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  3. STMicroelectronics — VIPerGaN High-Efficiency GaN Power Converter Series

STMicroelectronics — VIPerGaN High-Efficiency GaN Power Converter Series

 

STMicroelectronics

STMicroelectronics VIPerGaN High-Efficiency GaN Power Converter Series

High-efficiency GaN technology for compact, next-generation designs

The VIPerGaN family from STMicroelectronics brings together advanced GaN HEMT technology and integrated control features to deliver higher power density, improved efficiency, and reduced solution size. These devices support higher switching frequencies and enable designers to shrink PCB area, simplify power supply architectures, and meet increasingly demanding energy-efficiency requirements.

Within the series, the VIPerGaN65D represents the next evolution, offering strong performance for medium-power quasi-resonant ZVS flyback converters. Its efficiency and compact footprint make it well-suited for fast chargers, compact adapters, lighting systems, and a wide range of household appliances.

Features

  • 700 V E-mode GaN power transistor
  • Integrated quasi-resonant PWM controller
  • BOM-optimized design
  • Current sensing
  • Input-voltage feedforward compensation
    • Frequency jittering for EMI reduction
    • Comprehensive protection suite
    • Low standby power
    • Dynamic blanking time & valley synchronization
    • SO16 narrow-body package

    Applications

    • Adapters
    • Fast chargers
      • Lighting
      • Home appliances

      Featured Products in the VIPerGaN Series

      Spotlight Product: VIPerGAN65D

      The VIPerGaN65D is an advanced quasi-resonant offline high-voltage converter featuring a 700 V E-mode GaN HEMT. It supports a wide input-voltage range and can deliver up to 85 W while maintaining extremely low standby consumption—below 30 mW. Its high efficiency and compact footprint make it ideal for chargers, adapters, lighting, and appliance power architectures.

      STMicroelectronics — VIPerGAN65D Advanced Quasi-resonant Offline High Voltage Converter with E-mode GaN HEMT

      VIPerGaN100W

      Designed for medium-power quasi-resonant ZVS flyback converters, the VIPerGaN100W can deliver up to 75 W across wide input ranges and up to 100 W in European-voltage applications or with PFC support. Its ZVS operation, valley synchronization, low quiescent power, and feed-forward compensation help maximize efficiency across the load curve. Integrated protection features, such as OVP, OTP, OLP, brown-in/out, and input OVP, enhance system reliability.

      VIPerGaN50 / VIPerGaN50W

      The VIPerGaN50 and VIPerGaN50W bring GaN efficiency to medium-power quasi-resonant ZVS flyback designs, with output capability up to 50 W (VIPerGaN50) or up to 75–100 W depending on the input range (VIPerGaN50W). Both versions incorporate dynamic blanking time, valley synchronization, low standby consumption, feed-forward compensation, and a robust set of integrated protection mechanisms for flexible, high-efficiency offline power supplies.

      STMicroelectronics: GaN High-Voltage Converters

      VIPERGAN65D Application Block Diagram

      Typical Configuration: Basic Features

       

      Evaluation Board

      EVLVIPGAN65DF

      This 24 V / 65 W reference design, based on the VIPerGaN65D, provides a complete platform for developing medium-power quasi-resonant ZVS flyback converters. It offers practical guidance for designers working on compact, efficient offline power supplies.

      EVLVIPGAN65DF
      24 V/65 W reference design based on VIPERGAN65D