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:
Jan. 08, 2013
Filed:
Feb. 04, 2011
Masaki Tagome, Osaka, JP;
Masaki Tagome, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The present invention aims to provide a power converter with an arm including switching devices connected in parallel, realizing long lifespans of switching devices. An inverter includes an upper and a lower arm, and gate drive circuits each driving the corresponding arm according to a gate control signal Gup_s indicating ON/OFF periods. Each arm includes switching devices connected in parallel. Each gate drive circuit includes: a switching gate control circuitbringing a switching deviceinto conduction at the beginning of the ON period and bringing the same out of conduction within the ON period; and a conduction gate control circuitbringing switching devicesandwithin a period from when the switching deviceis brought into conduction until the same is brought out of conduction, wherein the switching devicehas a lower parasitic capacitance than the switching devicesand the