Pulse Skipping Modulated Buck Converter - Modeling and Simulation

Ramamurthy Srinivasan, Vanaja Ranjan P.

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DOI: 10.4236/cs.2010.12010                

Abstract

Modeling and simulation results of a pulse skipping modulated buck converter for applications involving a source with widely varying voltage conditions with loads requiring constant voltage from full load down to no load is presented. The pulses applied to the switch are blocked or released on output voltage crossing a predetermined value. The regulator worked satisfactorily over a wide input voltage range with good transient response but with higher ripple content. Input current spectrum indicates a good EMI performance with crowding of components at audio frequency range for the se-lected switching frequency.

Keywords

DC/DC Converter, Pulse Skipping Modulation, Buck Regulator, Modulation Factor,

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	R. W. Erickson and D. Maksimovic, “Fundamentals of Power Electronics,” 2nd Edition, Kluwer Academic Pub lishers, Dordrecht.
[2]	A. J. Forsyth and S. V. Mollow, “Modelling and Control of DCDC Converters,” IEE Power Engineering Journal, Vol. 12, No. 5, October 1998, pp. 229236.
[3]	J. G. Kassakian, M. F. Schlecht and G. C. Verghese, “Principles of Power Electronics,” AddisonWesley, Reading, June 1992.
[4]	B. Arbetter, R. Erickson and D. Maksimovic, “DCDC Converter Design for BatteryOperated Systems,” IEEE PESC’95. Vol. 1, June 1995, pp. 103109.
[5]	A. J. Stratakos, S. R. Sanders and R. W. Broderson, “A LowVoltage CMOS dc–dc Converter for a Portable BatteryOperated System,” Proceedings of Power Elec tronics Specialists Conference, Vol. 1, June 1994, pp. 619626.
[6]	G. Y. Wei and M. Horowitz, “A Fully Digital, Energy Efficient Adaptive PowerSupply Regulator,” IEEE Journal of SolidState Circuits, Vol. 35, April 2000, pp. 520528.
[7]	A. P. Dancy, R. Amirtharajah and A. P. Chandrakasan, “HighEfficiency MultipleOutput dc–dc Conversion for LowVoltage Systems,” IEEE Transactions on VLSI, Vol. 8, June 2000, pp. 252263.
[8]	A. V. Peterchev and S. R. Sanders, “Digital Loss – Minimizing MultiMode Synchronous Buck Converter Control,” 35th Annual IEEE Power Electronics Specia lists Conference, pp. 36943699
[9]	S. Pattnaik, A. K. Panda, K. Aroul and K. K. Mahapatra, “A Novel Zero Voltage Transition Synchronous Buck Converter for Portable Application,” International Jour nal of Electrical, Computer, and Systems Engineering, Vol. 2, No. 2, 2008, pp. 115120.
[10]	A. Consoli, F. Gennaro, C. Cavallaro and A. Testa, “A Comparative Study of Different Buck Topologies for HighEfficiency LowVoltage Applications,” Proceed ings on Power Power Electronics Specialist Conference, 1999, pp. 6065.
[11]	D. Calafut, “Trench Power MOSFET Lowside Switch with Optimized Integrated Schottky Diode,” Proceedings of the 16th International Symposium on Power Semicon ductor Devices and ICs (ISPSD’04), 2427 May 2004, pp. 397400.
[12]	K. M. Smith and K. M. Smedly, “A Comparison of VoltageMode Soft Switching Methods for PWM Converters,” IEEE Transactions on Power Electronics, Vol. 12, No. 2, 1997, pp. 376386.
[13]	X. W. Zhou, M. Donati, L. Amoroso and F. C. Lee, “Improved LightLoad Efficiency for Synchronous Rec tifier Voltage Regulator Module,” IEEE Transactions on Power Electronics, Vol. 15, No. 5, September 2000, pp. 826834.
[14]	C.L. Chen, W.L. Hsieh, W.J. L. K.H. Chen and C.S. Wang, “A New PWM/PFM Control Technique for Improving Efficiency over Wide Load Range,” 15th IEEE International Conference on Electronics, Circuits and Systems, Malta, 2008, pp. 962965.
[15]	P. Luo, L. Y. Luo, Z. J. Li, et al., “Skip Cycle Modulation in Switching DCDC Converter,” Interna tional Conference on Communications, Circuits, and Systems, Chengdu, June 2002, pp. 17161719.
[16]	P. Luo, B. Zhang, S.P. Wang and F. Yong, “Modeling and Analysis of Pulse Skip Modulation,” Journal of Electronic Science and Technology of China (Chinese), Vol. 4, No. 1, March 2006.
[17]	A. Farhadi and A. Jalilian, “Modeling, Simulation and Reduction Techniques of Electromagnetic Conducted Emission Due to Operation of Power Electronic Conver ters,” International Conference on Renewable Energy and Power Quality (ICREPQ’07), Sevilla, March 2007.
[18]	F. Lin and D. Y. Chen, “Reduction of Power Supply EMI Emission by Switching Frequency Modulation,” IEEE Transactions on Power Electronics, Vol. 9, No. 1, January 1994, pp. 132137.