New Negative Output Wide Voltage Gain Range Boost DC-DC Converter

A new negative output DC-DC converter with a wide voltage gain range is recommended in this paper. On the input side, two Boost structures are connected in parallel, and the input current is split through two inductors, thereby reducing the volume of the inductors and improving the efficiency. When charging inductor, construct a higher charging voltage to increase the voltage gain. On the output side, capacitors are discharged in series to further upgrade the voltage gain while decreasing the voltage stress on the power semiconductors. Analyses are done on the working principle, features, and design factors. A 400W prototype is developed to verify the correctness of theoretical analysis.