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Topologies and control of a class of single inductor multiple-output converters operating in continuous conduction mode

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4 Author(s)
L. Benadero ; Dept. de Fis. Aplic., Univ. Politec. de Catalunya, Barcelona, Spain ; V. Moreno-Font ; R. Giral ; A. El Aroudi

In this paper, continuous conduction mode (CCM) operation of a class of single inductor multiple output dc-dc converters is proposed. The power stage combines boost and buck-boost structures loading non-inverted and inverted outputs. The control strategy is based on current mode control under an interleaving scheme, in which each output is controlled by a specific channel. These channels use different dynamic references, which are obtained from a set of proportional-integral (PI) controllers associated to the voltage outputs. The dynamical behaviour of this system is described by means of a large signal averaged model and direct simulations of the switched circuit-based model. Small signal stability analysis of the slow scale dynamics is also carried out by using the averaged model. Finally, some experimental results are provided to validate the theoretical predictions and the numerical simulations.

Published in:

IET Power Electronics  (Volume:4 ,  Issue: 8 )