Abstract

In this paper, one AC light-emitting diode (LED) driver with high power factor (PF) and low total harmonic distortion (THD) is adopted, which is added with the proposed switched LED module and is controlled based on the field-programmable gate array (FPGA). By doing so, the efficiency of such an AC LED driver can be improved significantly. This switched LED module is constructed by several LED strings, which have individual series-connected MOSFET switches. As the switch of the switched LED module is turned on, the corresponding LED string is short-circuited and hence is not conducted, whereas as the switch of the switched LED module is turned off, the corresponding LED string is conducted due to the redundant input voltage across this LED string. Therefore, the redundant input voltage across between the collector and emitter of the BJT current source can be reduced, that is, the unwanted power dissipation in the BJT current source can be decreased, so as to upgrade the efficiency of the overall system.

© 2013 IEEE

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  1. X. Qu, S. C. Wong, C. K. Tse, "Color control system for RGB LED light sources using junction temperature measurement," Proc. IEEE IECON (2007) pp. 1363-1368.
  2. J.-P. M. G. Linnartz, L. Feri, H. Yang, S. B. Colak, T. C. W. Schenk, "Communications and sensing of illumination contributions in a power LED lighting system," Proc. IEEE ICC (2008) pp. 5396-5400.
  3. D. Feezell, J. S. Speck, S. P. DenBaars, S. Nakamura, "Semipolar $(20^{-}2^{-}1)$ InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting," J. Display Technol. 9, 190-198 (2013).
  4. H. P. Zhao, G. Y. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, N. Tansu, "Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells," Opt. Exp. 19, A991-A1007 (2011).
  5. J. Zhang, N. Tansu, "Optical gain and laser characteristics of InGaN quantum wells on ternary InGaN substrates," IEEE Photon. J. 5, (2013) Art. 2600111.
  6. Y. K. Ee, J. M. Biser, W. Cao, H. M. Chan, R. P. Vinci, N. Tansu, "Metalorganic vapor phase epitaxy of III-Nitride light-emitting diodes on nano-patterned AGOG sapphire substrate by abbreviated growth mode," IEEE J. Sel. Topics Quantum Electron. 15, 1066-1072 (2009).
  7. R. M. Farrell, E. C. Young, F. Wu, S. P. DenBaars, J. S. Speck, "Material and growth issues for high-performance nonpolar and semipolar light-emitting devices," Semicond. Sci. Technol. 27, (2012) Art. ID 024001.
  8. G. Y. Liu, J. Zhang, C. K. Tan, N. Tansu, "Efficiency-droop suppression by using large-bandgap AlGaInN thin barrier layers in InGaN quantum wells light-emitting diodes," IEEE Photon. J. 5, (2013) Art. ID 2201011.
  9. H. J. Kim, S. Choi, S. S. Kim, J. H. Ryou, P. D. Yoder, R. D. Dupuis, A. M. Fischer, K. W. Sun, F. A. Ponce, "Improvement of quantum efficiency by employing active-layer-friendly lattice-matched InAlN electron blocking layer in green light-emitting diodes," Appl. Phys. Lett. 96, (2010) Art. ID 101102.
  10. C. K. Tan, J. Zhang, X. H. Li, G. Y. Liu, B. O. Tayo, N. Tansu, "First-principle electronic properties of dilute-AsGaNAs Alloy for visible light emitters," J. Display Technol. 9, 272-279 (2013).
  11. W.-Y. Choi, J.-Y. Choi, J.-S. Yoo, "Single stage bridgeless three-level AC/DC converter with current doubler rectifier," Proc. IEEE ICPE (2011) pp. 2704-2708.
  12. K. I. Hwu, Y. T. Yau, L.-L. Lee, "Powering LED using high-effciency SR flyback converter," IEEE Trans. Ind. Appl. 46, 376-386 (2011).
  13. D. Gacio, J. M. Alonso, A. J. Calleja, "A universal-input single-stage high-power-factor power supply for HB-LEDs based on integrated buck-flyback converter," IEEE Trans. Ind. Electron. 58, 589-599 (2011).
  14. S.-J. Cheng, Y.-C. Yan, C.-C. Chuang, H.-J. Chiu, Y.-K. Lo, "A single-stage high efficiency high power factor LED driver," Proc. IEEE VPPC (2009) pp. 1416-1420.
  15. F. Zhang, L. Xiao, Y. Yan, "Bi-directional forward-flyback DC-DC converter," Proc. IEEE PESC (2004) pp. 4058-4061.
  16. R.-L. Lin, C.-R. Pan, K.-H. Liu, "Family of single-inductor multi-output DC-DC converters," Proc. IEEE PEDS (2010) pp. 1216-1221.
  17. S. Pattnaik, A. K. Panda, K. K. Mahapatra, "Analysis of a novel improved soft switching PWM DC-DC converter with dead time control," Proc. IEEE TENCON (2008) pp. 1-6.
  18. W. Yu, J.-S. Lai, "High efficiency DC-DC converter with twin-bus for dimmable LED lighting," Proc. IEEE ECCE (2010) pp. 457-462.
  19. H. van der Broeck, G. Sauerlander, M. Wendt, "Power driver topologies and control schemes for LEDs," Proc. IEEE APEX (2007) pp. 1319-1325.
  20. B. Wang, X. Ruan, K. Yao, M. Xu, "A method of reducing the peak-to-average ratio of LED current for electrolytic capacitor-less AC-DC drivers," IEEE Trans. Power Electron. 25, 592-601 (2010).
  21. H. Chang, Y.-S. Lai, "Novel AC driver and protection circuits with dimming control for light emitting diodes," Proc. IEEE IAS (2007) pp. 0197-2618.
  22. C.-L. Kuo, T.-J. Liang, K.-H. Chen, J.-F. Chen, "Design and implementation of high frequency AC-LED driver with digital dimming," Proc. IEEE ISCAS (2010) pp. 3713-3716.
  23. W. Feng, Y. He, F. G. Shi, "Packaging and AC powering of LED array," Proc. IEEE ECTC (2010) pp. 512-514.
  24. F.-L. Jenq, Y.-C. Pu, Z.-C. Weng, "An AC LED smart lighting system with white light FSO communication," Proc. IEEE 3CA (2010) pp. 488-491.
  25. K. I. Hwu, W. C. Tu, "Dimmable driver for light-emitting diode with total harmonic distortion improved," IET Power Electron. 5, 59-67 (2011).
  26. K. I. Hwu, Y. T. Yau, "Applying a counter-based PWM control scheme to an FPGA-based SR forward converter," Proc. IEEE APEC (2006) pp. 1396-1400.

