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:
Aug. 08, 2023
Filed:
Oct. 12, 2021
Rohm Co., Ltd., Kyoto, JP;
Satoru Nate, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
There is provided a semiconductor device that includes a switch terminal; a ground terminal; an output switch connected between the switch terminal and the ground terminal and configured to be switchable between a first on-resistance value and a second on-resistance value higher than the first on-resistance value; a detection circuit configured to detect a short-circuit abnormality of the switch terminal by monitoring a switch voltage that appears at the switch terminal in a predetermined detection period; and a controller configured to perform a pulse-drive of the output switch by setting the output switch to the second on-resistance value in the detection period, continuously perform the pulse-drive of the output switch by setting the output switch to the first on-resistance value if the short-circuit abnormality of the switch terminal is not detected, and forcibly stop the pulse-drive of the output switch if the short-circuit abnormality of the switch terminal is detected.