A Multiple Input Multiple Output (MIMO) DC-DC converter is an advanced power electronics device designed to efficiently manage power in electric vehicle (EV) systems. Unlike traditional converters, MIMO converters handle multiple input sources, such as batteries, solar panels, or regenerative braking systems, and deliver power to multiple output loads, like the vehicle's motor, auxiliary systems, and battery charging circuits. This configuration enhances energy management, improves efficiency, and extends the vehicle's range by optimizing power distribution. MIMO converters also provide greater flexibility, redundancy, and fault tolerance, ensuring a reliable and robust EV power system. By integrating renewable energy sources and supporting bidirectional power flow, these converters are crucial for the development of sustainable and high-performance electric vehicles, making them a key component in advancing the EV industry and reducing our carbon footprint. This book includes introductory chapters of different converters, theoretical framework of MIMO converter, topologies and simulation of MIMO for research.