Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30184
Pulse Skipping Modulated DC to DC Step Down Converter Under Discontinuous Conduction Mode

Authors: Ramamurthy S, Ranjan P V, Raghavendiran T A

Abstract:

Reduced switching loss favours Pulse Skipping Modulation mode of switching dc-to-dc converters at light loads. Under certain conditions the converter operates in discontinuous conduction mode (DCM). Inductor current starts from zero in each switching cycle as the switching frequency is constant and not adequately high. A DC-to-DC buck converter is modelled and simulated in this paper under DCM. Effect of ESR of the filter capacitor in input current frequency components is studied. The converter is studied for its operation under input voltage and load variation. The operating frequency is selected to be close to and above audio range.

Keywords: Buck converter, Discontinuous conduction mode, Electromagnetic Interference, Pulse Skipping Modulation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1081949

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 4434

References:


[1] Erickson, R. W., Maksimovic, D., Fundamentals of Power Electronics, Kluwer Academic Publishers, 2nd Edition, ISBN 0-7923-7270-0.
[2] A. J. Stratakos, S. R. Sanders, and R. W. Broderson, "A low-voltage CMOS dc-dc converter for a portable battery-operated system," in Proc. Power Electronics Specialists Conf., vol. 1, June 1994, pp. 619-626.
[3] Angkititrakul, S.; Hu, H.; "Design and analysis of buck converter with pulse-skipping modulation," Power Electronics Specialists Conference, 2008. PESC 2008. IEEE , vol., no., pp.1151-1156, 15-19 June 2008. doi: 10.1109/PESC.2008.4592085
[4] Angel V.Peterchev, Seth R.Sanders, "Digital Loss -Minimizing Multi- Mode Synchronous Buck Converter Control"35th Annual IEEE Power Electronics Specialists Conference, pp.3694-3699
[5] S. Pattnaik, A. K. Panda, Aroul K., K. K. Mahapatra, "A Novel Zero Voltage Transition Synchronous Buck Converter for Portable Application," International Journal of Electrical, Computer, and Systems Engineering, Volume 2 Number 2 pp. 115-120 Spring 2008.
[6] A. Consoli, F. Gennaro, C. Cavallaro, and A. Testa, "A comparative study of different buck topologies for high-efficiency low-voltage applications," in Proc. Power Elect. Spec. Conf., 1999, pp. 60-65.
[7] Calafut, D., "Trench power MOSFET lowside switch with optimized integrated Schottky diode," Proceedings of The 16th International Symposium on Power Semiconductor Devices and ICs, 2004. ISPSD '04., vol., no., pp. 397-400, 24-27 May 2004.
[8] K.M.Smith and K.M.Smedly, "A comparison of voltage-mode soft switching methods for PWM converters," IEEE Trans. Power Electron., vol.12, no.2, pp.376-386, Mar.1997.
[9] Xunwei Zhou, Mauro Donati, Luca Amoroso, and Fred C. Lee," Improved Light-Load Efficiency for Synchronous Rectifier Voltage Regulator Module," IEEE Transactions On Power Electronics, Vol. 15, No. 5, pp.826-834, September 2000
[10] Chi-Lin Chen Wei-Lun Hsieh Wei-Jen Lai Ke-Horng Chen and Ching-Sung Wang," A new PWM/PFM control technique for improving efficiency over wide load range, " 15th IEEE International Conference on Electronics, Circuits and Systems, 2008 pp 962-965.
[11] Luo P,Luo L Y, Li Z J et al,"Skip Cycle Modulation in Switching DCDC Converter", ICCCAS, Chengdu, China,June, 2002, 1716-1719.
[12] Luo Ping, Zhang Bo,Wang Shun-Ping, Feng Yong,"Modeling and Analysis of Pulse Skip Modulation" Journal of Electronic Science and Technology of China, March 2006, Vol 4(01).
[13] Middlebrook, R.D., ─åuk, S. A general unified approach to modeling switching-converter power stages. Int. Journal of Electronics, Vol 42, No. 6, 1977, pp. 512-550.
[14] A. Farhadi, A.Jalilian,"Modeling, Simulation and Reduction Techniques of Electromagnetic Conducted Emission Due to Operation of Power Electronic Converters", International Conference on Renewable Energy and Power Quality (ICREPQ'07), Sevilla, Spain, March 2007.W.-K. Chen, Linear Networks and Systems (Book style). Belmont, CA: Wadsworth, 1993, pp. 123-135.