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:
Jul. 23, 2019
Filed:
Jul. 06, 2018
Rohm Co., Ltd., Kyoto-shi, Kyoto, JP;
Yuichi Shinozaki, Kyoto, JP;
ROHM CO., LTD., Kyoto, JP;
Abstract
A driving circuit drives an N-channel or NPN high-side transistor. A level shift circuit includes an open-drain differential conversion circuit that converts an input signal Sinto a differential signal S/S, and a latch circuit that switches its state according to the differential output S/Sof the differential conversion circuit. A driver drives a high-side transistor according to an output of the level shift circuit. A bootstrap circuit generates a bootstrap voltage Vto be used as an upper-side power supply for the driver. Upon detecting an abnormal state, a protection circuit controls at least a part of the driving circuit except for the input signal Sso as to turn off the high-side transistor.