TY - GEN
T1 - A current ripple cancellation circuit for electrolytic capacitor-less AC-DC LED driver
AU - Lee, Kuan Wen
AU - Hsieh, Yi Hsun
AU - Liang, Tsorng Juu
PY - 2013
Y1 - 2013
N2 - This paper presents a bidirectional buck-boost current ripple cancellation circuit applied to electrolytic capacitor-less flyback LED driver with power factor correction (PFC). By operating the flyback converter in discontinuous conduction mode (DCM), high power factor can be obtained under universal input voltage range. The bidirectional buck-boost converter can minimize the twice-line-frequency output current ripple using simple open-loop pulse width modulation (PWM) control without complex control scheme, and modularization is possible for other types of converter at the PFC stage. The output current ripple can be significantly reduced without using electrolytic capacitors (E-Cap) and the power factor is near unity under universal input voltage. Finally, a 700 mA / 20 W hardware prototype is built to verify the feasibility of the proposed method.
AB - This paper presents a bidirectional buck-boost current ripple cancellation circuit applied to electrolytic capacitor-less flyback LED driver with power factor correction (PFC). By operating the flyback converter in discontinuous conduction mode (DCM), high power factor can be obtained under universal input voltage range. The bidirectional buck-boost converter can minimize the twice-line-frequency output current ripple using simple open-loop pulse width modulation (PWM) control without complex control scheme, and modularization is possible for other types of converter at the PFC stage. The output current ripple can be significantly reduced without using electrolytic capacitors (E-Cap) and the power factor is near unity under universal input voltage. Finally, a 700 mA / 20 W hardware prototype is built to verify the feasibility of the proposed method.
UR - http://www.scopus.com/inward/record.url?scp=84879341965&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879341965&partnerID=8YFLogxK
U2 - 10.1109/APEC.2013.6520430
DO - 10.1109/APEC.2013.6520430
M3 - Conference contribution
AN - SCOPUS:84879341965
SN - 9781467343541
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 1058
EP - 1061
BT - 2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
T2 - 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Y2 - 17 March 2013 through 21 March 2013
ER -