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:
Oct. 28, 2014
Filed:
Jan. 03, 2012
Young-je Lee, Bucheon, KR;
Gye-hyun Cho, Incheon, KR;
Seung-woo Hong, Seoul, KR;
Jae-yong Lee, Seongnam, KR;
Young-Je Lee, Bucheon, KR;
Gye-Hyun Cho, Incheon, KR;
Seung-Woo Hong, Seoul, KR;
Jae-yong Lee, Seongnam, KR;
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Abstract
Embodiments of the present invention relate to a switch control circuit, a switch control method, and a power supply device using the same. Embodiments generate a reference signal according to a full-wave rectification voltage and control a switching operation of a power switch according to a comparing result of a sense voltage corresponding to a current flowing to the power switch and the reference voltage. Embodiments determine whether a line is opened between a first output terminal and a second output terminal of the power supply device using the sense voltage. When the line is opened, Embodiments turn off the protection switch.