Patent ID: 8767417

Claim:
A dual switches power converter with a wide input voltage range, comprising: an electrolytic capacitor, coupled to an input voltage of the dual switches power converter; an input diode, coupled from the input voltage of the dual switches power converter to a HV terminal for preventing a reflected voltage of a power transformer from charging the electrolytic capacitor; an energy-storage capacitor, connected to the input diode in parallel and storing an energy of a leakage inductor of the power transformer; a high-side transistor, coupled from the HV terminal to the power transformer; a low-side transistor, coupled from the power transformer to a ground; a first diode, coupled from the power transformer to the HV terminal; a second diode, coupled from the ground to the power transformer; and a switching-control circuit, coupled to an output voltage of the dual switches power converter to generate a switching signal for regulating the dual switches power converter; wherein the switching signal is coupled to drive the high-side transistor and the low-side transistor.