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:
May. 17, 2022
Filed:
Feb. 09, 2018
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A first clamp circuit () clamps a voltage between a gate and a first terminal of a switching device (Q) to equal to or lower than a first clamp voltage. A control circuit () controls the switching device (Q) and includes a driving unit () driving the switching device (Q), an abnormality detecting unit () stopping the driving unit () upon detection of an abnormality in operation, and a second clamp circuit (). The second clamp circuit () clamps the voltage between the gate and the first terminal to equal to or lower than a second clamp voltage which is lower than the first clamp voltage when the abnormality detecting unit () stops the driving unit ().