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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 10651837 B1

PDFFull Text
Date of Patent:
May. 12, 2020

Filed:

Feb. 05, 2016

Power supply device

Applicants:

Autonetworks Technologies, Ltd., Yokkaichi, Mie, JP;

Sumitomo Wiring Systems, Ltd., Yokkaichi, Mie, JP;

Sumitomo Electric Industries, Ltd., Osaka-shi, Osaka, JP;

Inventors:

Katsuma Tsukamoto, Mie, JP;

Yusuke Yano, Mie, JP;

Keisuke Wakazono, Mie, JP;

Assignees:

AutoNetworks Technologies, Ltd., Yokkaichi, Mie, JP;

Sumitomo Wiring Systems, Ltd., Yokkaichi, Mie, JP;

Sumitomo Electric Industries, Ltd., Osaka-Shi, Osaka, JP;

Attorney:

Honigman LLP

Primary Examiner:

Stephen W Jackson

Int. Cl.
CPC ...
H02H 3/00 (2006.01); H03K 17/0812 (2006.01); H03K 17/082 (2006.01); G01R 31/327 (2006.01); H02H 3/04 (2006.01); H02H 3/05 (2006.01); H02H 3/08 (2006.01); H03K 5/24 (2006.01); G01R 31/40 (2020.01); H02H 3/087 (2006.01); G01R 31/00 (2006.01); H02H 1/00 (2006.01);
U.S. Cl.
CPC ...
H03K 17/08122 (2013.01); G01R 31/3277 (2013.01); H02H 3/044 (2013.01); H02H 3/05 (2013.01); H02H 3/08 (2013.01); H03K 5/24 (2013.01); H03K 17/0822 (2013.01); G01R 31/006 (2013.01); G01R 31/40 (2013.01); H02H 1/0007 (2013.01); H02H 3/087 (2013.01); H03K 2217/0027 (2013.01);
Abstract

Provided is a power supply device configured to diagnose circuit operation, and identify, if a defect is found in the diagnosis, the circuit component that is the cause. The power supply device includes: a switch that is disposed in a power supply path leading from a main power source to a load, and is configured to bring into conduction and interrupt the power supply path; a downstream sensing means for sensing a power supply state of a load-side power supply path between the switch and the load; a comparing means for comparing a downstream voltage of the load-side power supply path, with a predetermined threshold voltage; and a control unit. The control unit includes: a switch control means for turning the switch on/off; and a conduction determination means for determining whether the switch is in an ON or OFF state based on the output of the downstream sensing means.

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