TY - GEN
T1 - Multiple-output dimmable LED driver with flyback converter
AU - Hsu, Li An
AU - Liang, Tsorng Juu
AU - Tseng, Wei Jing
AU - Lin, Yu Meng
PY - 2018/4/25
Y1 - 2018/4/25
N2 - In this paper, a multiple-output dimmable LED driver with flyback converter is designed and implemented. The sequences and conducting times of red (R), green (G), and blue (B) control switches are determined by the voltage level from the primary-side digital signal processor. The flyback converter with primary-side control is operated in quasi-resonant mode, frequency limitation with the valley switching mode, and frequency reduction mode according to the dimming level and input voltage conditions. Finally, a 20 W flyback LED driver for red (24.5 V/ 0.2 A), green (36.8 V/ 0.2 A), and blue (37.5 V/ 0.2 A) LED outputs with the universal input voltages 90-264 Vrms is designed and implemented. The dimming range for each output can be varied from 5 %-100 %. The line regulation for 5 %-100 % dimming level of RGB outputs is within 7 %. The maximum errors for the non-dimming (100 % dimming) and dimming conditions are 2.9 mA and 3.6 mA, respectively. The highest system efficiency at full load condition is 85.54 %.
AB - In this paper, a multiple-output dimmable LED driver with flyback converter is designed and implemented. The sequences and conducting times of red (R), green (G), and blue (B) control switches are determined by the voltage level from the primary-side digital signal processor. The flyback converter with primary-side control is operated in quasi-resonant mode, frequency limitation with the valley switching mode, and frequency reduction mode according to the dimming level and input voltage conditions. Finally, a 20 W flyback LED driver for red (24.5 V/ 0.2 A), green (36.8 V/ 0.2 A), and blue (37.5 V/ 0.2 A) LED outputs with the universal input voltages 90-264 Vrms is designed and implemented. The dimming range for each output can be varied from 5 %-100 %. The line regulation for 5 %-100 % dimming level of RGB outputs is within 7 %. The maximum errors for the non-dimming (100 % dimming) and dimming conditions are 2.9 mA and 3.6 mA, respectively. The highest system efficiency at full load condition is 85.54 %.
UR - https://www.scopus.com/pages/publications/85048827388
UR - https://www.scopus.com/pages/publications/85048827388#tab=citedBy
U2 - 10.1109/IESES.2018.8349862
DO - 10.1109/IESES.2018.8349862
M3 - Conference contribution
AN - SCOPUS:85048827388
T3 - Proceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
SP - 134
EP - 139
BT - Proceedings - 2018 IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1st IEEE International Conference on Industrial Electronics for Sustainable Energy Systems, IESES 2018
Y2 - 30 January 2018 through 2 February 2018
ER -
