Medium-voltage 3-phase inverters operating between 48 V and 400 V form the power conversion backbone of modern PMSM and BLDC drives, spanning applications from EV traction systems and industrial servo drives to HVAC compressors and e-mobility platforms. At these voltage levels, the inverter must manage significantly higher energy densities than low-voltage designs while delivering the precise, high-frequency switching required for field-oriented control (FOC) and regenerative braking. This voltage range introduces a fundamentally different set of semiconductor challenges – from gate drive isolation and dV/dt-induced Miller turn-on, to the critical trade-offs between silicon MOSFETs, SiC MOSFETs, GaN FETs and IGBTs.