An Efficient Interleaved Three-Level Buck Converter for Fast Charging Applications

The growing demand for fast and efficient battery charging in modern electronic devices and electric vehicles has increased the need for advanced power converter topologies. Conventional DC–DC buck converters often suffer from high current ripple, reduced efficiency, and thermal stress under high-power fast charging conditions. To address these challenges, this project proposes an interleaved three-level buck converter for fast charging applications. The proposed topology combines the advantages of interleaving and three-level conversion techniques to enhance overall performance. Interleaving distributes the input current across multiple phases, reducing current ripple, minimizing component stress, and improving thermal performance. Meanwhile, the three-level structure lowers voltage stress across switching devices and increases conversion efficiency. The converter provides stable output voltage regulation while supporting higher charging currents required for fast charging systems. Simulation and analysis demonstrate improved efficiency, reduced ripple, and faster charging capability compared to conventional converter designs. Therefore, the proposed interleaved three-level buck converter is a promising solution for high-efficiency and high-power fast charging applications in electric vehicles and battery-powered devices.