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:
Nov. 06, 2018
Filed:
Sep. 01, 2014
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Fumio Wada, Tokyo, JP;
Hiroya Sannai, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); G05F 1/569 (2006.01); G05F 1/571 (2006.01); H02M 3/158 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H02M 1/08 (2013.01); H02M 3/1588 (2013.01); H02M 2001/0048 (2013.01); H02M 2001/0054 (2013.01); H02M 2001/327 (2013.01); Y02B 70/1466 (2013.01); Y02B 70/1491 (2013.01);
Abstract
An object is to provide a technique enabling conversion efficiency to be increased irrespective of an operating ambient temperature. A DC-DC converter includes switching elements, a drive unit which drives the switching elements to conduct synchronous rectification, a freewheel diode connected in parallel to the switching element, and a temperature detection circuit which detects a temperature of the freewheel diode. The drive unit stops driving the switching element when the temperature detected by the temperature detection circuit is equal to or lower than a predetermined first threshold value.