Dynamic Current Sharing in Multiphase Active-Clamping Converters

The high output impedance of active clamp buck and boost converters have been tested as a good method to achieve steady state current sharing among several power stages working in parallel. Nevertheless, dynamic current sharing among paralleled or interleaved phases must be ensured. In this work, the current share dynamic performance of this lossless passive equalization method is studied. Simulation and experimental results of three parallel buck converters, and three parallel power factor boost converters are presented in order to verify the theoretical approach reported in this paper.