TY - GEN
T1 - LED Driver Achieves Electrolytic Capacitor-Less and Flicker-Free Operation with an Energy Buffer Unit
AU - Fang, Peng
AU - Sheng, Bo
AU - Liu, Yan Fei
AU - Zhang, Yan
PY - 2018/12/3
Y1 - 2018/12/3
N2 - In this paper, a cycle-by-cycle energy buffering LED driver has been proposed to achieve electrolytic capacitor-less flicker-free operation. An energy buffering unit (EBU), with high voltage film capacitors being the energy storage device, is introduced in the design to buffer imbalanced energy in every switching cycle. The switching current can be controlled to meet high power factor correction and deliver DC LED output current at the same time. Compared to previous electrolytic capacitor-less designs, it can reduce circulating power and, therefore, also reduce power conversion loss. A 15W experimental prototype had been built and tested to verify the proposed LED driving method.
AB - In this paper, a cycle-by-cycle energy buffering LED driver has been proposed to achieve electrolytic capacitor-less flicker-free operation. An energy buffering unit (EBU), with high voltage film capacitors being the energy storage device, is introduced in the design to buffer imbalanced energy in every switching cycle. The switching current can be controlled to meet high power factor correction and deliver DC LED output current at the same time. Compared to previous electrolytic capacitor-less designs, it can reduce circulating power and, therefore, also reduce power conversion loss. A 15W experimental prototype had been built and tested to verify the proposed LED driving method.
UR - http://www.scopus.com/inward/record.url?scp=85060288547&partnerID=8YFLogxK
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U2 - 10.1109/ECCE.2018.8558053
DO - 10.1109/ECCE.2018.8558053
M3 - Conference contribution
AN - SCOPUS:85060288547
T3 - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
SP - 5109
EP - 5116
BT - 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Y2 - 23 September 2018 through 27 September 2018
ER -