A multi-channel power supply system includes a power supply circuit configured to generate a drive signal for powering a plurality of color channels based on an input power signal, a first current control circuit coupled to a first color channel of the plurality of color channels and configured to adjust a first channel current of the first color channel based on the drive signal and a first reference signal, and to generate a feedback signal to control the drive signal of the power supply circuit, and a channel controller configured generate the first reference signal based on a color temperature according to a black body curve.