A system comprising: • rectifier circuitry adapted to receive an AC power signal and provide a rectified signal (S R); and • main control circuitry adapted to provide a first drive current control signal (I CONT) and a second drive current control signal (I CONT); • characterized in that the system comprises: • first converter circuitry (78 R) separate from the main control circuitry, the first converter circuitry adapted to convert the rectified signal into a first voltage for a first string of LEDs (52 R), receive the first drive current control signal from the main control circuitry, provide a first sense signal (I SENSE) to the main control circuitry, and provide a first drive current for the first string of LEDs based on the first drive current control signal; and • second converter circuitry (78 BSX) separate from the main control circuitry, the second converter circuitry adapted to convert the rectified signal into a second voltage for a second string of LEDs (52 BSX), receive the second drive current control signal from the main control circuitry, provide a second sense signal (I SENSE) to the main control circuitry, and provide a second drive current for the second string of LEDs based on the second drive current control signal, wherein the first drive current control signal is independent from the second drive current control signal. • rectifier circuitry adapted to receive an AC power signal and provide a rectified signal (S R); and • main control circuitry adapted to provide a first drive current control signal (I CONT) and a second drive current control signal (I CONT); • characterized in that the system comprises: • first converter circuitry (78 R) separate from the main control circuitry, the first converter circuitry adapted to convert the rectified signal into a first voltage for a first string of LEDs (52 R), receive the first drive current control signal from the main control circuitry, provide a first sense signal (I SENSE) to the main control circuitry, and provide a first drive current for the first string of LEDs based on the first drive current control signal; and • second converter circuitry (78 BSX) separate from the main control circuitry, the second converter circuitry adapted to convert the rectified signal into a second voltage for a second string of LEDs (52 BSX), receive the second drive current control signal from the main control circuitry, provide a second sense signal (I SENSE) to the main control circuitry, and provide a second drive current for the second string of LEDs based on the second drive current control signal, wherein the first drive current control signal is independent from the second drive current control signal. • first converter circuitry (78 R) separate from the main control circuitry, the first converter circuitry adapted to convert the rectified signal into a first voltage for a first string of LEDs (52 R), receive the first drive current control signal from the main control circuitry, provide a first sense signal (I SENSE) to the main control circuitry, and provide a first drive current for the first string of LEDs based on the first drive current control signal; and • second converter circuitry (78 BSX) separate from the main control circuitry, the second converter circuitry adapted to convert the rectified signal into a second voltage for a second string of LEDs (52 BSX), receive the second drive current control signal from the main control circuitry, provide a second sense signal (I SENSE) to the main control circuitry, and provide a second drive current for the second string of LEDs based on the second drive current control signal, wherein the first drive current control signal is independent from the second drive current control signal.