Based on recent trends, improving efficiency is a key goal, and the trade-off of using slow switching devices for better EMI is not worth it. Superjunctions can improve efficiency in applications where planar MOSFETs struggle. Superjunction MOSFETs significantly reduce on-resistance and parasitic capacitance compared to traditional planar MOSFET technology. The significant reduction in on-resistance and reduced parasitic capacitance, while helping to improve efficiency, also produces fast switching transitions of voltage (dv/dt) and current (di/dt), forming high-frequency noise and radiated EMI.