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.

Date of Patent:
Dec. 14, 2021

Filed:

Mar. 19, 2020
Applicant:

Yazaki Corporation, Tokyo, JP;

Inventors:

Eiichiro Oishi, Shizuoka, JP;

Mitsuaki Morimoto, Shizuoka, JP;

Assignee:

YAZAKI CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/08 (2006.01); H02H 9/02 (2006.01); H02H 7/20 (2006.01); H01H 47/00 (2006.01); H02J 1/00 (2006.01); H02J 7/00 (2006.01); H03K 17/082 (2006.01);
U.S. Cl.
CPC ...
H02H 7/20 (2013.01); H01H 47/002 (2013.01); H02H 3/08 (2013.01); H02J 1/00 (2013.01); H02J 7/0031 (2013.01); H03K 17/0822 (2013.01);
Abstract

A power source switch control device includes a detection circuit, a detection circuit, a detection circuit, and a detection circuit. The detection circuit detects forward voltage of a body diode of a FET, and the detection circuit detects forward voltage of a body diode of a FET. The detection circuit detects forward voltage of a body diode of a FET, and the detection circuit detects forward voltage of a body diode of a FET. A controller determines whether a defect of a power circuit has occurred based on results of the detection by the detection circuits to. Accordingly, the power source switch control device can appropriately detect defect of a switching element of a power source.


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