The work presented in this thesis is part of the European HiEFFICIENT project, which aims to push the boundaries of powertrain inverter design by enhancing energy efficiency, reducing costs, and promoting the adoption of electric mobility and green energy systems. In this context, Ideas & Motion (I&M), the hosting company for this thesis, was responsible for the complete design, development, and prototyping of an automotive-grade modular traction inverter with an integrated control unit. The design of the control board focuses on several key objectives, including fault-tolerant operation, Prognostic Health Management (PHM), an "on-demand" control strategy, and variable switching frequencies up to 50 kHz.