Power Integrations

TOP250R-TL  

AC DC Converters, Offline Switches

TOP250R-TL Description

The TOP250R-TL from Power Integrations is a high-performance offline switcher IC designed for flyback topology applications, offering 82W power output with a 700V breakdown voltage. This surface-mount device integrates an internal switch, simplifying design while ensuring robust performance. It operates within a switching frequency range of 66kHz to 132kHz, supporting frequency control for optimized efficiency. The IC provides comprehensive fault protection, including current limiting, over-temperature, and over-voltage safeguards, enhancing system reliability. Although marked as "Not For New Designs", it remains a proven solution for legacy systems requiring isolated power conversion.

TOP250R-TL Features

• High Voltage Handling: 700V breakdown voltage for robust offline operation.
• Integrated Design: Combines internal switch and control features (e.g., 66.8% duty cycle) to reduce external component count.
• Advanced Protection: Built-in safeguards against over-current, over-temperature, and over-voltage conditions.
• Wide Frequency Range: Adjustable 66kHz–132kHz switching for flexibility in noise and efficiency trade-offs.
• Compliance: Meets REACH and EAR99 standards, with MSL 4 (72-hour moisture sensitivity).
• Packaging: Supplied in Tape & Reel (TR) for automated assembly efficiency.

TOP250R-TL Applications

Ideal for isolated AC/DC power supplies in industrial, consumer, and telecom systems, including:

• Legacy Power Adapters: High-efficiency offline converters for discontinued product lines.
• Auxiliary Power Supplies: Reliable low-to-mid power solutions for control circuits.
• LED Drivers: Stable voltage/current regulation for lighting systems.
• Household Appliances: Durable power management in cost-sensitive designs.

Conclusion of TOP250R-TL

The TOP250R-TL excels in flyback-based power conversion, balancing integration, protection, and efficiency. While not recommended for new designs, its proven architecture and fault resilience make it a dependable choice for maintaining or upgrading existing systems. Engineers valuing simplicity and robustness in offline power solutions will find this IC particularly advantageous.

TOP250R-TL Documents

Download datasheets and manufacturer documentation for TOP250R-TL

Datasheets :

TOP242-250      

PCN Packaging :

TR Moisture Pkg Chg 2/Jul/2021