STEVAL-ILL041V1, Demonstration Board using L6564 power factor controller in an unconventional circuit, step-down switching

STEVAL-ILL041V1, Demonstration Board implements an LED driver that meets the present requirements for the US market. The STEVAL-ILL041V1 utilizes ST's L6564 power factor controller in an unconventional circuit to regulate the input power to a step-down switching regulator. The circuit also compensates for variations in LED voltage drop, to maintain the average output current in a tight band over a wide range of line voltage and LED characteristics