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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.9
- 수록면
- 1,661 - 1,668 (8page)
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초록· 키워드
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A fixed off-time controlled high power factor ac-dc LED driver is proposed in this paper, which employs a novel zero-crossing-compensation (ZCC) circuit based on a fixed off-time controlled scheme. Due to the parasitic parameters of the system, the practical waveforms have a dead region. By detecting the zero-crossing boundary, the proposed ZCC circuit compensates the control signal V<SUB>COMP</SUB> within the dead region, and is invalid above this region. With further optimization of the parameters K<SUB>R</SUB> and K<SUB>τ</SUB> of the ZCC circuit, the dead zone can be eliminated and lower THD is achieved. Finally, the chip is implemented in HHNEC 0.5㎛ 5V/40V HVCMOS process, and a prototype circuit, delivering 7~12W of power to several 3-W LED loads, is tested under AC input voltage ranging from 85V to 265V. The test results indicate that the average total harmonic distortion (THD) of the entire system is approximately 10%, with a minimum of 5.5%, and that the power factor is above 0.955, with a maximum of 0.999.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. FIXED OFF-TIME CONTROLLED SYSTEM
Ⅲ. ZERO-CROSSING COMPENSATION ANALYSIS
Ⅳ. EXPERIMENT RESULTS
Ⅴ. CONCLUSION
REFERENCE
참고문헌 (13)
참고문헌 신청
[학술지(정기간행물)] - M. S. Shur / 2005 / Solid-state lighting : Toward superior illumination / Proceedings of the IEEE 93 (10) : 1691 ~ 1703
[학술대회논문] - M. Wendt / 2006 / LEDs in real lighting applications : From niche markets to general lighting / Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting : 2601 ~ 2603
[학술지(정기간행물)] - S. Muthu / 2002 / Red, green, and blue LEDs for white light illumination / IEEE J. Sel. Topics Quantum Electron 8 (2) : 333 ~ 338
[학술지(정기간행물)] - X. Wu / 2012 / Variable on-time(VOT)-controlled critical conduction mode buck pfc converter for high-input AC/DC HB-LED lighting applications / IEEE Trans. Power Electron 27 (11) : 4530 ~ 4539
[학술지(정기간행물)] - J. Sun / 2004 / On the zero-crossing distortion in single-phase PFC converters / IEEE Trans. Power Electron 19 (3) : 685 ~ 692
[학술대회논문] - M. Wendt / 2006 / LEDs in real lighting applications : From niche markets to general lighting / Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting : 2601 ~ 2603
[학술지(정기간행물)] - S. Muthu / 2002 / Red, green, and blue LEDs for white light illumination / IEEE J. Sel. Topics Quantum Electron 8 (2) : 333 ~ 338
[학술지(정기간행물)] - X. Wu / 2012 / Variable on-time(VOT)-controlled critical conduction mode buck pfc converter for high-input AC/DC HB-LED lighting applications / IEEE Trans. Power Electron 27 (11) : 4530 ~ 4539
[학술지(정기간행물)] - J. Sun / 2004 / On the zero-crossing distortion in single-phase PFC converters / IEEE Trans. Power Electron 19 (3) : 685 ~ 692
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UCI(KEPA) : I410-ECN-0101-2017-560-001109717