Electric Vehicle drivetrains offer numerous advantages in respect to conventional internal combustion engines including higher energy efficiency, lower emissions and decreased dependency upon oil. At the heart of the development of a new Electric Vehicle is the necessity of converting electricity from Direct Current (DC) source to Alternating Current (AC) for use in electric motors. An inverter carries out this task. The ideal EV powertrain is small in size, has high efficiency, high output, and is reliable. In this article, we present the methodology that we have successfully applied at Lucid Motors for the design optimization of the Lucid Air’s inverter.