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:
Aug. 16, 2016
Filed:
Apr. 06, 2012
Junichiro Ishikawa, Tokyo, JP;
Junichiro Ishikawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A composite semiconductor switching device includes: a first semiconductor element that incurs switching losses when performing switching operation of turning on and off; a second semiconductor element that is parallelly connected to the first semiconductor element and incurs switching losses larger than the first semiconductor element when performing switching operations of turning on and off; and a controller that operates in order of giving a first on-command signal to the first semiconductor element, giving a second on-command signal to the second semiconductor element, deactivating the first on-command signal, giving a third on-command signal to the first semiconductor element, and deactivating the second on-command signal.