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Analyzes the synchronous commutations in switching converters. Definition of zero-order and first-order master-slave connection matrix; Inclusion of feedback circuitry and soft-switching cells; Reduced circuit for the analysis of resistive linear networks.

Discusses the steady-state analysis of soft-switching converters. Break-and-cut strategy for interval contraction; Analysis of commutations by means of compensation theorem; Algorithm for accelerated steady-state analysis.

Discusses a study which presented an approach to the calculation of the true worst case in circuit tolerance analysis (TWC-CTA) with parameters characterized by large uncertainties. Calculation of the inner solution in TWC-CTA problems using genetic algorithms; Calculation of the outer solution in TWC-CTA problems using affine arithmetic; Examples.

Deals with a study which presented an approach for improving the efficiency and accuracy of interval arithmetic based on worst case circuit tolerance analysis (TA). Formulation of the problem; Discussion on large-change and small-change TA; Methods for solving TA problems; Interval arithmetic in TA problems; Evolution program for uncertainty interval partitioning optimization; Conclusions.