This chapter aims to bring a detailed analysis of the specific design aspects of inverters for advanced three-phase electric motors, which require a high degree of precision in their control to ensure greater efficiency, cost reduction, and increased productivity. The study delves into optimizing the circuit and PCB design of the high-voltage front-end. The research highlights the importance of vectorial control, which requires precise speed, position, and torque regulation enabled by appropriate sensors and efficient high-frequency switching circuits. Addressing power supply challenges, such as inrush currents, voltage transients, and harmonics, the study employs simulations and control techniques to ensure stable motor operation and system integration. Proper sizing, assembly, and protection mechanisms are discussed to safeguard against overload, overvoltage, and overheating. Simulation results underscore the benefits of a well-optimized high-voltage front-end, leading to improved motor efficiency, reduced maintenance costs, and enhanced performance under variable load conditions.