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Sliding-mode control of interleaved boost converters

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4 Author(s)
R. Giral ; Dept. d''Enginyeria Electron., Electr. i Autom., Univ. Rovira i Virgili, Tarragona, Spain ; L. Martinez-Salamero ; R. Leyva ; J. Maixe

Boost topologies in interleaved operation under sliding-mode control are analyzed in this paper. First, the interleaving connection of two identical boost converters results in a new step-up structure whose closed-loop dynamics are asymptotically stable with good start-up and excellent load regulation when a self-oscillating sliding-mode control is applied to the converter. For a duty cycle of 50%, the new regulator acts as a small-ripple voltage doubler. Later, an extension of the voltage doubler yields a voltage quadrupler with similar dynamic characteristics. Simulated and experimental results verify the theoretical predictions.

Published in:

IEEE Transactions on Circuits and Systems I: Fundamental Theory and Applications  (Volume:47 ,  Issue: 9 )