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:
Sep. 08, 2015
Filed:
Mar. 27, 2012
Takeyasu Komatsu, Chiryu, JP;
Yoshiyuki Hamanaka, Kariya, JP;
Tsuneo Maebara, Nagoya, JP;
Ryotaro Miura, Aichi-ken, JP;
Takeyasu Komatsu, Chiryu, JP;
Yoshiyuki Hamanaka, Kariya, JP;
Tsuneo Maebara, Nagoya, JP;
Ryotaro Miura, Aichi-ken, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A drive circuit for a switching element includes a constant-current control unit and a restriction unit. The constant-current control unit performs a constant-current control for charging an open/close control terminal of a switching element to be driven which is a voltage-controlled switching element with electric charge for turning on the switching element. The restriction unit restricts, to a reference voltage, a voltage between the open/close control terminal and a first end of a pair of ends of a current flow path of the switching element for a predetermined period following a start of the constant-current control within a charging process period during which the open/close control terminal is charged with the electric charge such that the switching element is turned on.