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:
Dec. 07, 2021
Filed:
Jan. 26, 2021
Applicant:
Fuji Electric Co., Ltd., Kanagawa, JP;
Inventors:
Tsuyoshi Nagano, Hino, JP;
Kunio Matsubara, Hino, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/08 (2006.01); H02M 1/00 (2006.01); H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
H02M 1/0054 (2021.05); H02M 1/08 (2013.01); H03K 17/165 (2013.01);
Abstract
A gate drive apparatus including a gate drive unit configured to drive a gate of a switching device, a peak detection unit configured to detect that a voltage across main terminals applied between the main terminals of the switching device during a turn-off period of the switching device is at a peak, and a driving condition changing unit configured to increase a change speed of a gate voltage of the switching device caused by the gate drive unit, in response to a detection that the voltage across main terminals is at a peak.