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:
Feb. 12, 2013
Filed:
Nov. 06, 2009
Chao-hsuan Chuang, Jhubei, TW;
Ching-hsiang Yang, Tauyuan, TW;
Cheng-hsuan Fan, Hukou Shiang, Hsinchu County, TW;
Hung-che Chou, Jiadung Township, Pingtung County, TW;
Chao-Hsuan Chuang, Jhubei, TW;
Ching-Hsiang Yang, Tauyuan, TW;
Cheng-Hsuan Fan, Hukou Shiang, Hsinchu County, TW;
Hung-Che Chou, Jiadung Township, Pingtung County, TW;
Richtek Technology Corp., Hsinchu, TW;
Abstract
A flyback voltage converter includes a transformer having a primary winding and a secondary winding, a switch serially connected to the primary winding for being switched to produce a current in the secondary winding, and a negative lock loop to adjust the peak value of the current in the secondary winding according to a current conduction time during which the current in the secondary winding is higher than a current threshold, such that the peak value of the current in the secondary winding will be in inverse proportion to the time.