Sliding-mode control of interleaved boost converters

Boost topologies in interleaved operation under sliding-mode control are an alyzed in this paper, First, the interleaving connection of two identical b oost converters results in a new step-up structure whose closed-loop dynami cs are asymptotically stable with good start-up and excellent load regulati on when a selfoscillating 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 quadru plier with similar dynamic characteristics. Simulated and experimental resu lts verify the theoretical predictions.