Switching mode power supplies (SMPS) for communications and server applications are emerging with high efficiency and high power density as key competitive advantages. To meet these demands, 60V-class power MOSFETs suitable for 48V power supply environments are garnering attention as essential semiconductors. Infineon's OptiMOS™ 6 60 V achieves up to 40% lower on-resistance compared to the previous generation and improved switching characteristics, simultaneously reducing conduction and switching losses. In soft-switching environments, it delivers high efficiency even at low gate voltages, while in hard-switching applications, RC snubber design effectively suppresses voltage overshoot and EMI. The combination of these power semiconductors and design techniques is accelerating efficiency improvements and miniaturization in server and communications infrastructure.