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. 25, 2018
Filed:
Feb. 01, 2016
Denso Corporation, Kariya, Aichi-pref., JP;
Junichi Fukuta, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
In a driving device for changing a semiconductor switching element, having an on-off control terminal, between an on state and an off state according to a power supply voltage input thereto, a constant-current driver generates a constant current based on the power supply voltage. The constant-current driver performs one of charging and discharging of the on-off control terminal of the semiconductor switching element based on the generated constant current so as to change the semiconductor switching element from one of the on state and off state to the other thereof. A rate varying unit adjusts, based on correlation information between the power supply voltage and the constant current, a value of the constant current so as to vary a rate of changing the semiconductor switching element from one of the on state and the off state to the other thereof.