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. 29, 2020
Filed:
Dec. 29, 2017
Renesas Electronics Corporation, Tokyo, JP;
Kazuaki Kubo, Tokyo, JP;
Koichiro Hashimoto, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
There is a need to provide a semiconductor device and an electronic control system including the same while the semiconductor device is capable of continuing normal operation even when a negative surge voltage is applied. According to an embodiment, a driver IC includes an output transistor, a driver control circuit, a negative potential clamp circuit, and an ESD protection circuit. The output transistor is provided between a battery voltage terminal and an output terminal coupled to a load. The driver control circuit switches on-off state of the output transistor by controlling a gate voltage of the output transistor with reference to a voltage of the output terminal. The negative potential clamp circuit turns on the output transistor regardless of control from the control circuit when a negative voltage lower than a predetermined voltage is applied to the output terminal. The ESD protection circuit is provided between battery the voltage terminal and the reference voltage terminal and enters a conduction state when a surge voltage is applied to the battery voltage terminal.