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:
Feb. 07, 2017
Filed:
Sep. 24, 2014
Applicant:
Rohm Co., Ltd., Kyoto, JP;
Inventor:
Hironori Sumitomo, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 1/00 (2006.01); G06F 1/26 (2006.01); G05F 1/10 (2006.01); G05F 1/575 (2006.01); H02M 3/155 (2006.01);
U.S. Cl.
CPC ...
G06F 1/26 (2013.01); G05F 1/10 (2013.01); G05F 1/575 (2013.01); H02M 3/155 (2013.01);
Abstract
A power supply device disclosed in the present specification has an output portion which generates an output voltage from an input voltage by means of on-off control of an output transistor and feeds the output voltage to a load, an output feedback controller which drives the output portion by performing output feedback control, and a detector which detects, by means of an electromagnetic induction method, a ripple component in a monitoring target current resulting from the on-off control of the output transistor. The output feedback controller performs the output feedback control based on the result of detection by the detector.