GaN Systems 3kW LLC Resonant Converter Reference Design

GaN Systems 3kW LLC Resonant Converter Reference Design is a high-density and high-efficient GaN-based converter that reduces design cycles, cost, and time to market. This design integrates 650V enhancement-mode transistors that achieve >100W/inch3 high power density (AC/DC PSU), >96% efficiency, and exceeds 80+ titanium standard for power supply units (PSUs). The converter operates at 380VDC to 420VDC supply voltage range and offers 54V output voltage. This converter features comprehensive protections such as over-current, short circuit, and over voltage system protection. Typical applications include data center/server power converter, telecom, and industrial power supply applications.

Features

  • Digital-based solution with soft switching LLC resonant converter
  • Achieves 80+ titanium with GaN systems bridgeless totem-pole PFC
  • High power density up to 146W/inch3 (including air-forced cooling)
  • >98% efficiency
  • Meets low profile 1U data center form factor
  • Over-current, short circuit, and over voltage system protection

Specifications

  • 380VDC to 420VDC
  • 55A full load current
  • 250KHz target frequency (resonant frequency)
  • 450KHz maximum frequency
  • 80mm x 140mm x 30mm PCBA board size (including air-forced cooling)
  • 54V output voltage

Applications

  • Data center/server power converter
  • Telecom SMPS
  • Industrial SMPS

Block Diagram

Block Diagram - GaN Systems 3kW LLC Resonant Converter Reference Design

GaN Systems 3kW LLC Resonant Converter Reference Design