Industry White Paper

Driving performance in GaN-based USB-C adapters and chargers with EPR

January 16, 2023 by Infineon Technologies
Topics Covered
  • Most suitable topology for USB-PD chargers/adapters with wide input and output voltage range
  • Industry’s first PFC + hybrid flyback combo IC for USB-PD EPR supporting this topology
  • Related 140 W reference board for shortest time-to-market

White Paper Overview

In this white paper by Infineon, the combination of an AC-DC PFC boost and a DC-DC hybrid flyback (HFB) stage, also well known as asymmetrical half-bridge flyback topology, is proposed as the most suitable combination for USB-PD chargers and adapters with wide input and output voltage range. Charger/Adapter design engineers can review proposed converter power architecture for USB-PD EPR and review a practical 140 W prototype.