Interleaved Parallel for DC-DC Converters Operating in CCM

In the power conversion, power supply in parallel to increase capacity and reliability is a commonly used method; and the current ripple have a great impact on the size and weight of the power supply. DC-DC parallel power supply ripple in the buck circuit model based on analysis, Fourier series expansion of the current continuous state of a single DC power inductor current, commence on the series and parallel power simulation study. Analysis and simulation results show that interleaved parallel can effectively inhibit the output current ripple.