Novel half-bridge resonant converter topology realized by adjusting transformer parameters

This paper shows a new direction as to how the transformer parameters may be best utilized and presents the performance and control of novel dc/dc and ac/dc converter topologies. All three inductances of a transformer have been utilized to realize a CL3 topology having excellent characteristics and requiring no external inductor. For half-bridge topology, the capacitor used for the purpose of input voltage splitting also serves as the resonating capacitor. Thus, in the half-bridge version, the topology is realized only with a specially designed transformer and no other external components. A laboratory setup is produced and experiments conducted for dc/dc and ac/dc applications. A new design procedure and control technique for the converters are also presented. These topologies are very promising in small-power applications.