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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.:

US 9991881 B1

PDFFull Text
Date of Patent:
Jun. 05, 2018

Filed:

Oct. 28, 2016

Switching circuit

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventors:

Hyoungjun Na, Nagakute, JP;

Ken Toshiyuki, Seto, JP;

Shouji Abou, Toyota, JP;

Assignee:

TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;

Attorney:

Oliff PLC

Primary Examiner:

Lincoln Donovan

Assistant Examiner:

Diana J Cheng

Int. Cl.
CPC ...
H03K 17/60 (2006.01); H03K 17/06 (2006.01); H01L 27/06 (2006.01); H03K 17/567 (2006.01); H03K 17/16 (2006.01); H01L 23/528 (2006.01); H01L 49/02 (2006.01); H01L 29/73 (2006.01); H01L 29/739 (2006.01); H01L 29/861 (2006.01); H01L 27/082 (2006.01);
U.S. Cl.
CPC ...
H03K 17/06 (2013.01); H01L 27/0635 (2013.01); H03K 17/168 (2013.01); H03K 17/567 (2013.01); H01L 23/528 (2013.01); H01L 27/0825 (2013.01); H01L 28/20 (2013.01); H01L 29/73 (2013.01); H01L 29/7393 (2013.01); H01L 29/861 (2013.01);
Abstract

A switching circuit includes a wiring into which a parallel circuit of a first IGBT and a second IGBT is inserted, and a gate control circuit. The gate control circuit has a first switching element configured to control a gate potential of the first IGBT according to a potential of a second principal electrode, and a second switching element configured to control a gate potential of the second IGBT according to a potential of a fourth principal electrode. An output terminal of the control device is connected to the first switching element through a first switch and is connected to the second switching element through a second switch. The control device applies a control signal to the output terminal in a state where the first switch and the second switch are turned on when switching both of the first IGBT and the second IGBT.

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