Soft-Switching Buck PFC Converter for a High-Efficiency AC-DC LED Driver


(*) Corresponding author


Authors' affiliations


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


In this paper, a soft-switching buck power-factor-correction (PFC) converter for a high-efficiency AC-DC light-emitting-diode (LED) driver is proposed. By replacing a freewheeling diode with a self-driven synchronous rectifier (SR), efficiency improvement is achieved due to the reduced conduction loss on the SR. In addition, there is no switching loss on switching devices because zero-voltage-switching (ZVS) operations of both switches are easily performed. Since the SR is self-driven without an additional control circuit, the proposed converter has competitive price. In order to verify efficiency improvement of the proposed converter, it is compared with a conventional critical-conduction-mode (CRM) buck PFC converter. The efficiency of the proposed converter is measured maximum 95.61% at 170 [Vac] and improved maximum 0.23% at 240 [Vac]. For verifying soft-switching and efficiency improvement of the proposed converter, theoretical analysis, design consideration, and experimental results from a 48 [V] and 1.4 [A] prototype for a high-efficiency LED driver are presented.
Copyright © 2013 Praise Worthy Prize - All rights reserved.

Keywords


Buck Converter; Power-Factor-Correction (PFC); Zero-Voltage-Switching (ZVS); Synchronous Rectifier; LED Driver

Full Text:

PDF


References


Chao, K.H., Lee, R.H., Yen, K.L., Design of a hybrid power fed-converter and time controller for LED traffic light systems, (2011) International Review of Electrical Engineering (IREE), 6 (3), pp. 1086-1093.

M. Arias, D. G. Lamar, F. F. Linera, D. Balocco, A. A. Diallo, and j. Sebastian, “Design of a Soft-Switching Asymmetrical Half-Bridge Converter as Second Stage of an LED Driver for Street Lighting Application,” IEEE Trans. Power Electron., vol. 27, no. 3, pp. 1608-1621, Mar. 2012.

S. Saponara, G. Pasetti, N. Costantino, F. Tinfena, P. D. Abramo, and L. Fanucci, “A Flexible LED Driver for Automotive Lighting Applications: IC Design and Experimental Characterization,” IEEE Trans. Power Electron., vol. 27, no. 3, pp. 1071-1075, Mar. 2012.

Y.-T. Hsieh, B.-D. Liu, J.-F. Wu, C.-L. Fang, H.-H. Tsai, and Y.-Z. Juang, “A High-Dimming-Ratio LED Driver for LCD Backlights,” IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4562-4570, Nov. 2012.

S.-J. Choi and T.-H. Kim, “Symmetric Current-Balancing Circuit for LED Backlight With Dimming,” IEEE Trans. Ind. Electron., vol. 59, no. 4, pp. 1698-1707, Apr. 2012.

S. Y. Hui, S. N. Li, X. H. Tao, W. Chen, and W. M. Ng, “A Novel Passive Offline LED Driver With Long Lifetime,” IEEE Trans. Power Electron., vol. 25, no. 10, pp. 2665-2672, Oct. 2010.

Y.-C. Li and C.-L. Chen, “A Novel Primary-Side Regulation Scheme for Single-Stage High-Power-Factor AC-DC LED Driving Circuit,” IEEE Trans. Ind. Electron., vol. 60, no. 11, pp. 4978-4986, Nov. 2013.

C. Zhao, X. Xie, and S. Liu, “Multioutput LED Drivers With Precise Passive Current Balancing,” IEEE Trans. Power Electron., vol. 28, no. 3, pp. 1438-1448, Mar. 2013.

H.-L. Cheng, Y.-C. Hsieh, and C.-S. Lin, “A Novel Single-Stage High-Power-Factor AC/DC Converter Featuring High Circuit Efficiency,” IEEE Trans. Ind. Electron., vol. 58, no. 2, 524-532, Feb. 2011.

Y.-T. Huang, Y.-T. Chen, Y.-H. Liu, H.-C. Hsiao, and W.-T. Tsai, “Compact-Size and High-Conversion-Efficiency Regulator for Alternating-Current-Operated Light-Emitting Diodes,” IEEE Trans. Ind. Electron., vol. 58, no. 9, pp. 4130-4135, Sep. 2011.

D. G. Lamar, M. Arias, A. Rodriguez, A. Fernandez, M. M. Hernando, and J. Sebastian, “Design-Oriented Analysis and Performance Evaluation of a Low-Cost High-Brightness LED Driver Based on Flyback Power Factor Corrector,” IEEE Trans. Ind. Electron., vol. 60, no. 7, pp. 2614-2626, July 2013.

