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:
Sep. 02, 2025
Filed:
Jan. 12, 2022
Rohm Co., Ltd., Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
A self-diagnosis circuit (BST) configured to diagnose a fault detection circuit () including a first comparator (CMP) configured to be fed with a voltage based on a fault sensing target voltage (Vo) and a first reference voltage (Vref) includes a voltage switch circuit () configured to switch the level of a voltage based on a second reference voltage (Vref) and output the resulting voltage, a first path switch circuit () configured to switch between a path through which the voltage output from the voltage switch circuit is fed to the first comparator and a path through which the voltage based on the fault sensing target voltage is fed to the first comparator, and a control circuit () configured to control the voltage switch circuit and the path switch circuit.