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:
Jun. 19, 2018
Filed:
Oct. 09, 2015
Fuji Electric Co., Ltd., Kawasaki-shi, JP;
Seiji Momota, Matsumoto, JP;
FUJI ELECTRIC CO., LTD., Kawasaki-Shi, JP;
Abstract
An insulated gate semiconductor device includes an insulated gate semiconductor element, an output current detection unit, a voltage detection unit, and a heat generation amount suppression unit. The insulated gate semiconductor element on-operates by receiving a first gate voltage at a control terminal, and switches and outputs an input voltage to a load. The output current detection unit detects an output current to the load. The voltage detection unit detects an on-voltage of the insulated gate semiconductor element. The heat generation amount suppression unit sets a gate voltage to be applied to the control terminal of the insulated gate semiconductor element higher than the first gate voltage in response to the output current exceeding a rated current value and the on-voltage being lower than a first threshold voltage.