In this section
@article{Guo:2016:10.1109/TPEL.2015.2496247,
author = {Guo, Y and Li, S and Lee, ATL and Tan, S-C and Lee, CK and Hui, SYR},
doi = {10.1109/TPEL.2015.2496247},
journal = {IEEE Transactions on Power Electronics},
pages = {5837--5850},
title = {Single-Stage AC/DC Single-Inductor Multiple-Output LED Drivers},
url = {http://dx.doi.org/10.1109/TPEL.2015.2496247},
volume = {31},
year = {2016}
}
TY - JOUR
AB - Various ac/dc LED driver topologies have been proposed to meet the challenges of achieving a compact, efficient, low-cost, and robust multistring LED lighting system. These LED drivers typically employ a two-stage topology to realize the functions of ac/dc rectification and independent current control of each LED string. The choice of having two stage conversions involves additional hardware components and a more complicated controller design process. Such two-stage topologies suffer from a higher system cost, increased power loss, and large form factor. In this paper, a single-stage ac/dc single-inductor multiple-output LED driver is proposed. It uses only one single inductor and N + 1 active power switches (N being the number of LED strings) with reduced component count and smaller form factor. The proposed driver can achieve both functions of ac/dc rectification with a high power factor and precise independent current control of each individual LED string simultaneously. A prototype of an ac/dc single-inductor triple-output LED driver is constructed for verification. Experimental results corroborate that precise and independent current regulation of each individual LED string is achievable with the proposed driver. A power factor of above 0.99 and a peak efficiency of 89% at 30-W rated output power are attainable.
AU - Guo,Y
AU - Li,S
AU - Lee,ATL
AU - Tan,S-C
AU - Lee,CK
AU - Hui,SYR
DO - 10.1109/TPEL.2015.2496247
EP - 5850
PY - 2016///
SN - 1941-0107
SP - 5837
TI - Single-Stage AC/DC Single-Inductor Multiple-Output LED Drivers
T2 - IEEE Transactions on Power Electronics
UR - http://dx.doi.org/10.1109/TPEL.2015.2496247
UR - http://hdl.handle.net/10044/1/38905
VL - 31
ER -