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:
Mar. 20, 2018
Filed:
Mar. 01, 2017
Applicant:
Kabushiki Kaisha Toshiba, Minato-ku, Tokyo, JP;
Inventors:
Kohei Hasegawa, Kanagawa, JP;
Takenori Yasuzumi, Kanagawa, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); H02M 3/158 (2006.01); H02M 3/156 (2006.01); H02M 1/38 (2007.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H02M 3/156 (2013.01); H02M 1/38 (2013.01);
Abstract
A switching device includes first and switching elements connected in series, a capacitor connected to a gate of the first switching element, a diode having an anode connected between the capacitor and the gate of the first switching element and a cathode connected to a source of the first switching element. A capacitance of the capacitor is equal to or greater than a value calculated by a predetermined expression.