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:
Apr. 16, 2013
Filed:
Jun. 30, 2006
Applicant:
Shunzou Ohshima, Toyota, JP;
Inventor:
Shunzou Ohshima, Toyota, JP;
Assignee:
Yazaki Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A voltage (V−V) between a predetermined point Pon a copper foil patternconnected to a source of a switching FET (T) and a drain Pof the FET (T) is input into an input terminal of a comparator CMPas an overcurrent determination voltage for comparison with a reference voltage V. As this occurs, since there exists a voltage that is to be dropped by a resistor Rp possessed by the copper foil, the voltage (V−V) becomes larger than an inter-terminal voltage VDS of the FET (T), and as a result, the effect imposed by an offset voltage Vpossessed by the comparator CMPcan be reduced.