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

With the announcement of the USB PD 3.1 standard, higher power levels of up to 240 W are enabled. Still, the wide output voltage range from 5 V to 48 V raises new challenges for the converter topologies currently in use. 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.

In this white paper, you will:
• Learn how to boost performance and power density in GaN-based adapters and chargers
• Get introduced to the most suitable topology for USB-PD chargers and adapters with wide input and output voltage range
• Discover how the industry’s first PFC + hybrid flyback combo IC for USB-PD EPR supports this topology
• Get to know the related 140 W reference board for shortest time-to-market