Soft Switching Scheme for a Post-Regulated Current-Fed Push-Pull Converter

(*) Corresponding author

Authors' affiliations

DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)


A high-efficiency post regulation method for a zero-voltage and zero-current switching (ZVZCS) current-fed push–pull converter is presented. An auxiliary transformer is incorporated as a post regulator. An additional voltage is either added or subtracted by the regulator to the output filter of the push-pull converter. An auxiliary regulator controls this transformer and it handles only a percentage of the total output power. Therefore, compared to a normal pre-regulator, higher efficiency is obtained. Since the converter is designed for high operational frequency the size and weight of the converter can be reduced and in order to reduce the switching losses, soft switching techniques have been employed. The remarkable feature of the paper presented is that zero voltage and zero current switching is not affected in any of the working conditions.
Copyright © 2013 Praise Worthy Prize - All rights reserved.


DC-DC Isolated Converter; Post Regulator; ZVZC Switching; Push-Pull Converter

Full Text:



A. H.Weinberg and L. Ghislanzoni, A new zero voltage and zero current power switching technique, IEEE Trans. Power Electron., vol. 7, no. 4, pp. 655–665, Oct. 1992.

J. A. Carrasco, A. H. Weinberg, E. Maset, and E. J. Dede, A high efficiency regulation technique for a zero-voltage zero-current power switching converter, IEEE Trans.Power Electron., vol. 13, no. 4, pp. 739–747, Jul. 1998.

Ferreres, J. A. Carrasco, E. Maset, and J. B. Ejea, Small-signal modeling of a controlled transformer parallel regulator as a multiple output converter high efficient post-regulator, IEEE Trans. Power Electron.,vol. 19, no. 1, pp. 183–191, Jan. 2004.

S.H.Weinberg, A new high-efficiency zero-voltage, zero-current switching topology, Proc. Vacuum Electron. Conf., pp. 549–550, Apr. 2006,

M. Borage, S. Tiwari, S. Bhardwaj, and S.Kotaiah, A full-bridge DC–DC converter with zero-voltage-switching over the entire conversion range, IEEE Trans. Power Electron., vol. 23, no. 4, pp. 1743–1750, Jul. 2008.

R.-Y. Chen, T.-J. Liang, J.-F. Chen, R.-L. Lin, and K.-C. Tseng, Study and implementation of a current-fed full-bridge boost DC–DC converter with zero-current switching for high-voltage application, IEEE Trans.Ind. Appl., vol. 44, no. 4, pp. 1218–1226, Jul./Aug. 2008.

E.H. Kim and B.H. Kwon, High step-up resonant push-pull converter with high efficiency, IET Power Electron. ,Vol. 2,no. 1, pp 79–89, Jan.2009.

D. Maiti, N. Mondal, S. K. Biswas, “Design procedure of a push pull current-fed DC-DC Converter, ”NPEC, pp 1-7, 2010.

Jose M. Blanes, Ausias Garrigos, Jose A. Carrasco, Juan Ejea-Martı, and Esteban Sanchis-Kilders, High-Efficiency Regulation Method for a Zero-current and Zero-voltage Current-fed Push–pull Converter, IEEE Transactions On Power Electronics, Vol. 26, No. 2,pp. 442-452, Feb 2011.

Deepa.K, Sharika.M, Mamatha, Dr.M Vijaya Kumar, Digital Simulation of SISO-ZVS-Push pull Quasi Resonant Converter for Different Loads, International Journal of Engineering Research and Applications, Vol. 2, Issue 4, pp. 896 - 901, July-August 2012.

Deepa.K, Sharika.M, Dr. M Vijaya Kumar, Implementation of a SISO-ZVS Push-Pull Converter Fed DC Servo Motor, IEEE Fifth India International Conference on Power Electronics, Delhi Technological University, Delhi, pp 6-8, December, 2012.

Jabbari, M., Shahbazi, M., Resonant soft-switching noninverting buck-boost converter, (2012) International Review of Electrical Engineering (IREE), 7 (6), pp. 5944-5950.

Coruh, N., Urgun, S., Erfidan, T., Ozturk, S., ZVT-ZCT PWM DC-DC boost converter with ZVS-ZCS auxiliary circuit, (2012) International Review of Electrical Engineering (IREE), 7 (6), pp. 5961-5969.

Keith Billings, Switch mode Power Supply Handbook (McGraw-Hill first edition,1989)

Ned Mohan, Power Electronics, Converters Applications and Design(Wiley Publications second Edition, 1995)

L.Umanand, Power electronics essentials and applications(Wiley Publications first Edition,2009)

Abraham I. Pressman, Keith Billings, Taylor Morey, Switching Power Supply Design (McGraw-Hill third edition, 2009)

Gatto, G., Cimino, V.I., Marongiu, I., Meo, S., Perfetto, A., Interleaved ZVS active-clamped bidirectional DC-DC converter for hybrid-electric vehicles, (2011) International Review of Electrical Engineering (IREE), 6 (5), pp. 2188-2197.

Isastia, V., Meo, S., A new ZVS-CV bridgeless PFC dual boost converter for pure electric vehicle battery charger, (2011) International Review of Electrical Engineering (IREE), 6 (3), pp. 1060-1069.

Meo, S., Perfetto, A., Piegari, L., Esposito, F., A ZVS current fed dc/dc converter oriented for applications fuel-cell-based, (2004) IECON Proceedings (Industrial Electronics Conference), 1, 30th Annual Conference of the IEEE Industrial Electronics Society, November 2 - 6, 2004, Busan, Korea, art. no. TA7-71, pp. 932-937.


  • There are currently no refbacks.

Please send any question about this web site to
Copyright © 2005-2024 Praise Worthy Prize