Instability and chaos in a current-mode controlled Cuk converter

Abstract

Instability and chaos in a current-mode controlled Cuk converter is studied. The analysis begins with the derivation of a fourth-order iterative map that describes the dynamic operation of the circuit. Using this map, instability pertaining to current-mode control is shown to be related to a route to chaos similar to that from a tent-map. Computer simulations based on an exact piece-wise switched model and experimental measurements confirm the predicted phenomena.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>