Increasing Power Density using Low Voltage eGaN FETs in High-Voltage Server Power Supplies – Part 1

This part 1 article presents an overview of using low voltage GaN devices in high voltage applications, with examples of a 240 VAC source 5 kW totem pole PFC and 400 VDC to 50 VDC isolated LLC converter. A FOM analysis revealed significant improvement in performance can be achieved using lower voltage devices. The benefits extend to increased power density through reduced magnetic component size and lower EMI filter requirements.

Bodo’s Power Systems
March 2025

Low Voltage GaN - Powering High Voltage Applications - Part 1