Patent ID: 6970364

Claim:
A single stage bi-flyback Power Factor Correction(PFC) converter power supply comprising the combination: (a) a PFC cell containing a first flyback integrated circuit which operates in the Discontinuous Conduction Mode(DCM); and, (b) a Direct Current/Direct Current (DC/DC) conversion cell containing a second flyback integrated circuit which operates in the Conduction Mode of the class consisting of the Continuous Conduction Mode(CCM) and Discontinuous Conduction Mode(DCM); (c) a single capacitor and a single switch, wherein power factor correction(PFC) and high efficiency occurs with the first flyback integrated circuit and the second flyback integrated circuit through the single capacitor and the single switch; and (d) a continuous direct current(DC) voltage of less than approximately 400 volts, wherein one of the first and the second flyback integrated circuits is continuously operated without interruption in the discontinuous conduction mode(DCM) to achieve the high power factor correction(PFC) when operating the first flyback integrated circuit and the second flyback integrated circuit with the single switch and the single capacitor.