Patent ID: 8860317
Filing Date: 2014-10-14
Classification: H05B,Y02B

Abstract:
1. A multi power supply apparatus for driving light emitting diodes, comprising: a power converter converting an input power into a first power according to a preset first conversion scheme and converting the input power into a second power according to a second conversion scheme set to be different to the first conversion scheme; a first driver receiving the first power from the power converter to perform a preset first operation; a second driver receiving the second power from the power converter to perform a preset second operation; a feedback unit having a first feedback unit feeding back a detection signal from the first driver and a second feedback unit feeding back a detection signal from the second driver; and a power conversion controller controlling a power conversion switching frequency of the first power of the power converter in response to the detection signal from the feedback unit, and controlling a duty of the second power of the power converter synchronized with the power conversion switching frequency, the first driver being a first light emitting diode (LED) driver receiving the first power to drive LEDs.