Digital controlled multi-light driving apparatus

Abstract

A digital controlled multi-light driving apparatus of the invention is for driving and controlling at least one AC-driven light and at least one DC-driven light. The digital controlled multi-light driving apparatus includes at least one first oscillation step-up circuit for driving the AC-driven light, at least one second oscillation step-up circuit for driving the DC-driven light; and a digital control circuit. The digital control circuit has a digital switching signal generating circuit and a multiplex feedback-control calculating circuit. The digital switching signal generating circuit connects to each of the first oscillation step-up circuit and the second oscillation step-up circuit and generates a first set of digital switching signals and a second digital switching signal respectively to the first oscillation step-up circuit and the second oscillation step-up circuit. The multiplex feedback-control calculating circuit has a control-calculating unit and an A/D converting unit. The control-calculating unit controls the digital switching signal generating circuit, and controls a phase and a duty cycle of one of the first set of the digital switching signals and the second digital switching signal generated by the digital switching signal generating circuit according to digital feedback signals from the A/D converting unit. The A/D converting unit converts feedback signals from the AC-driven light and the DC-driven light into the digital feedback signals, respectively. The first oscillation step-up circuit and the second oscillation step-up circuit are controlled according to the first set of digital switching signals and the second digital switching signal, respectively.