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. 07, 2010
Filed:
May. 15, 2009
Wei-chuan Su, Taipei, TW;
Wei-Chuan Su, Taipei, TW;
Grenergy Opto, Inc., Hsin-Chu, TW;
Abstract
The present invention discloses a secondary side switch-off timing adjusting method for a switching power conversion, comprising: detecting the falling edge of the voltage across a secondary side transistor according to a first reference voltage to generate a first reset signal; detecting the rising edge of the voltage across the secondary side transistor according to a second reference voltage to generate a first set signal; generating a secondary side discharging end signal from a latch operation in response to the first reset signal and the first set signal; and generating an off-predicting signal according to the cycle period of the secondary side discharging end signal. The present invention also provides a secondary side switch-off timing adjusting apparatus, and a system using the apparatus for a power conversion.