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:
Oct. 24, 2017
Filed:
Mar. 12, 2015
Denso Corporation, Kariya, Aichi-pref., JP;
Sadahiro Akama, Kariya, JP;
Kiyoshi Yamamoto, Kariya, JP;
Atsushi Kobayashi, Kariya, JP;
Atsushi Kanamori, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A drive device for controlling a power switching element includes: an on-side circuit that performs an on operation of the power switching element; and an off-side circuit that performs an off operation of the power switching element. The on-side circuit or the off-side circuit includes: multiple main MOS transistors; a sense MOS transistor that define a drain current of each main MOS transistor; and a sense current control circuit that controls a drain current of the sense MOS transistor to be constant; and a switch circuit that is connected to the gate of each main MOS transistor, and controls each main MOS transistor to turn on and off so as to switch a gate current in the power switching element.