A power supply apparatus and method of regulating is provided. A converter circuit includes a primary switching element and an auxiliary switching element. The auxiliary switching element is for transferring a reflected voltage signal. A transformer includes a primary and a secondary, the primary is coupled with the converter circuit. The primary and secondary each include a single winding. An output rectifier circuit is coupled with the secondary of the transformer. A resonant circuit is included in the converter circuit and is coupled with the primary. The resonant circuit includes one or more resonance capacitors that are configured for providing a transformer resonance. The transformer resonance comprises the reflected voltage signal, the capacitance of the one or more resonance capacitors and a parasitic capacitance of the transformer. The converter circuit is responsive to a virtual output voltage reference signal in regulating an output voltage.
申请公布号
WO2008121397(A1)
申请公布日期
2008.10.09
申请号
WO2008US04183
申请日期
2008.03.28
申请人
FLEXTRONICS AP, LLC;TELEFUS, MARK;ROOHPARVAR, FARZAN, BOB