All-GaN HEMTs and Planar Transformer Based 48V Voltage Regulator Common Module (VRCM) Design

An all GaN (Gallium Nitride) HEMTs (High Electron Mobility Transistors) based 48V to 12V Voltage Regulator Common Module (VRCM) is proposed in this paper for datacenter 48V rack. Furthermore, to achieve higher power density, a single core integrated planner transformer is also proposed. Lastly, a prototype of 1MHz 1kW module is demonstrated, achieving peak efficiency of 98.27% with 54V Vin and power density above 1000W/inch ³ .