TY - GEN
T1 - A resonant LED driver with capacitive power transfer
AU - Shmilovitz, Doron
AU - Ozeri, Shaul
AU - Ehsani, Mehrdad Mark
PY - 2014
Y1 - 2014
N2 - A quasi resonant topology suitable for LED drivers, featuring power factor correction and dimming in a single stage is presented. It contains a single active switch, and operates in zero-voltage-switching, zero-current-switching. This topology includes neither electrolytic capacitors nor transformer, and provides galvanic isolation between the AC mains and the DC side. Building on this new topology, a 15 W, 30 V, LED string driver with a typical operation frequency of 200 kHz was designed and experimented. Experimental results fully support the theoretical analysis and the simulation results. Measured efficiency exceeds 90% in the entire operation range and reached a peak efficiency of 96%. The driver is dimmable through the switching frequency. Dimming in the range of 4W-19W is demonstrated experimentally.
AB - A quasi resonant topology suitable for LED drivers, featuring power factor correction and dimming in a single stage is presented. It contains a single active switch, and operates in zero-voltage-switching, zero-current-switching. This topology includes neither electrolytic capacitors nor transformer, and provides galvanic isolation between the AC mains and the DC side. Building on this new topology, a 15 W, 30 V, LED string driver with a typical operation frequency of 200 kHz was designed and experimented. Experimental results fully support the theoretical analysis and the simulation results. Measured efficiency exceeds 90% in the entire operation range and reached a peak efficiency of 96%. The driver is dimmable through the switching frequency. Dimming in the range of 4W-19W is demonstrated experimentally.
UR - http://www.scopus.com/inward/record.url?scp=84900393109&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/APEC.2014.6803487
DO - https://doi.org/10.1109/APEC.2014.6803487
M3 - منشور من مؤتمر
SN - 9781479923250
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1384
EP - 1387
BT - APEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Y2 - 16 March 2014 through 20 March 2014
ER -