An efficient integrated electronic ballast for compact fluorescent lamps

In this paper a single-stage high-power-factor high-efficiency electronic ballast for compact fluorescent lamps is presented. The proposed topology use two voltage sources connected in series to feed the inverter that ballasting the lamp, one of them consists in the rectified line voltage and the other is a flyback converter operating in DCM. In this way the flyback converter processes a lower energy than the nominal power of the lamp. The proposed topology presents simplicity, high-power-factor, low current crest factor and high efficiency.