S.-C. Moon, G.-B. Koo, and G.-W. Moon, “A New Control Method of Interleaved Single-Stage Flyback AC-DC Converter for Outdoor LED Lighting Systems,” IEEE Trans. Power Electron., vol. 28, no. 8, pp. 4051-4062, Aug. 2013.

X. Xie, J. Wang, C. Zhao, Q. Lu, and S. Liu, “A Novel Output Current Estimation and Regulation Circuit for Primary Side Controlled High Power Factor Single-Stage Flyback LED Driver,” IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4602-4612, Nov. 2012.

H.-H. Chou, Y.-S. Hwang, and J.-J. Chen, “An Adaptive Output Current Estimation Circuit for a Primary-Side Controlled LED Driver,” IEEE Trans. Power Electron., vol. 28, no. 10, pp. 4811-4819, Oct. 2013.

X. Xie, C. Zhao, L. Zheng, and S. Liu, “An Improved Buck PFC Converter With High Power Factor,” IEEE Trans. Power Electron., vol. 28, no. 5, pp. 2277-2284, May 2013.

H.-S. Choi, “Interleaved Boundary Conduction Mode (BCM) Buck Power Factor Correction (PFC) Converter,” IEEE Trans. Power Electron., vol. 28, no. 6, pp. 2629-2634, June 2013.

J. M. Alonso, J. Vina, D. g. Vaquero, G. Martinez, and R. Osorio, “Analysis and Design of the Integrated Double Buck-Boost Converter as a High-Power-Factor Driver for Power-LED Lamps,” IEEE Trans. Ind. Electron., vol. 59, no. 4, pp. 1689-1697, Apr. 2012.

A. Abramovitz and K. M. Smedley, “Analysis and Design of a Tapped-Inductor Buck-Boost PFC Rectifier With Low Bus Voltage,” IEEE Trans. Power Electron., vol. 26, no. 9, pp. 2637-2649, Sep. 2011.

Lin, B.-R., Chiang, H.-K., Wu, R.-S., Analysis and implementation of a Double buck-boost converter with power factor correction, (2010) International Review of Electrical Engineering (IREE), 5 (6), pp. 2586-2592.

Z. Wang, S. Wang, P. Kong, and F. C. Lee, “DM EMI Noise Prediction for Constant On-Time, Critical Mode Power Factor Correction Converters,” IEEE Trans. Power Electron., vol. 27, no. 7, pp. 3150-3157, July 2012.

X. Wu, J. Yang, J. Zhang, and Z. Qian, “Variable On-Time (VOT)- Controlled Critical Conduction Mode Buck PFC Converter for High-Input AC/DC HB-LED Lighting Applications,” IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4530-4539, Nov. 2012.

M. Marvi and A. F.-Ahmady, “A Fully ZVS Critical Conduction Mode Boost PFC,” IEEE Trans. Power Electron., vol. 27, no. 4, pp. 1958-1965, Apr. 2012.

Lin, B.R., Huang, S.C., High power factor interleaved buck AC/DC converter with boundary conduction mode, (2011) International Review of Electrical Engineering (IREE), 6 (5), pp. 2079-2087.

J. Zhang, J. Wang, G. Zhang, and Z. Qian, “A Hybrid Driving Scheme for Full-Bridge Synchronous Rectifier in LLC Resonant Converter,” IEEE Trans. Power Electron., vol. 27, no. 11, pp. 4549-4561, Nov. 2012.

J.-P. Park, Y.-S. Roh, Y.-J. Moon, and C.-S. Yoo, “A CCM/DCM Dual-Mode Synchronous Rectification Controller for a High-Efficiency Flyback Converter,” IEEE Trans. Power Electron., vol. 29, no. 2, pp. 768-774, Feb. 2014.

K. I. Hwu, Y. T. Yau, and L.-L. Lee, “Powering LED Using High- Efficiency SR Flyback Converter,” IEEE Trans. Industry App., vol. 47, no. 1, pp. 376-386, Jan./Feb. 2011.

Taheri, M., Milimonfared, J., Daryabak, M., Analysis, design and implementation of a new ZVS interleaved asymmetrical half-bridge converter using synchronous rectifier, (2010) International Review of Electrical Engineering (IREE), 5 (4), pp. 1381-1389.


Refbacks

  • There are currently no refbacks.


Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2024 Praise Worthy Prize