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. 22, 2017
Filed:
Nov. 03, 2015
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Kazuhiro Murakami, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/565 (2006.01); G05F 1/00 (2006.01); H02M 3/158 (2006.01); H02M 3/156 (2006.01);
U.S. Cl.
CPC ...
H02M 3/1588 (2013.01); H02M 2003/1566 (2013.01); Y02B 70/1466 (2013.01);
Abstract
A power supply control IC includes: a switching control circuit of a fixed on-time type configured to generate an output voltage from an input voltage by driving an inductor by complimentarily turning on/off an output transistor and a synchronous rectification transistor based on a result of comparison between a predetermined reference voltage and a feedback voltage in accordance with the output voltage. The switching control circuit extends an on-time of the output transistor more when a backflow of a coil current is detected than when the backflow is not detected.