摘要
A common-core power-factor-corrected (PFC) resonant converter includes an energy-transformed circuit. The energy-transformed circuit receives an input voltage and generates an output power. The energy-transformed circuit includes a coupling inductor component and a charge-stored capacitor component. The coupling inductor component and a charge-stored capacitor component are charged by using the input voltage according to a controlling signal, so as to generate a charge-stored capacitor voltage. When the charge-stored capacitor voltage is charged to a preset voltage level, the coupling inductor component and the charge-stored capacitor component are discharged according to the controlling signal. Then, energies of the coupling inductor component and the charge-stored capacitor component are transformed to output for providing the regulated output voltage and current.