Power Integrations TOP257MG

TOP257MG - TOPSwitch-HX Offline Switcher IC

The TOP257MG from Power Integrations is a high-performance offline switcher IC from the TOPSwitch-HX family, designed for cost-effective, space-saving AC-DC power conversion in flyback topology applications up to 41 watts.

Key Features & Benefits

• Integrated 700V Power MOSFET – Reduces component count and board space
• 41W Output Power – Ideal for consumer electronics, industrial controls, and auxiliary supplies
• 66kHz Switching Frequency – Enables compact transformer design
• Comprehensive Protection – Built-in current limiting, over-temperature, and over-voltage protection
• 78% Maximum Duty Cycle – Optimized for wide input voltage range applications
• -40°C to 150°C Junction Temperature Range – Suitable for harsh industrial environments
• Through-Hole SDIP-10C Package – Easy assembly and reliable mechanical connection

Typical Applications

• AC-DC adapters and chargers
• Auxiliary power supplies for industrial equipment
• Home appliances and white goods
• LED lighting drivers
• Standby and bias supplies

Why Choose TOP257MG?

Power Integrations' TOPSwitch-HX series delivers exceptional reliability and design simplicity. The TOP257MG integrates control, protection, and high-voltage switching in a single package, reducing design complexity, BOM cost, and time-to-market. Backed by full manufacturer documentation, reference designs, and our authorized distributor support, you can confidently design-in this proven solution for long lifecycle programs.

Authorized Distributor – We supply genuine Power Integrations components with full manufacturer traceability, documentation, and warranty support. All parts are sourced through authorized channels to ensure authenticity and long lifecycle availability for your critical designs.

• TOP257MG.pdf