For the system and method that the dynamic threshold of flyback power supply converter regulates

The invention discloses the system and method that the dynamic threshold for flyback power supply converter regulates.Disclose the system and method for the threshold value for regulating power converting system.This system comprises: threshold generator, is configured to reception first signal and at least generates threshold signal based on the information joined with the first signal correction; Comparator, is configured to receive threshold signal and secondary signal and generates comparison signal; And gate driver, be configured at least generate drive singal based on the information be associated with comparison signal.This gate driver is at least coupled to and is configured to receive drive singal and affects the switch flowing through the electric current of the armature winding be coupled with secondary winding.If secondary signal is greater than threshold signal in size, then drive singal makes switch disconnect.This drive singal is associated with a switching frequency.