SMPS for driving 1-2 power LEDs of 1W SMPS for driving 2-4 power LEDs of 1W SMPS for driving 5-8 power LEDs of 1W SMPS for driving 8-15 power LEDs of 1W SMPS for driving 15-21 power LEDs of 1W
SMPS for driving 1-2 power LEDs of 3W SMPS for driving 3-4 power LEDs of 3W SMPS for driving 5-6 power LEDs of3W SMPS for driving 7-12 power LEDs of 3W