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

- Journal title : Journal of Power Electronics
- Volume 15, Issue 6, 2015, pp.1480-1488
- Publisher : The Korean Institute of Power Electronics
- DOI : 10.6113/JPE.2015.15.6.1480

Title & Authors

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;

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

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);

Language

English

Cited by

References

1.

M. Jabbari, “Unified analysis of switched-resonator converters,” IEEE Trans. Power Electron., Vol. 26, No. 5, pp. 1364-1376, May 2011.

2.

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.

3.

M. Jabbari and H. Farzanehfard, “New resonant step-down/up converters,” IEEE Trans. Power Electron., Vol. 25, No. 1, pp. 249-256, Jan. 2010.

4.

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.

5.

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.

6.

M. Ilic and D. Maksimovic, “Interleaved zero-current-transition buck converter,” IEEE Trans. Ind. Appl., Vol. 43, No.6, pp. 1619-1627, Nov. 2007.

7.

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.

8.

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.

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.

10.

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.

11.

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.

12.

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.

13.

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.

14.

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.

15.

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.

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.