Analysis of sensitivity of the performance of interleaved flyback converter to the principal design parameters

Design for optimizing the efficiency of interleaved power converters requires considering many design parameters, such as the magnetizing inductance of the transformer, switching frequency, number of parallel units and parallel semiconductors. Because of the number of parameters and the non-linear relationships among the parameters, a multidimensional design optimization is not straightforward. In this paper the sensitivity of the efficiency in dependency of the value of principal design parameters is investigated by a loss model built in Mathcad file. The results are used to find a set of parameters for optimal efficiency. In addition, the results can be utilized to make trade-offs between some conflicting requirements such as efficiency versus cost.