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:
Apr. 06, 2004
Filed:
Oct. 22, 2002
Toru Iwagami, Tokyo, JP;
Shinya Shirakawa, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A power semiconductor device includes a half bridge circuit, a control circuit and a noise removal circuit. The half bridge circuit includes a switching element on a low voltage side and a switching element on a high voltage side, those switching elements serially connected. The control circuit controls a switching operation of the switching element on a low voltage side in the half bridge circuit. The control circuit has a supply-voltage receiving terminal connected to a high voltage side of a power supply for driving the control circuit. The noise removal circuit including, for example, a zener diode, is interposed between the supply-voltage receiving terminal of the control circuit and the low voltage side terminal of the switching element on a low voltage side, to remove noise generated on a conductor connected to a low voltage side terminal of the switching element on a low voltage side.