CURRENT DEVIATION MINIMIZING CONTROLL METHOD BETWEEN CHANELS IN MULTI CHANNEL LED LIGHTING UNIT

摘要

According to an embodiment of the present invention, a control method for minimizing the current difference between channels in a multi-channel LED lighting device includes: a power supply step (a) of supplying power by an external power source; a voltage detection step (b) of detecting the voltages of a first channel and a second channel as well as a working voltage of the LED lighting device generated by the power supplied in the power supply step (a); a working voltage increase step (c) of increasing the working voltage when the first and second channel voltages detected in the voltage detection step (b) are lower than a reference voltage operating the LED lighting device; a working voltage fixing step (d) of fixing the working voltage when the first and second channel voltages detected in the voltage detection step (b) are equal to or higher than the reference voltage; and a channel voltage adjusting step (e) of comparing the first and second channel voltages after the working voltage fixing step (d) and decreasing the higher channel voltage when one of the channel voltages is higher than the other.