TY - GEN
T1 - Zero ripple single stage AC-DC LED driver with unity power factor
AU - Fang, Peng
AU - White, Brian
AU - Fiorentino, Christopher
AU - Liu, Yan Fei
PY - 2013/12/31
Y1 - 2013/12/31
N2 - The single stage LED Driver can achieve relatively high efficiency, however the low frequency ripple current is too significant if high power factor has been achieved. With two stages AC-DC LED Driver structure, we can achieve high power factor and tight current regulation at the same time. However, the drawback of the two stage structure is relatively low efficiency and high component cost. In this paper, an innovative single stage LED Driver with ripple cancellation technology has been proposed. We can achieve almost as high efficiency and low component cost as single stage LED Driver while maintaining comparable performance to the two stages LED Driver. Our experimental prototype can achieve 1.5mA Pk-Pk 120Hz ripple current, 0.99 power factor and 85.5% efficiency for a universal AC input, 35W (50V-0.7A) output application.
AB - The single stage LED Driver can achieve relatively high efficiency, however the low frequency ripple current is too significant if high power factor has been achieved. With two stages AC-DC LED Driver structure, we can achieve high power factor and tight current regulation at the same time. However, the drawback of the two stage structure is relatively low efficiency and high component cost. In this paper, an innovative single stage LED Driver with ripple cancellation technology has been proposed. We can achieve almost as high efficiency and low component cost as single stage LED Driver while maintaining comparable performance to the two stages LED Driver. Our experimental prototype can achieve 1.5mA Pk-Pk 120Hz ripple current, 0.99 power factor and 85.5% efficiency for a universal AC input, 35W (50V-0.7A) output application.
UR - http://www.scopus.com/inward/record.url?scp=84891088292&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891088292&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2013.6647155
DO - 10.1109/ECCE.2013.6647155
M3 - Conference contribution
AN - SCOPUS:84891088292
SN - 9781479903351
T3 - 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
SP - 3452
EP - 3458
BT - 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
T2 - 5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013
Y2 - 15 September 2013 through 19 September 2013
ER -