Title :
A Novel Single-Stage High-Power-Factor AC-to-DC LED Driving Circuit With Leakage Inductance Energy Recycling
Author :
Li, Yan-Cun ; Chen, Chern-Lin
Author_Institution :
Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper proposes a novel single-stage ac-to-dc light-emitting-diode (LED) driver circuit. A buck-boost power factor (PF) corrector is integrated with a flyback converter. A recycling path is built to recover the inductive leakage energy. In this way, the presented circuit can provide not only high PF and low total harmonic distortion but also high conversion efficiency and low switching voltage spikes. Above 0.95 PF and 90% efficiency are obtained from an 8-W LED lamp driver prototype.
Keywords :
LED displays; driver circuits; harmonic distortion; power factor correction; LED lamp driver prototype; buck-boost power factor corrector; flyback converter; inductive leakage energy; leakage inductance energy recycling; light-emitting-diode driver circuit; power 8 W; recycling path; single-stage high-power-factor ac-to-dc LED driving circuit; switching voltage spikes; total harmonic distortion; Converters; Inductance; Light emitting diodes; Lighting; Reactive power; Recycling; Switches; AC-to-DC converter; energy recycling; light-emitting-diode (LED) driving circuit; power factor (PF) corrector (PFC);
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2011.2151817
