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. 30, 2023
Filed:
Jan. 26, 2022
Applicant:
Fuji Electric Co., Ltd., Kawasaki, JP;
Inventors:
Shinichiro Adachi, Matsumoto, JP;
Hirohisa Arai, Matsumoto, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/08 (2006.01); H03K 17/567 (2006.01); H02M 7/5387 (2007.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/567 (2013.01); H02M 1/08 (2013.01); H02M 7/53871 (2013.01); H02P 27/08 (2013.01);
Abstract
A driver circuit for driving a switching device having a control electrode. The driver circuit includes an ON circuit configured to turn on the switching device in response to a first drive signal, and an OFF circuit configured to discharge a parasitic capacitance of the control electrode of the switching device with a constant current, to turn off the switching device, in response to a second drive signal.