AC analysis of Dc/DC resonant converters

The authors introduce some extensions to R.L. Steigenwald´s (1988) classical AC analysis of resonant DC/DC power converters. These include applications to third-order systems and one class of zero voltage switching (ZVS) converters. Based on analog filter theory, one can explain why the third-order counterparts of the series resonant converter and parallel resonant converter possess improved characteristics. Gain sensitivity is introduced as a performance index for comparing performance characteristic features. It is shown that at least one other class of ZVS converter can be analyzed by using an extension to this approach