Patent ID: 6812679
Filing Date: 2004-11-02
Classification: H02M,Y02B,Y02P

Abstract:
A power converter, comprising:a boost converter that receives a rectified AC input and generates a high voltage output, the boost converter including a zero-voltage-switching transistor that is operable to adjust the power factor of the rectified AC input to generate the high voltage output; a DC/DC converter coupled to the high voltage output of the boost converter and configured to generate a regulated output voltage, the DC/DC converter including a complementary pair of zero-voltage-switching transistors that are operable to regulate the high voltage output of the boost converter to generate the regulated output voltage; and a coupler chain coupled between a current-carrying terminal of the zero-voltage-switching transistor of the boost converter and current-carrying terminals of the complementary pair of zero-voltage-switching transistors in the DC/DC converter, the coupler chain being operable to reduce the voltage across the current-carrying terminals of at least one of the zero-voltage-switching-transistors.