지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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This paper presents an active current regulator for LED driver IC. The proposed driver circuit is consists of DC-DC converter for supplying constant DC voltage to LED, active current regulator for compensating channel-to-channel current error from LED strings and feedback circuit for controlling duty ratio of the converter. The proposed active current regulator senses current of LED channels by equalizing both VDS and VGS at LED current control transistor. Because the proposed circuit directly measures the LED channel current without a sensing resistor and regulates all channel with same regulation loop, the power consumption and the current error are much small compared with previous works. The measured maximum efficiency of overall LED driver IC is approximately 94% and current error of LED channel-to-channel is under ±1.3%. The proposed LED driver IC is fabricated Dongbu 0.35um BCD process.
목차
Abstract
1. 서론
2. 본론
3. 결론
감사의 글
참고문헌
저자소개
참고문헌 (9)
참고문헌 신청
1. [학술대회논문] - Y. Hu / 2011 / A New Current-Balancing Method for Paralleled LED Strings / IEEE Applied Power Electronics Conference and Exposition(APEC) : 705 ~ 712
2. [학술대회논문] - H. Mu / 2011 / A High Precision Constant Current Source Applied in LED Driver / Symposium on Photonics and Optoelectronics : 1 ~ 4
3. [학술지(정기간행물)] - Y. Hu / 2008 / LED Driver with Self-Adaptive Drive Voltage / IEEE Transactions on Power Electronics 23 (6) : 3116 ~ 3125
4. [학술대회논문] - M. Doshi / 2007 / Digital Architecture for Driving Large LED Arrays with Dynamic Bus Voltage Regulation and Phase Shifted PWM / IEEE Applied Power Electronics Conference(APEC) : 287 ~ 293
5. [학술대회논문] - E. C. Kang / 2009 / A New Low Voltage Detecting Method for Multi-String LED BLU Circuit / European Conference on Power Electronics and Applications(EPE ‘09)
2. [학술대회논문] - H. Mu / 2011 / A High Precision Constant Current Source Applied in LED Driver / Symposium on Photonics and Optoelectronics : 1 ~ 4
3. [학술지(정기간행물)] - Y. Hu / 2008 / LED Driver with Self-Adaptive Drive Voltage / IEEE Transactions on Power Electronics 23 (6) : 3116 ~ 3125
4. [학술대회논문] - M. Doshi / 2007 / Digital Architecture for Driving Large LED Arrays with Dynamic Bus Voltage Regulation and Phase Shifted PWM / IEEE Applied Power Electronics Conference(APEC) : 287 ~ 293
5. [학술대회논문] - E. C. Kang / 2009 / A New Low Voltage Detecting Method for Multi-String LED BLU Circuit / European Conference on Power Electronics and Applications(EPE ‘09)
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UCI(KEPA) : I410-ECN-0101-2013-560-001701277