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:
Sep. 03, 2013
Filed:
Dec. 16, 2009
Applicants:
Ren-yi Chen, Hsin-Chu, TW;
Chun-teh Chen, Hsin-Chu, TW;
Inventors:
Ren-Yi Chen, Hsin-Chu, TW;
Chun-Teh Chen, Hsin-Chu, TW;
Assignee:
Leadtrend Technology Corp., Science-Based Industrial Park, Hsin-Chu, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G05F 1/40 (2006.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract
A switching power supply includes a power switch, an adjusting circuit and a limit signal generator. The power switch operates according to a switch control signal. The adjusting circuit adjusts the turn-on time of the switch control signal according to a limit signal and a detecting signal which corresponds to the current passing the power switch. When the detecting signal exceeds or is equal to the limit signal, the limit signal generator samples a reference signal and updates the limit signal according to the sampled reference signal.