Secondary Side ZVS Flyback Controller


Package, Size and Pins

  • UFQFPN28
  • 4mm x 4mm
  • 28 pins

Available Resources


EPIC1AFQ01 is a secondary side ZVS flyback controller based on the proprietary QuarEgg® architecture.

Best suited for AC/DC USB Power Delivery 3.1 power converters without PFC, and for every high performance high power density flyback converter.

Key Features

  • Integrated USB Power Delivery 3.1 with customizable capabilities
  • Enables peak efficiency > 94.5%
  • Multi-mode operations to enable > 90% light load efficiency
  • Enables < 18mW stand-by power consumption
  • Integrated synchronous rectification
  • No optocoupler needed
  • Frequency jittering for minimized EMI signature
  • Vout overvoltage protection
  • Customizable brownout protection
  • Customizable overpower protection
  • Vout-dependent overcurrent protection
  • Integrated over temp protection
  • Integrated cable drop compensation

Simplified schematic

AC/DC QuarEgg ZVS flyback converter controlled by EPIC1AFQ01 secondary side controller with integrated USB-C Power Delivery 3.1 Output

Evaluation Board

  • 35W output power
  • Size (uncased) 38.3 x 38.3 x 18.6 mm3
  • Power density 21.02 W/inch3
  • 120% Overloading capability
  • <30mW EU - <18mW US no load
  • Pass EMI worldwide
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