Patent ID: 9084325
Filing Date: 2015-07-14
Classification: H02M,H05B,Y02B

Abstract:
1. A light-emitting diode (LED) lamp controller for a switching power converter comprising a switch coupled to a winding that supplies power to one or more LEDs, the LED lamp controller comprising: a dimmer control circuit to detect a dimming amount of an input voltage from a dimmer switch, and to generate a dimming control signal representative of the detected dimming amount; a switch controller to receive the dimming control signal, a current sense signal representing a current through the winding coupled to the switch, and a voltage sense signal representing a reset time of the switching power converter, and to control switching of the switch based on the dimming control signal, the current sense signal, and the reset time to regulate a current through the one or more LEDs such that the one or more LEDs achieve a dimming level corresponding to the detected dimming amount.