Patent ID: 8928235
Filing Date: 2015-01-06
Classification: H05B,Y02B

Abstract:
1. A circuit for use in a power converter, comprising: a damping resistance having a first terminal coupled to an output of a rectifier circuit, the damping resistance having a second terminal coupled to a first terminal of an input filter capacitor of the power converter, wherein a second terminal of the input filter capacitor is coupled to the output of the rectifier circuit; a thyristor having a first terminal coupled to the first terminal of the damping resistance, the thyristor having a second terminal coupled to the second terminal of the damping resistance; and an enable circuit including a first resistance and a first capacitor coupled between the first terminal of the thyristor and a second terminal of the input filter capacitor of the power converter, wherein a terminal coupled between the first resistance and the first capacitor of the enable circuit is coupled to a gate terminal of the thyristor to enable the thyristor in response to an input voltage of the power converter.