2013

J. Zhang, N. Tansu, "Optical gain and laser characteristics of InGaN quantum wells on ternary InGaN substrates," IEEE Photon. J. 5, (2013) Art. 2600111.

G. Y. Liu, J. Zhang, C. K. Tan, N. Tansu, "Efficiency-droop suppression by using large-bandgap AlGaInN thin barrier layers in InGaN quantum wells light-emitting diodes," IEEE Photon. J. 5, (2013) Art. ID 2201011.

D. Feezell, J. S. Speck, S. P. DenBaars, S. Nakamura, "Semipolar $(20^{-}2^{-}1)$ InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting," J. Display Technol. 9, 190-198 (2013).

C. K. Tan, J. Zhang, X. H. Li, G. Y. Liu, B. O. Tayo, N. Tansu, "First-principle electronic properties of dilute-AsGaNAs Alloy for visible light emitters," J. Display Technol. 9, 272-279 (2013).

2012

R. M. Farrell, E. C. Young, F. Wu, S. P. DenBaars, J. S. Speck, "Material and growth issues for high-performance nonpolar and semipolar light-emitting devices," Semicond. Sci. Technol. 27, (2012) Art. ID 024001.

2011

H. P. Zhao, G. Y. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, N. Tansu, "Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells," Opt. Exp. 19, A991-A1007 (2011).

K. I. Hwu, Y. T. Yau, L.-L. Lee, "Powering LED using high-effciency SR flyback converter," IEEE Trans. Ind. Appl. 46, 376-386 (2011).

D. Gacio, J. M. Alonso, A. J. Calleja, "A universal-input single-stage high-power-factor power supply for HB-LEDs based on integrated buck-flyback converter," IEEE Trans. Ind. Electron. 58, 589-599 (2011).

K. I. Hwu, W. C. Tu, "Dimmable driver for light-emitting diode with total harmonic distortion improved," IET Power Electron. 5, 59-67 (2011).

2010

B. Wang, X. Ruan, K. Yao, M. Xu, "A method of reducing the peak-to-average ratio of LED current for electrolytic capacitor-less AC-DC drivers," IEEE Trans. Power Electron. 25, 592-601 (2010).

H. J. Kim, S. Choi, S. S. Kim, J. H. Ryou, P. D. Yoder, R. D. Dupuis, A. M. Fischer, K. W. Sun, F. A. Ponce, "Improvement of quantum efficiency by employing active-layer-friendly lattice-matched InAlN electron blocking layer in green light-emitting diodes," Appl. Phys. Lett. 96, (2010) Art. ID 101102.

2009

Y. K. Ee, J. M. Biser, W. Cao, H. M. Chan, R. P. Vinci, N. Tansu, "Metalorganic vapor phase epitaxy of III-Nitride light-emitting diodes on nano-patterned AGOG sapphire substrate by abbreviated growth mode," IEEE J. Sel. Topics Quantum Electron. 15, 1066-1072 (2009).

Appl. Phys. Lett.

H. J. Kim, S. Choi, S. S. Kim, J. H. Ryou, P. D. Yoder, R. D. Dupuis, A. M. Fischer, K. W. Sun, F. A. Ponce, "Improvement of quantum efficiency by employing active-layer-friendly lattice-matched InAlN electron blocking layer in green light-emitting diodes," Appl. Phys. Lett. 96, (2010) Art. ID 101102.

IEEE J. Sel. Topics Quantum Electron.

