TY - GEN
T1 - AC/DC converter free LED driver for lightings
AU - Cha, Sanghyun
AU - Park, Deukhee
AU - Lee, Yuenjoong
AU - Lee, Changseok
AU - Choi, Joongho
AU - Lee, Jaeshin
AU - Lee, Hyobum
PY - 2012
Y1 - 2012
N2 - This paper presents a noble AC/DC converter-free LED driver for LED lighting applications. The presented LED driver applies the AC mains power directly to the LED strings with no AC/DC converter stage, thus bulky transformer and life-time limiting electrolytic capacitor no longer needed. This small-sized, low-cost and reliable LED lighting driver was realized with an LED driver IC, which selectively empowers multi-channel LED strings based on the measured input AC voltage signal. The IC was fabricated in 1-um high voltage BCD process capable of handling AC input voltage up to 240 V. By PWM-controlling the LED-driving high-voltage switches, the IC resolved the thermal issue which is critical for the reliability of LED lighting module. A 4-W prototype LED driver module was implemented and tested to verify the feasibility of the suggested Converter-/Capacitor-less (ie. CC-less) LED driver scheme for low cost LED lighting.
AB - This paper presents a noble AC/DC converter-free LED driver for LED lighting applications. The presented LED driver applies the AC mains power directly to the LED strings with no AC/DC converter stage, thus bulky transformer and life-time limiting electrolytic capacitor no longer needed. This small-sized, low-cost and reliable LED lighting driver was realized with an LED driver IC, which selectively empowers multi-channel LED strings based on the measured input AC voltage signal. The IC was fabricated in 1-um high voltage BCD process capable of handling AC input voltage up to 240 V. By PWM-controlling the LED-driving high-voltage switches, the IC resolved the thermal issue which is critical for the reliability of LED lighting module. A 4-W prototype LED driver module was implemented and tested to verify the feasibility of the suggested Converter-/Capacitor-less (ie. CC-less) LED driver scheme for low cost LED lighting.
UR - http://www.scopus.com/inward/record.url?scp=84863344523&partnerID=8YFLogxK
U2 - 10.1109/ICCE.2012.6162049
DO - 10.1109/ICCE.2012.6162049
M3 - Conference contribution
AN - SCOPUS:84863344523
SN - 9781457702310
T3 - Digest of Technical Papers - IEEE International Conference on Consumer Electronics
SP - 706
EP - 708
BT - 2012 IEEE International Conference on Consumer Electronics, ICCE 2012
T2 - 2012 IEEE International Conference on Consumer Electronics, ICCE 2012
Y2 - 13 January 2012 through 16 January 2012
ER -