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. 13, 2021
Filed:
Mar. 27, 2019
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Naoki Matsumoto, Kyoto, JP;
Assignee:
ROHM CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/00 (2006.01); H02H 7/122 (2006.01); H02H 1/00 (2006.01);
U.S. Cl.
CPC ...
H02H 7/1227 (2013.01); H02H 1/0007 (2013.01);
Abstract
A low-side driving circuit forms a power conversion apparatus together with a power transistor to be driven. A protection circuit generates a protection signal S. An alarm control circuit changes an electrical state of a fail terminal according to the protection signal S. A judgment circuit compares a voltage Vat a fail (FO) terminal with a predetermined threshold value, and generates a judgment signal Sthat indicates the comparison result. A control logic circuit controls the state of the power transistor based on the judgment signal Sand the protection signal S