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A Simple Structure of Zero-Voltage Switching (ZVS) and Zero-Current Switching (ZCS) Buck Converter with Coupled Inductor

Wei, Xinxin;Luo, Ciyong;Nan, Hang;Wang, Yinghao

  • Received : 2015.03.12
  • Accepted : 2015.06.20
  • Published : 2015.11.20

Abstract

In this paper, a revolutionary buck converter is proposed with soft-switching technology, which is realized by a coupled inductor. Both zero-voltage switching (ZVS) of main switch and zero-current switching (ZCS) of freewheeling diode are achieved at turn on and turn off without using any auxiliary circuits by the resonance between the parasitic capacitor and the coupled inductor. Furthermore, the peak voltages of the main switch and the peak current of the freewheeling diode are significantly reduced by the coupled inductor. As a result, the proposed converter has the advantages of simple circuit, convenient control, low consumption and so on. The detailed operation principles and steady-state analysis of the proposed ZVS-ZCS buck converter are presented, and detailed power loss analysis and some simulation results are also included. Finally, experimental results based on a 200-W prototype are provided to verify the theory and design of the proposed converter.

Keywords

Buck converter;Coupled inductor;Soft switching;Zero-current switching (ZCS);Zero-voltage switching (ZVS)

References

  1. E. Adib and H. Farzanehfard, “Family of zero-current transition PWM converters,” IEEE Trans. Ind. Electron., Vol. 55, No. 8, pp. 3055-3063, Aug. 2008. https://doi.org/10.1109/TIE.2008.922597
  2. M. Jabbari and H. Farzanehfard, “New resonant step-down/up converters,” IEEE Trans. Power Electron., Vol. 25, No. 1, pp. 249-256, Jan. 2010. https://doi.org/10.1109/TPEL.2009.2028734
  3. I. Aksoy, H. Bodur and A. F. Bakan, “A new ZVT-ZCT-PWM DC-DC converter,” IEEE Trans. Power Electron., Vol. 25, No. 8, pp. 2093-2105, Aug. 2011. https://doi.org/10.1109/TPEL.2010.2043266
  4. M. Jabbari, “Unified analysis of switched-resonator converters,” IEEE Trans. Power Electron., Vol. 26, No. 5, pp. 1364-1376, May 2011. https://doi.org/10.1109/TPEL.2010.2079954
  5. H.-L. Do, “Zero-voltage-switching synchronous buck converter with a coupled inductor,” IEEE Trans. Ind. Electron., Vol. 58, No. 8, pp. 3440- 3447, Aug. 2011. https://doi.org/10.1109/TIE.2010.2084973
  6. W. Yu, J.-S. Lai, and S.-Y. Park, “An improved zero-voltage switching inverter using two coupled magnetics in one resonant pole,” IEEE Trans. Power Electron., Vol. 25, No. 4, pp. 952-961, Apr. 2010. https://doi.org/10.1109/TPEL.2009.2030197
  7. C.-Y. Chiang and C.-L. Chen, “Zero-voltage-switching control for a PWM buck converter under DCM/CCM boundary,” IEEE Trans. Power Electron., Vol. 24, No. 9, pp. 2120-2126, Sep. 2009. https://doi.org/10.1109/TPEL.2009.2021186
  8. M. R. Amini and H. Farzanehfard, “Switched resonator DC/DC converter with a single switch and small inductors,” IET Power Electron., Vol. 7, No. 6, pp. 1331-1339, Jan. 2014. https://doi.org/10.1049/iet-pel.2013.0178
  9. P. Das and G. Moschopoulos, “A comparative study of zero-current transition PWM converters,” IEEE Trans. Ind. Electron., Vol. 54, No. 3, pp. 1319-1328, Mar. 2007. https://doi.org/10.1109/TIE.2007.891663
  10. S. Pattnaik, A. K. Panda and K. K. Mahapatra, “Efficiency Improvement of Synchronous Buck Converter by Passive Auxiliary Circuit,” IEEE Trans. Ind. Electron., Vol. 46, No. 6, pp. 2511-2517, Nov. 2010.
  11. A. Emrani and H. Farzanehfard, “Zero-current switching resonant buck converters with small inductors,” IET Power Electron., Vol. 5, No. 6, pp. 710-718, Jul. 2012. https://doi.org/10.1049/iet-pel.2011.0095
  12. M. Ilic and D. Maksimovic, “Interleaved zero-current-transition buck converter,” IEEE Trans. Ind. Appl., Vol. 43, No.6, pp. 1619-1627, Nov. 2007. https://doi.org/10.1109/TIA.2007.908175
  13. S. Urgun, “Zero-voltage transition-zero-current transition pulse width modulation DC-DC buck converter with zero-voltage switching zero-current switching auxiliary circuit,” IET Power Electron., Vol. 5, No. 5, pp. 627-634, May 2012. https://doi.org/10.1049/iet-pel.2011.0304
  14. J. J. Lee and B. H. Kwon, “DC-DC converter using a multiple-coupled inductor for low output voltages,” IEEE Trans. Ind. Electron., Vol. 54, No. 1, pp. 467-478, Feb. 2007. https://doi.org/10.1109/TIE.2006.888799
  15. J.-H. Park and B.-H. Cho, “Nonisolation soft-switching buck converter with tapped-inductor for wide-input extreme step-down applications,” IEEE Trans. Circ. and Sys., Vol. 54, No. 8, pp. 1809-1818, Aug. 2007. https://doi.org/10.1109/TCSI.2007.902482
  16. M. R. Amini and H. Farzanehfard, “Novel family of PWM soft-single-switched DC-DC converters with coupled inductors,” IEEE Trans. Ind. Electron., Vol. 56, No. 6, pp. 2108-2114, Jun. 2009. https://doi.org/10.1109/TIE.2009.2016509
  17. Lei Jiang, C. C. Mi, Li Siqi, Yin Chengliang and Li Jinchuan, “An improved soft-switching buck converter with coupled inductor,” IEEE Trans. Power Electron., Vol. 28, No. 11, pp. 4885- 4891, Nov. 2013. https://doi.org/10.1109/TPEL.2013.2242488
  18. Y. Berkovich and B. Axelrod, “Switched-coupled inductor cell for DC- DC converters with very large conversion ratio,” IET Power Electron., Vol. 4, No. 3, pp. 309-315, Mar. 2011. https://doi.org/10.1049/iet-pel.2009.0341

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