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:
Nov. 21, 2023
Filed:
Jun. 13, 2022
Yazaki Corporation, Tokyo, JP;
Hiromichi Hanaoka, Makinohara, JP;
YAZAKI CORPORATION, Tokyo, JP;
Abstract
A power supply control apparatus detects a failure of a semiconductor switch element in a switching circuit having semiconductor series circuits each having semiconductor switch elements connected in series with reverse polarities. The power supply control apparatus includes a reference resistance value storing unit storing information on a combined resistance value between an input and an output of the switching circuit, a conduction current detection unit configured to detect a current flowing through the switching circuit, a potential difference detection unit configured to detect an input-output potential difference between the input and the output of the switching circuit, a voltage drop calculation unit configured to calculate an assumed voltage drop, a voltage comparison unit configured to compare the input-output potential difference with the assumed voltage drop, and a failure identification unit configured to identify a failure of the semiconductor switch element.