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:
Jan. 28, 2020
Filed:
Jun. 13, 2019
Mitsubishi Electric Corporation, Tokyo, JP;
Hisashi Oda, Tokyo, JP;
Shinji Sakai, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An inverter driver includes: a switching device; a drive circuit driving the switching device; a current detection device generating a voltage signal corresponding to a current flowing through the switching device; a noise filter removing noise superposed on the voltage signal; an excess current detection circuit outputting an excess current detection signal when the voltage signal input via the noise filter exceeds a first threshold value; and a short circuit detection circuit outputting an error signal when the excess current detection signal is input or the voltage signal input by bypassing the noise filter exceeds a second threshold value.