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. 25, 2019
Filed:
Nov. 08, 2018
Jtekt Corporation, Osaka-shi, Osaka, JP;
Hiroshi Kitamoto, Toyota, JP;
JTEKT CORPORATION, Osaka-shi, JP;
Abstract
In an electric power converter, a driver unit includes an output unit, an auxiliary power source, a switch circuit unit, and a diode. The output unit includes first and second MISFETs and selectively outputs an on signal or an off signal to a gate electrode of a first HEMT. The auxiliary power source outputs a predetermined positive voltage. The switch circuit unit selectively connects a source electrode of the first MISFET to the auxiliary power source or a drain electrode of the first HEMT. The diode is connected to a source electrode of the second MISFET and is oriented such that forward current flows to a source electrode of the first HEMT. In the event of a short circuit in a certain HEMT, a microcomputer connects the source electrode of the first MISFET to the auxiliary power source and outputs an off command to the driver unit.