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:
Mar. 08, 2016
Filed:
Jan. 18, 2013
Sanken Electric Co., Ltd., Niiza-shi, Saitama, JP;
Jung Soo Lee, Saitama, JP;
Satoshi Nakamoto, Saitama, JP;
Chie Isshi, Saitama, JP;
Masaru Nakamura, Saitama, JP;
Sanken Electric Co., LTD., Niiza-shi, Saitama, JP;
Abstract
A switching power-supply device includes a switching element; an output circuit; a feedback signal generation circuit; a control circuit that drives the switching element, based on the feedback signal, and controls the voltage of the power-supply output; a correction circuit that corrects a signal level of the feedback signal, wherein the control circuit comprises: an oscillation circuit that generates an on-trigger signal; a current detection circuit that generates a current detection signal; a difference detection circuit that generates a difference detection signal; a comparison circuit that generates an off-trigger signal, based on the current detection signal and the difference detection signal; and a first load detection circuit that controls an operation of the correction circuit, based on the current detection signal, and wherein the control circuit changes a setting voltage of the power-supply output, according to the signal level of the feedback signal.