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:
Jun. 13, 2017
Filed:
Dec. 02, 2014
Applicant:
Fairchild Korea Semiconductor Ltd., Bucheon-si, KR;
Inventors:
Assignee:
Fairchild Korea Semiconductor Ltd., Bucheon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01); H03K 5/08 (2006.01); H03K 5/1532 (2006.01); H03K 5/1252 (2006.01); H02M 1/36 (2007.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H03K 5/08 (2013.01); H02M 1/36 (2013.01); H02M 1/4258 (2013.01); H03K 5/1252 (2013.01); H03K 5/1532 (2013.01); H02M 2001/0022 (2013.01); H02M 2001/0025 (2013.01); Y02B 70/126 (2013.01);
Abstract
A power supply includes a power switch and a switch control circuit controlling a switching operation of the power switch using a comparison voltage generated according to an output, determining a clamping voltage by sensing an input voltage during a start-up period, and clamping the comparison voltage to the clamping voltage during the start-up period.