Title :
A high efficiency multi-channel LED driver based on converter-free technique and load adaptive method
Author :
Si Fu ; Minjie Chen ; Xutao Lee ; Yoshihara, Tsutomu
Author_Institution :
Grad. Sch. of Inf., Production & Syst., Waseda Univ., Fukuoka, Japan
Abstract :
A novel high efficiency multi-channel LED using a soft self-commutating technique and load adaptive method is presented in this paper. Directly powered by a AC voltage, for a soft switching method, the proposed circuit can implement a higher efficiency as well as a lower total harmonic distortion (THD) and avoid some thorny problem such as EMI and EMC noise during hard commutations with self-commutating structure and adaptive load network. By utilizing the converter-free technique, this work can be fabricated into a BCDMOS process technology without using any inductors and capacitors. The proposed circuit is designed and simulated based on PSpice Model. The maximum output current and the efficiency for LED achieve 1.28A and 89.1% under 1KHz 220V/AC condition.
Keywords :
AC-LED lamps; CMOS integrated circuits; AC voltage; BCDMOS process technology; PSpice model; THD; converter-free technique; current 1.28 A; hard commutations; high efficiency multichannel LED driver; load adaptive method; soft self-commutating technique; soft switching method; total harmonic distortion; voltage 220 V; Adaptation models; Electromagnetic compatibility; Electromagnetic interference; IEEE Lasers and Electro-Optics Society; Integrated circuit modeling; BCDMOS; adaptive load network; converter-free; high efficiency; multi-channel; self-commutating;
Conference_Titel :
SoC Design Conference (ISOCC), 2014 International
DOI :
10.1109/ISOCC.2014.7087585
