Characterization of Two-phase Interleaved Buck Converter with Circuit Parasitic

The advancement of power electronics systems towards several applications such as distributed generation, electric vehicle etc required the low cost, highly efficient, high density power converters. The concept of interleaved converter comes into picture with the requirement for minimization of ripple current at the input and/or output, reduce the size of the passive components incorporated in the circuit, resulting the overall efficiency and cost of the converter is improved. This paper presents state space analysis of two-phase interleaved buck converter (IBC) with the consideration of circuit parasitic. The state space averaging technique is used to derive the small signal model of two-phase IBC.