The driving method of constant power LED driver is same as the principle of constant current mode drivers. Except that, the maximum power of a general constant current LED driver will only be fixed at a single output voltage and output current. The constant power LED driver adopts a wide range of output voltage and current Design. Wide range of fixed maximum output power range, provide flexible and efficient LED voltage and current configuration, optimized size and inventory. As shown in the figure, the output voltage and current in between 232V/2800mA and 185.6V/3500mA can produce maximum output power of 650W.