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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.17 No.6
- 발행연도
- 2017.12
- 수록면
- 750 - 764 (15page)
- DOI
- 10.5573/JSTS.2017.17.6.750
이용수
초록· 키워드
오류제보하기
A dimmable and power-compensated AC direct LED driver for lighting application is presented. A Source-Coupled Pair (SCP) is adopted to realize the soft self-commutating. To maximize the power efficiency, a multi-dimensional optimization method is applied for finding the optimum number of LEDs in each string. Moreover, error analysis for efficiency is introduced to evaluate the impact of circuit mismatches on efficiency. The driver includes a Power Compensation module which enables the LEDs power approximately constant under various AC line voltages. In addition, a low frequency pulse-width modulation (LFPWM) dimming technique is designed to regulate the LED’s brightness. The LED driver IC is designed and implemented in CSMC 700 V 1 um BCD process. The post-layout simulation results show that the system can achieve a high efficiency of 90.2% under typical condition and 220 V|rms, meanwhile realize dimming with a 90% duty cycle, 10 kHz dimming signal. With the proposed compensation scheme, the output power only changes less than 5% under 20% variation in input voltage.
목차
Abstract
I. INTRODUCTION
II. PROPOSED LED DRIVER
III. CIRCUIT IMPLEMENTATION
IV. POST-LAYOUT SIMULATION RESULTS
V. CONCLUSIONS
REFERENCES
참고문헌 (19)
참고문헌 신청
Pimputkar, Siddha, et al. Prospects for LED lighting. Nature Photonics 3.4 (2009): 180-182.
Z. Liu and H. Lee, A 26 W 97%-Efficiency Fast- Settling Dimmable LED Driver With Dual-nMOSSensing Based Glitch-Tolerant Synchronous Current Control for High-Brightness Solid-State Lighting Applications, in IEEE Journal of Solid- State Circuits, vol. 50, no. 9, pp. 2174-2187, Sept. 2015.
J. T. Hwang, M. S. Jung, D. H. Kim, J. H. Lee, M. H. Jung and J. H. Shin, Off-the-Line Primary Side Regulation LED Lamp Driver With Single-Stage PFC and TRIAC Dimming Using LED Forward Voltage and Duty Variation Tracking Control, in IEEE Journal of Solid-State Circuits, vol. 47, no. 12, pp. 3081-3094, Dec. 2012.
Y. P. Su et al., Inductorless and electrolytic capacitorless pseudo-sine current controller in LED lighting system with 1.1W/2.2W power reduction, 2012 Proceedings of the ESSCIRC (ESSCIRC), Bordeaux, 2012, pp. 442-445.
J. Kim, J. Lee and S. Park, A soft selfcommutating method using minimum control circuitry for multiple-string LED drivers, 2013 IEEE International Solid-State Circuits Conference Digest of Technical Papers, San Francisco, CA, 2013, pp. 376-377.
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