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. 04, 2020
Filed:
Jan. 08, 2016
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/082 (2006.01); H03K 17/14 (2006.01); H03K 17/567 (2006.01); H03K 17/08 (2006.01);
U.S. Cl.
CPC ...
H03K 17/0828 (2013.01); H03K 17/145 (2013.01); H03K 17/567 (2013.01); H03K 2017/0806 (2013.01);
Abstract
A current detection circuit () detects a device current flowing in the semiconductor device (). A voltage detection circuit () detects a device voltage applied to the semiconductor device (). A temperature calculation device () has a table collecting device temperatures of the semiconductor device () respectively corresponding to plural collector currents and plural collector voltages, and reads out a device temperature corresponding to the device current detected by the current detection circuit () and the device voltage detected by the voltage detection circuit () from the table.