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:
Nov. 04, 2025
Filed:
Dec. 28, 2020
Mitsubishi Electric Corporation, Tokyo, JP;
Kohei Onda, Tokyo, JP;
Shotaro Karasuyama, Tokyo, JP;
MITSUBISHI ELECTRIC CORPORATION, Tokyo, JP;
Abstract
A semiconductor driving device includes: a control unit which generates an ON/OFF command for a semiconductor switching element; a gate power supply unit which generates voltage to be applied between a gate terminal and a source terminal of the semiconductor switching element; a gate driving unit which applies the voltage generated by the gate power supply unit, between the gate terminal and the source terminal; and a gate leakage current detection unit which detects gate leakage current of the semiconductor switching element on the basis of voltage occurring at a gate resistor connected to the gate terminal, using a negative-side potential of the gate power supply unit as a reference.