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. 22, 2016
Filed:
Jun. 03, 2014
Applicant:
Sony Corporation, Tokyo, JP;
Inventor:
Tomohiro Koga, Saitama, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/155 (2006.01); G05F 1/70 (2006.01); H02M 1/42 (2007.01); H02M 7/155 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4225 (2013.01); G05F 1/70 (2013.01); H02M 3/155 (2013.01); H02M 7/1557 (2013.01); H02M 2001/0009 (2013.01); H02M 2001/0032 (2013.01); H02M 2001/0058 (2013.01); H02M 2003/1552 (2013.01); Y02B 70/126 (2013.01); Y02B 70/1491 (2013.01); Y02B 70/16 (2013.01);
Abstract
Provided is a switching power supply device in a critical mode, including a load detection section that detects a load. When the detected load is lighter than a setting value, an upper limit of a switching frequency is lowered stepwise.