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:
Jul. 21, 2020
Filed:
May. 08, 2019
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventor:
Yoshinori Hayashi, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 17/0812 (2006.01); H02M 3/158 (2006.01); H02M 7/5387 (2007.01); H02M 1/08 (2006.01); H02P 27/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/08128 (2013.01); H02M 1/08 (2013.01); H03K 17/08122 (2013.01); H02M 3/158 (2013.01); H02M 7/53871 (2013.01); H02P 27/08 (2013.01);
Abstract
A suppressing circuit is provided with a diode of which an anode is connected to a first neutral point between a drive circuit and a control electrode of a semiconductor switch; a capacitor disposed between a cathode of the diode and a reference potential; a constant voltage circuit connected to a second neutral point between the diode and the capacitor; an adjusting resistor disposed between the constant voltage circuit and the second neutral point; and a cutoff switch disposed between a constant voltage circuit side of the adjusting resistor and the reference potential.