Pulse-mode GaN RF transmitters can expose conventional AC/DC supplies to rail droop, slow recovery, and waveform distortion. This paper shows how MEAN WELL and CDI’s NCP-3200-48CAN-CDI, 3.2 kW, 48 V power supply uses active droop compensation and controlled energy buffering to keep rails flatter, support cleaner, more repeatable pulses, and help engineers reduced costs without oversizing the power supply.