Patent ID: 9000683
Filing Date: 2015-04-07
Classification: H05B

Abstract:
1. A bleeder circuit for use in a power converter of a lighting system, comprising: a current sense circuit coupled between first and second terminals of an input of a driver circuit to be coupled to drive a load, the current sense circuit coupled to output a current sense signal in response to an input current through an input of the power converter coupled to the input of the driver circuit; an edge detection circuit coupled between the first and second terminals of the input of the driver circuit, the edge detection circuit coupled to output an edge detection signal in response to an input signal between the first and second terminals of the input of the driver circuit; and a variable current circuit coupled between the first and second terminals of the input of the driver circuit, the variable current circuit coupled to conduct a bleeder current between the first and second terminals of the input of the driver circuit in response to the current sense signal, the variable current circuit further coupled to conduct the bleeder current between the first and second terminals of the input of the driver circuit in response to the edge detection signal.