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:
Mar. 09, 2021
Filed:
Oct. 27, 2016
Autonetworks Technologies, Ltd., Mie, JP;
Sumitomo Wiring Systems, Ltd., Mie, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Yusuke Yano, Mie, JP;
Katsuma Tsukamoto, Mie, JP;
AutoNetworks Technologies, Ltd., Mie, JP;
Sumitomo Wiring Systems, Ltd., Mie, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
In a switch circuit for use in a vehicle, conduction between a drain electrode and a gate electrode of each of a first main transistor and a second main transistor is switched on or off depending on a voltage between the gate electrode and a source electrode. A first surge protection device is connected between the drain electrodes of the first main transistor and the second main transistor. The first surge protection device keeps a voltage that is applied to the first surge protection device at a first predetermined voltage or lower. A sub transistor is provided between the gate electrodes and the source electrodes of the first main transistor and the second main transistor. The sub transistor is turned on when the first main transistor and the second main transistor are turned off.