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:
Feb. 02, 2021
Filed:
Aug. 31, 2018
Fuji Electric Co., Ltd., Kawasaki, 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 first and second semiconductor switch elements which are connected in series and interposed between a power supply terminal and a ground terminal, a series connection point thereof being connected to the control electrode, third and fourth semiconductor switch elements which are connected in series and interposed between the power supply terminal and the ground terminal, a series connection point thereof being connected to the second main electrode, and a control circuit which controls turn-on/off of the power element by turning on/off the first to fourth semiconductor switch elements. The first semiconductor switch element has a larger on-resistance than the second to fourth semiconductor switch elements.