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Power Integrations — Power Integrations — TOPSwitchGaN Integrated Offline Switcher

 

Power Integrations
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Power Integrations TOPSwitchGaN Integrated Offline Switcher

Featuring EcoSmart Technology

Power Integrations introduces TOPSwitchGaN, an integrated offline switcher that enables up to 440 W output in a classic flyback architecture. When designs start to push beyond typical flyback limits, engineers often face increased complexity, larger magnetics, and thermal challenges.

This device simplifies that path by combining a robust 800 V GaN switch with advanced control, helping reduce component count while maintaining high efficiency and compact form factors.

Features

  • Up to 440 W output power in flyback topology
  • 90% average efficiency from 20% to 100% load
  • 800 V PowiGaN switch with strong surge capability
  • Variable frequency and current control via analog feedback
  • Operates in both CCM and DCM modes
  • Switching frequency up to 150 kHz for smaller magnetics
  • Integrated 5 V regulator on BYPASS pin
  • Frequency jitter helps reduce EMI filter size
  • Integrated soft start minimizes startup stress
  • No load consumption below 50 mW at 230 VAC
  • EcoSmart technology for energy efficient designs
  • Auto restart limits fault power to less than 3%
  • Line undervoltage and overvoltage protection
  • Accurate thermal shutdown with hysteresis
  • Available in surface mount and through hole packages

Applications

  • Appliances
  • Tools, EV chargers
  • Industrial power supplies

Schematic

Example of TOPSwitchGaN Application Schematic

 

Power Integrations — TOPSwitchGaN Integrated Offline Switcher

 

 

TOPSwitchGaN: Replace Complex Resonant Circuits with Simple Flybacks Up to 440 W

Design Kit

⮛

RDK-1018

168 W isolated flyback power supply for e-bike chargers using TOPSwitchGaN (TOP7075E)

Design teams looking to extend flyback power without moving to more complex topologies can use TOPSwitchGaN to simplify their architecture. With integrated protection, high efficiency, and GaN performance, it supports compact, reliable designs while keeping development overhead under control.

Reference Design Report ↗

Power Integrations — RDK-1018 Design Kit
🔍 View Design Kit