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:
Sep. 23, 2025
Filed:
Mar. 03, 2023
Meidensha Corporation, Tokyo, JP;
Isamu Hasegawa, Numazu, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
A gate drive circuit of a power converter includes semiconductor devices connected in series and pulse transformers, each of which includes a primary winding and a secondary winding. The primary windings of the pulse transformers are connected in series; the secondary windings of the pulse transformers are respectively connected to the semiconductor devices directly or indirectly; and the pulse transformers establish insulation between a primary side and a secondary side of the pulse transformers, while transmitting electric power or electric power and control signals from the primary side to the secondary side. Auxiliary windings are provided that establish magnetic coupling between the pulse transformers.