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An Improved Circuit for ZVS Synchronous Buck Converter at High Frequency

T.A. Anagha, Anu Sunny


This paper proposes a modified circuit for synchronous buck converter with resonant components. This converter is modified from the basic synchronous buck converter circuit to achieve ZVS across the main switch. A detailed description of circuit is presented along with some simulation results. Simulation results are shown using MATLAB/Simulink model at 400 KHz.


Synchronous Rectifier (SR), Zero Voltage Switching (ZVS), Zero Voltage Transition (ZVT), Continuous Conduction Mode (CCM).

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Jian-Min Wang, Sen-Tung Wu, and Gwan-Chi Jane, “A Novel Control Scheme of Synchronous Buck Converter for ZVS in Light-Load Condition,” IEEE Trans. Power Electron. Vol. 26, No. 11, November 2011.

X. Zhou, M. Donati, L. Amoroso, and F. C. Lee, “Improved light-load efficiency for synchronous rectifier voltage regulator module,” IEEE Trans. Power Electron., vol. 15, no. 5, pp. 826–834, Sep. 2000.

T. A. Smith, S. Dimitrijev, and H. B. Harrison, “Controlling a dc–dc converter by using the power MOSFET as a voltage controlled resistor,” IEEE Trans. Circuits Syst., vol. 47, no. 3, pp. 357–362, Mar. 2003.

M. Siu, P. K. T. Mok, K. N. Leung, Lam, Y.-H. Lam, and K. Wing-Hung, “A voltage-mode PWM buck regulator with end-point prediction,” IEEE Trans. Circuits Syst. II, vol. 53, no. 4, pp. 294–298, Apr. 2006.

D. Maksimovic, “A MOS gate drive with resonant transitions,” in Proc. Power Electron. Spec. Conf., Jun. 1991, pp. 527–532.

H. L. N.Wiegman, “A resonant pulse gate drive for high frequency applications,”in Proc. Appl. Power Electron. Conf., Feb. 1992, pp. 738–743.

E. Adib and H. Farzanehfard, “Zero-voltage-transition PWM converters with synchronous rectifier,” IEEE Trans. Power Electron., vol. 25, no. 1, pp. 105–110, Jan. 2010.

H. Mao, O. Abdel Rahman, and I. Batarseh, “Zero-voltage-switching DC– DC converters with synchronous rectifiers,” IEEE Trans. Power Electron., vol. 23, no. 1, pp. 369–378, Jan. 2008.

Hong Mao Osama Abdel-Rahman and Issa Batarseh, “Active Resonant Tank to Achieve Zero-Voltage-Switching for Non-Isolated DC-DC Converters with Synchronous Rectifiers”.

H. Bae, J. Lee, J. Yang, and B. H. Cho, “Digital resistive current (DRC) control for the parallel interleaved DC–DC converters,” IEEE Trans. Power Electron., vol. 23, no. 5, pp. 2465–2476, Sep. 2008.

M. Barai, S. Sengupta, and J. Biswas, “Dual-mode multiple-band digital controller for high-frequency DC–DC converter,” IEEE Trans. Power Electron., vol. 24, no. 3, pp. 752–766, Mar. 2009.

S. Saggini, D. Trevisan, P. Mattavelli, and M. Ghioni, “Synchronous asynchronous digital voltage-mode control for DC–DC converters,” IEEE Trans. Power Electron., vol. 22, no. 4, pp. 1261–1268, Jul. 2007.

In-Hawn Oh,“A soft switching synchronous buck converter forzero voltage switching (ZVS) in light and full load conditions,” IEEE conf. APEC, Feb 2008.

J. Zhao, “A novel ZVS buck converter topology for VRM application”, IEEE conf. ICIEA, Beijing, June 2011.

S.Pan ,P.K. Jain “A Non linear Multi mode Control Method to improve the transient Performance of voltage regulators”

H. El Fadil, F. Giri, “Robust Control of Interleaved Synchronous PWM Buck Converters”, Proc Decision and Control Conf. New Orleans, LA, USA, Dec 2007.

S. Pattnaik, A. K. Panda, Aroul K., K. K. Mahapatra. “A Novel Zero Voltage Transition Synchronous Buck Converter for Portable Application,” World Academy of Science, Engineering and Technology International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol: 2, No:5, 2008.

Sung-Sae Lee, “Step-Down Converter with Efficient ZVS Operation with Load Variation,” IEEE Trans Ind. Electron. Vol. 61, No. 1, January 2014.

Yu Ma ,Xinke Wu,Xiaogao Xie ,Guozhu Chen ,Zhaoming Qian, “New ZVS-PWM Buck converter with an active clamping cell,’’ IEEE Conf. IECON, Taipei, Taiwan, Nov. 5-8, 2007.

Junming Zhang, Fan Zhang, Xiaogao Xie, Dezhi Jiao, and Zhaoming Qian, “A Novel ZVS DC/DC Converter for High Power Applications,” IEEE Trans. Power Electron.,Vol 19,No. 2, March 2004.

C.T.Tsai,C.L.Shen,J.C.Su, Y.C. Kuo,“Analysis and implementation of an interleaved ZVS buck converter with coupled- inductors,” IEEE conf. ICIEA, Beijing,June 2011.

Osama Abdel Rahman,J.Liu,L.Yao,“LCC Zero-Voltage Switching Buck Converter with Synchronous Rectifier ,”IEEE conf. Industry Application Society,Vol:5,Nov 2006.

D.Maksimovic, “Design of the zero voltage switching quasi square wave resonant switch,” IEEE PESC’93, Record, pp.323-329, 1993.

Y.Zhang,P.C.Sen,and Y.F.Lie, “The Zero Voltage Switching (ZVS) Buck Converter using Coupled Inductor,” IEEE Canadian Conference of Electrical and Computer Engineering(CCECE),VOL.1,pp.357-362,2001.

Kaiwei.Yao.yang.Qui.Ming.Xu, and Ferd.C.Lee, “A novel winding coupled buck converter for high frequency,high step down DC-DC conversion,” IEEE Trans. Power Electron. , Vol.20, No.5, pp.1017-1024, Sept. 2005.


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