Patent ID: 7906917
Filing Date: 2011-03-15
Classification: H05B

Abstract:
1. A method of flicker suppression for an LED, comprising: providing a power supply for supplying current to the LED, the power supply comprising a flicker suppressor and being responsive to a dim command signal; receiving the dim command signal at the power supply, wherein the dim command signal is a low light dim command signal; switching the current on; and limiting the current to maintain LED light output below 110 percent of the LED light output corresponding to the dim command signal, wherein limiting output voltage to the LED during power-up comprises: pulsing a switch prior to switching the current on, the switch being responsive to a control signal from a control circuit to control the output voltage; monitoring the output voltage at the flicker suppressor to generate an output voltage feedback signal; providing the output voltage feedback signal to the control circuit; and adjusting the control signal in response to the output voltage feedback signal.