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. 08, 2022
Filed:
Feb. 24, 2021
Applicant:
Fuji Electric Co., Ltd., Kanagawa, JP;
Inventors:
Kunio Matsubara, Hino, JP;
Tsuyoshi Nagano, Hino, JP;
Assignee:
FUJI ELECTRIC CO., LTD., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/08 (2006.01); H03K 17/16 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H03K 17/165 (2013.01); H02M 1/08 (2013.01); H02M 1/0054 (2021.05);
Abstract
Provided is a gate drive device, including: a gate drive unit for driving a gate of a switching element; a measurement unit for measuring a parameter that changes according to a current flowing through the switching element; and a switching unit for switching a changing speed of a gate voltage of the switching element by the gate driving unit after a first reference period from a start of turning off the switching element based on the parameter.