Power Integrations TOP258LN

TOP258LN - TOPSwitch-HX High-Power Offline Switcher IC

The TOP258LN from Power Integrations is a high-performance offline switcher IC from the TOPSwitch-HX family, designed for isolated flyback topology power supplies up to 122W. This integrated solution combines a 700V power MOSFET with advanced control circuitry, delivering exceptional efficiency and reliability for industrial, telecom, and consumer applications.

Key Features & Benefits

• High Power Capability: Supports up to 122W output power with 700V breakdown voltage
• Dual Frequency Operation: 66kHz and 132kHz switching frequencies for design flexibility
• Comprehensive Protection: Built-in current limiting, over-temperature, and over-voltage fault protection
• High Efficiency: 78% maximum duty cycle optimizes transformer utilization
• Wide Operating Range: -40°C to 150°C junction temperature for harsh environments
• Space-Saving Design: Compact eSIP-7F through-hole package with exposed pad for enhanced thermal performance

Typical Applications

• AC-DC power supplies for industrial equipment
• Telecom and networking infrastructure power
• Consumer electronics adapters and chargers
• LED lighting drivers
• Auxiliary power supplies

Why Choose TOP258LN?

The TOP258LN simplifies power supply design by integrating the high-voltage switch, control logic, and protection features into a single device. This reduces component count, improves reliability, and accelerates time-to-market. As an authorized distributor, we guarantee 100% authentic Power Integrations components with full manufacturer traceability and documentation.

Authenticity Guaranteed: All TOP258LN units are sourced directly from authorized Power Integrations distributors with full traceability, manufacturer documentation, and warranty support. We provide long lifecycle availability to support your critical designs.

• TOP258LN.pdf