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. 10, 2019
Filed:
Dec. 10, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A semiconductor device driving circuit includes: a signal transmission circuit including a first level shift circuit, the signal transmission circuit and an unsaturated voltage detection circuit configured to output a first error signal when an unsaturated voltage of a semiconductor switching element driven by the drive signal is detected. The semiconductor device driving circuit generates a second error signal having the second voltage level by level-shifting the first error signal or a converted signal obtained by converting the first error signal into a pulse signal. The semiconductor device driving circuit further includes a soft shutdown circuit configured to change a drive signal for the semiconductor switching element to softly shut down the semiconductor switching element when the second error signal is input.