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:
Aug. 20, 2019
Filed:
Oct. 19, 2015
Mitsubishi Electric Corporation, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A semiconductor device drive circuit drives a semiconductor switching device including a first electrode, a second electrode, and a control electrode. The semiconductor device drive circuit includes an input terminal that receives an input signal; a level shift unit that shifts a voltage level of the input signal and outputs a drive signal to be supplied to the control electrode; a first resistor that generates a first current from a first voltage applied to the first electrode; a second resistor that generates a second current from a second voltage applied to the second electrode; and a voltage difference determination unit that outputs a detection signal when a difference between the first current and the second current is equal to or greater than a predetermined desaturation determination value. The semiconductor device drive circuit is a single integrated circuit chip.