Power supply for driving light emitting diode

The present invention is synchronized to the frequency of one output power of the multi power output controlling switching in the multi-output power, and light emitting diode according to the driving power supply for, a LED driving of the power supply for the sake of simplicity the power conversion stage to, and in accordance with a first conversion method is set the input power to the pre-conversion into a plurality of first power source and the power conversion unit according to the second conversion method converts to a second power source, the current balance of the first power supply to the plurality and maintaining the current balancing unit which receives the current balancing the supply of the held plurality of the first power source to a plurality of the LED unit, respectively, and the LED drive section for detecting the power and current supplied to the LED unit, supplying the second power supply and the operation of performing the operation set in advance unit, and feeding back the detection signal from the LED drive unit, for feeding back a detection signal for detecting a voltage of the second power source The control of the power conversion switching frequency, the power conversion unit according to the feedback unit, and a detection signal with a second feedback unit, in synchronization with the power conversion switching frequency, characterized in that it comprises a power converter control unit for controlling the duty the conversion portion to provide an LED driving power supply device for.