Proceedings of the 2012 International Symposium on Nonlinear Theory and its Applications


Session Number:C2L-A



Chaos controller for switching regulators aiming enhanced design-space towards miniaturization

E. Rodriguez,  A. El Aroudi,  H. Martinez,  A. Poveda,  H. Iu,  E. Alarcon,  


Publication Date:

Online ISSN:2188-5079


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This paper tackles the control of fast-scale instabilities in a buck switching power converter aiming to expand its design-space towards miniaturization. After briefly revisiting the working principle of existing chaos controllers, the paper explores an alternative approach based on amplifying the harmonic at the switching frequency. Numerical simulations show that the proposed controller can concurrently improve both fast-scale and slow-scale stability margins. Finally, the paper proposes a chaos controller combined with an output ripple reduction network and studies their interaction with the aim of achieving both low-ripple and improved stability.


[1] Rodriguez, A. E. Aroudi, F. Guinjoan, and E. Alarcon, “A ripple-based design-oriented approach for predicting fast-scale instability in DC-DC switching power supplies,” IEEE Transactions on Circuits and Systens I: Regular Papers, vol. 59, pp. 215-227, 2012.

[2] K. Pyragas, “Continuous control of chaos by selfcontrolling feedback,” Physics Letters A, vol. 170, pp. 421-428, 1992.

[3] E. Rodriguez, E. Alarcn, H. Iu, and A. El Aroudi, “A frequency domain approach for controlling chaos in switching converters,” in IEEE International Symposium on Circuits and Systems (ISCAS’10), 2010, pp. 2928-2931.

[4] G. Villar and E. Alarcon, “Monolithic integration of a 3-level DCM-operated low-floating-capacitor buck converter for DC-DC step-down donversion in standard CMOS,” in IEEE Power Electronics Specialists Conference (PESC’08), 2008, pp. 4229-4235.

[5] E. Alarcon, G. Villar, S. Ferrandez, F. Guinjoan, and A. Poveda, “Ripple-reduction tuned filtering switching power converter topology,” in IEEE Power Electronics Specialists Conference (PESC’04), 2004.

[6] G. Escobar, P. Martinez, J. Leyva-Ramos, and P. Mattavelli, “A negative feedback repetitive control scheme for harmonic compensation,” IEEE Transactions on Industrial Electronics, vol. 53, no. 4, pp. 1383 -1386, 2006.

[7] M. di Bernardo and F. Vasca, “Discrete-time maps for the analysis of bifurcations and chaos in DC/DC converters,” IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications, vol. 47, no. 2, pp. 130-143, 2000.

[8] A. El Aroudi, M. Debbat, L. Giral, G. Olivar, L. Benadero, and E. Toribio, “Bifurcations in DC-DC swithching converters: reivew of methods and applications,” International Journal of Bifurcation and Chaos, vol. 15, no. 5, pp. 1549-1578, 2005.