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:
Mar. 26, 2019
Filed:
Sep. 28, 2018
Fuji Electric Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Hidetomo Ohashi, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Abstract
There is provided a drive circuit for turning on/off a power element which controls a main current flow between a first main electrode and a second main electrode in response to a drive signal applied to a control electrode. The drive circuit includes a a first semiconductor switching element and a second semiconductor switching element which are connected in series with a semiconductor element and provided between the power supply terminal and the ground terminal, third semiconductor switching element and a fourth semiconductor switching element which are connected in series, and a control circuit which controls turn-on/off of the power element by turning on/off the first to fourth semiconductor switching elements. The semiconductor element has a positive temperature characteristic.