Modeling of switch-mode dc-dc cascade converters

Abstract

Many applications of switch-mode dc-dc converters require higher conversion rates (M = V/sub out//E). An alternative solution to this problem is to use n-stages connected in cascade, such that the total conversion rate can be increased by an order of n. Ready-to-use nonlinear and linear models are given for n-buck and n-boost cascade converters in the continuous conduction mode using average model techniques; therefore, this work satisfies the need of having models for a class of dc-dc cascade converters.