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:
Dec. 31, 2024
Filed:
Dec. 20, 2021
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Hiroki Akashi, Osaka, JP;
Masafumi Nakamura, Osaka, JP;
Masatoshi Nakase, Osaka, JP;
Yuta Nagatomi, Osaka, JP;
Kinya Kato, Aichi, JP;
Abstract
A backup power supply control system includes: a first semiconductor switch that switches a main power supply line to an electrically conductive state or an electrically non-conductive state; and an auxiliary power supply switch that switches an auxiliary power supply line to the electrically conductive state or the electrically non-conductive state. A first driving unit controls, in a non-failure state, a second semiconductor switch, connected between a gate and source of a first semiconductor switch, OFF and thereby controls the first semiconductor switch ON. The first driving unit ensures, in the failure state, at least a gate-plateau voltage of the first semiconductor switch as a drive voltage for the second semiconductor switch. When a failure detection unit detects the failure state, the first driving unit controls the first semiconductor switch OFF by controlling the second semiconductor switch ON and a second driving unit controls the auxiliary power supply switch ON.