Y. K. Ee, J. M. Biser, W. Cao, H. M. Chan, R. P. Vinci, N. Tansu, "Metalorganic vapor phase epitaxy of III-Nitride light-emitting diodes on nano-patterned AGOG sapphire substrate by abbreviated growth mode," IEEE J. Sel. Topics Quantum Electron. 15, 1066-1072 (2009).

IEEE Photon. J.

J. Zhang, N. Tansu, "Optical gain and laser characteristics of InGaN quantum wells on ternary InGaN substrates," IEEE Photon. J. 5, (2013) Art. 2600111.

G. Y. Liu, J. Zhang, C. K. Tan, N. Tansu, "Efficiency-droop suppression by using large-bandgap AlGaInN thin barrier layers in InGaN quantum wells light-emitting diodes," IEEE Photon. J. 5, (2013) Art. ID 2201011.

IEEE Trans. Ind. Appl.

K. I. Hwu, Y. T. Yau, L.-L. Lee, "Powering LED using high-effciency SR flyback converter," IEEE Trans. Ind. Appl. 46, 376-386 (2011).

IEEE Trans. Ind. Electron.

D. Gacio, J. M. Alonso, A. J. Calleja, "A universal-input single-stage high-power-factor power supply for HB-LEDs based on integrated buck-flyback converter," IEEE Trans. Ind. Electron. 58, 589-599 (2011).

IEEE Trans. Power Electron.

B. Wang, X. Ruan, K. Yao, M. Xu, "A method of reducing the peak-to-average ratio of LED current for electrolytic capacitor-less AC-DC drivers," IEEE Trans. Power Electron. 25, 592-601 (2010).

IET Power Electron.

K. I. Hwu, W. C. Tu, "Dimmable driver for light-emitting diode with total harmonic distortion improved," IET Power Electron. 5, 59-67 (2011).

J. Display Technol.

Opt. Exp.

H. P. Zhao, G. Y. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, N. Tansu, "Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells," Opt. Exp. 19, A991-A1007 (2011).

Semicond. Sci. Technol.

R. M. Farrell, E. C. Young, F. Wu, S. P. DenBaars, J. S. Speck, "Material and growth issues for high-performance nonpolar and semipolar light-emitting devices," Semicond. Sci. Technol. 27, (2012) Art. ID 024001.

Other

X. Qu, S. C. Wong, C. K. Tse, "Color control system for RGB LED light sources using junction temperature measurement," Proc. IEEE IECON (2007) pp. 1363-1368.

J.-P. M. G. Linnartz, L. Feri, H. Yang, S. B. Colak, T. C. W. Schenk, "Communications and sensing of illumination contributions in a power LED lighting system," Proc. IEEE ICC (2008) pp. 5396-5400.

W.-Y. Choi, J.-Y. Choi, J.-S. Yoo, "Single stage bridgeless three-level AC/DC converter with current doubler rectifier," Proc. IEEE ICPE (2011) pp. 2704-2708.

K. I. Hwu, Y. T. Yau, "Applying a counter-based PWM control scheme to an FPGA-based SR forward converter," Proc. IEEE APEC (2006) pp. 1396-1400.

H. Chang, Y.-S. Lai, "Novel AC driver and protection circuits with dimming control for light emitting diodes," Proc. IEEE IAS (2007) pp. 0197-2618.

C.-L. Kuo, T.-J. Liang, K.-H. Chen, J.-F. Chen, "Design and implementation of high frequency AC-LED driver with digital dimming," Proc. IEEE ISCAS (2010) pp. 3713-3716.

W. Feng, Y. He, F. G. Shi, "Packaging and AC powering of LED array," Proc. IEEE ECTC (2010) pp. 512-514.

F.-L. Jenq, Y.-C. Pu, Z.-C. Weng, "An AC LED smart lighting system with white light FSO communication," Proc. IEEE 3CA (2010) pp. 488-491.

S.-J. Cheng, Y.-C. Yan, C.-C. Chuang, H.-J. Chiu, Y.-K. Lo, "A single-stage high efficiency high power factor LED driver," Proc. IEEE VPPC (2009) pp. 1416-1420.

F. Zhang, L. Xiao, Y. Yan, "Bi-directional forward-flyback DC-DC converter," Proc. IEEE PESC (2004) pp. 4058-4061.

R.-L. Lin, C.-R. Pan, K.-H. Liu, "Family of single-inductor multi-output DC-DC converters," Proc. IEEE PEDS (2010) pp. 1216-1221.

S. Pattnaik, A. K. Panda, K. K. Mahapatra, "Analysis of a novel improved soft switching PWM DC-DC converter with dead time control," Proc. IEEE TENCON (2008) pp. 1-6.

W. Yu, J.-S. Lai, "High efficiency DC-DC converter with twin-bus for dimmable LED lighting," Proc. IEEE ECCE (2010) pp. 457-462.

H. van der Broeck, G. Sauerlander, M. Wendt, "Power driver topologies and control schemes for LEDs," Proc. IEEE APEX (2007) pp. 1319-1325.

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