A new current-balancing method for paralleled LED strings

Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Volumn , Issue , 2011, Pages 705-712

  Hu, Yuequan ^a   Jovanovic, Milan M ^a  

^a DELTA PRODUCTS CORPORATION   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CURRENT BALANCING; DC SOURCES; DIMMING METHOD; DRIVING CURRENT; DUTY CYCLES; HIGH FREQUENCY SIGNALS; SERIES-CONNECTED SWITCHES;

DC POWER TRANSMISSION; HIGH FREQUENCY TRANSFORMERS; POWER ELECTRONICS;

LIGHT EMITTING DIODES;

EID: 79955772304     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1109/APEC.2011.5744673     Document Type: Conference Paper

References (18)

1. M. Doshi and R. Zane, "Digital architecture for driving large LED arrays with dynamic bus voltage regulation and phase shifted PWM," IEEE Applied Power Electronics Conference (APEC) Proc., pp. 287-293, Feb. 2007.
2. th International Conference on Power Electronics and Drive Systems (PEDS'07), pp. 1613-1617, Nov. 2007.
3. C. L. Chiu and K. H. Chen, "A high accuracy current-balanced control technique for LED backlight," Power Electronics Specialists Conference (PESC'08), pp. 4202-4206, June 2008.
4. C. Y. Wu, T. F. Wu, J. R. Tsai, Y. M. Chen, and C. C. Chen, "Multistring LED backlight driving system for LCD panels with color sequential display and area control," IEEE Transactions on Industrial Electronics, vol.55, no.10, pp.3791-3800, Oct. 2008.
5. Y. Hu and M. M. Jovanovic, "LED driver with self-adaptive drive voltage," IEEE Transactions on Power Electronics, vol. 23, no. 6, pp. 3116-3125, Nov. 2008.
6. E. C. Kang, D. Kwon, J. E. Yeon, D. S. Kim and W. Oh, "A new low voltage detecting method for multi-string LED BLU circuit," European Conference on Power Electronics and Applications (EPE '09), Sept. 8-10, 2009.
7. H. J. Chiu, Y. K. Lo, J. T. Chen, S. J. Cheng, C. Y. Lin, and S. C. Mou, "A high-efficiency dimmable LED driver for low-power lighting applications," IEEE Transactions on Industrial Electronics, vol.57, no.2, pp.735-743, Feb. 2010.
8. M. Doshi and R. Zane, "Control of solid-state lamps using a multiphase pulsewidth modulation technique," IEEE Transactions on Power Electronics, vol.25, no.7, pp.1894-1904, July 2010.
9. S. M. Baddela and D. S. Zinger, "Parallel connected LEDs operated at high frequency to improve current sharing," Proc. IEEE IAS'04, pp. 1677-1681, 2004.
10. C.C. Chen, C. Y. Wu, and T. F. Wu, "Fast transition current-type burst-mode dimming control for the LED backlight driving system of LCD TV," IEEE Power Electronics Specialists Conference (PESC) Proc., pp. 1-7, June 18-22, 2006.
11. th European Conference on Power Electronics and Applications (EPE '09), Sept. 8-10, 2009.
12. K. I. Hwu and Y. T. Yau, "Applying one-comparator counter-based sampling to current sharing control of multi-channel LED strings," IEEE Applied Power Electronics Conference (APEC) Proc., pp. 737-742, Feb. 21-25, 2010.
13. S. Choi, P. Agarwal, T. Kim, J. Yang, and B. Han, "Symmetric current balancing circuit for multiple DC loads," IEEE Applied Power Electronics Conference (APEC) Proc., pp. 512-518, Feb. 21-25, 2010.
14. C. T. Huang, S. J. Yan, C. C. Cheng, and P. Y. Lee, "Power supply circuit with current sharing for driving multiple sets of dc loads," US Pat. Appl. No. 2009/0195169, Aug. 6, 2010.
15. S. S. Hong, S. H. Lee, S. H. Cho, C. W. Roh, and S. K. Han, "A new cost-effective current-balancing multi-channel LED driver for a large screen LCD backlight units," Journal of Power Electronics, vol. 10, no. 4, pp.351-356, 2010.
16. K. I. Hwu, and S. C. Chou, "A simple current-balancing converter for LED lighting," IEEE Applied Power Electronics Conference (APEC) Proc., pp. 587-590, Feb. 2009.
17. X. Jin, "Balancing transformers for ring balancer," US Pat. 7,294971, Nov. 13, 2007.
18. C. D. Wey, Y. Y. Yu, H. J. Li and Y. P, Lee, "Balanced circuit for multi-LED driver," US Pat. 7,358,684, April 15, 2008.