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. 29, 2022
Filed:
Apr. 23, 2020
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventors:
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 3/08 (2006.01); H02H 9/02 (2006.01); B60R 16/02 (2006.01); G05F 1/573 (2006.01); G06F 1/30 (2006.01); H03K 19/003 (2006.01); H02H 5/04 (2006.01); H03K 17/08 (2006.01);
U.S. Cl.
CPC ...
H02H 3/08 (2013.01); B60R 16/02 (2013.01); G05F 1/573 (2013.01); G06F 1/305 (2013.01); H02H 9/02 (2013.01); H02H 9/025 (2013.01); H03K 19/00315 (2013.01); H02H 3/085 (2013.01); H02H 5/04 (2013.01); H03K 2017/0806 (2013.01);
Abstract
An overcurrent protection circuit includes a current control part configured to control conductance of a transistor so as to limit an output current flowing when the transistor is turned on to a predetermined upper limit or less, and a duty control part configured to forcibly turning on/off the transistor at a predetermined duty ratio when a temperature protection circuit detects a temperature abnormality in a state where the current control part limits the output current.