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...http://www.google.com/patents/US7791913?utm_source=gb-gplus-sharePatent US7791913 - Secondary side switch-off timing adjusting method, apparatus, and system using same
