott B. Kesler, Kokomo, IN (US);
Duane E. Beyler, Sharpsville, IN (US);
John R. Fruth, Kokomo, IN (US);
Scott B. Kesler, Kokomo, IN (US);
Duane E. Beyler, Sharpsville, IN (US);
John R. Fruth, Kokomo, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
Thermal overload protection circuitryfor an automotive ignition system includes a gate drive circuit () responsive to a control signal (ESTB) to produce a drive signal (V) for driving a power switching device () separate from the protection circuitry (), and a thermal overload protection circuit () configured to supply a first current (I) to a thermal sensing component () associated with, and having an operating temperature defined by, the power switching device (), wherein the first current (I) has a magnitude defined by the operating temperature of the thermal sensing component (). The first current is multiplied by a current controlled current source () to produce a second current (I), and the second current is used to limit the drive signal (V) to thereby maintain the operating temperature of the power switching device () below an operating temperature limit.