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:
Nov. 06, 2012
Filed:
Sep. 30, 2009
Vijay G. Phadke, Pasig, PH;
Gordon Currie, Quezon, PH;
Arlaindo V. Asuncion, Parañaque, PH;
Israel Beltran, Antipolo, PH;
Melvin CO, Quezon, PH;
Vijay G. Phadke, Pasig, PH;
Gordon Currie, Quezon, PH;
Arlaindo V. Asuncion, Parañaque, PH;
Israel Beltran, Antipolo, PH;
Melvin Co, Quezon, PH;
Astec International Limited, Kwun Tong, Kowloon, HK;
Abstract
A method of operating a switching power converter having at least one power switch controlled by a drive signal having a switching frequency is disclosed. The method includes monitoring an output power of the switching power converter, determining whether the output power has decreased below a threshold level and, in response to the output power decreasing below the threshold level, changing the switching frequency of the drive signal from a first switching frequency to a second switching frequency when an operating condition of the switching power converter is satisfied. Also disclosed are controllers and switching power converters (including PFC converters).