Patent ID: 8022678
Filing Date: 2011-09-20
Classification: H02M,Y02B

Abstract:
1. A power supply device adapted for receiving an alternating current (AC) input voltage and generating an output voltage, said power supply device comprising: a first power factor corrector for receiving the AC input voltage and driven by a first driving signal for rectifying the AC input voltage to generate a first driving voltage; a second power factor corrector for receiving the AC input voltage and driven by a second driving signal for rectifying the AC input voltage to generate a second driving voltage; a first resonant circuit coupled to said first power factor corrector for receiving the first driving voltage, operable to generate the output voltage, and having an output side for outputting the output voltage; and a second resonant circuit coupled to said second power factor corrector for receiving the second driving voltage, operable to generate the output voltage, and having an output side for outputting the output voltage, wherein said output sides of said first and second resonant circuits are coupled in parallel to each other.