Design and Performance Analysis of a High-Gain DC-DC Converter Employing an Active Switched Network

High step-up DC-DC conversion is a critical requirement in applications such as renewable energy systems, electric vehicles, and DC microgrids, where low-voltage energy sources including photovoltaic arrays and fuel cells must be efficiently elevated to higher voltage levels. Conventional boost converter topologies, however, encounter limitations associated with extreme duty-cycle operation, elevated voltage stress on semiconductor devices, and deteriorated efficiency at higher gain conditions. To mitigate these challenges, this study proposes a high-gain DC-DC converter architecture founded on an active switched network (ASN). The configuration integrates coupled switched-inductor and switched-capacitor cells, enabling substantial voltage amplification under moderate duty ratios, thereby alleviating device stress and ensuring continuous input current characteristics. A comprehensive steady-state formulation in continuous conduction mode (CCM) is developed, followed by a systematic methodology for sizing both active and passive components. The dynamic performance is further assessed through the implementation of open-loop and closed-loop control schemes, validated via MATLAB/Simulink simulations, and subsequently verified on a 100 W hardware prototype. Comparative assessment against conventional and state-of-the-art converter structures demonstrates that the proposed ASN-based topology achieves a superior gain-to-component ratio along with enhanced efficiency, recording 86% under rated loading conditions. The outcomes establish the proposed converter as a viable candidate for renewable energy integration, fuel cell-powered systems, and distributed DC microgrid infrastructures.