Power Integrations

TOP233GN-TL

TOP233GN-TL Description

The TOP233GN-TL from Power Integrations is a high-performance offline switcher IC designed for flyback topology applications. This surface-mount device integrates a 700V breakdown voltage MOSFET, enabling efficient power conversion up to 25W. It operates within a 66kHz to 132kHz switching frequency range and features a 78% duty cycle, making it suitable for compact, high-efficiency power supplies. The IC is RoHS compliant and packaged in Tape & Reel (TR) for automated assembly, though it is marked as obsolete, limiting availability for new designs.

TOP233GN-TL Features

• Integrated 700V MOSFET: Reduces external component count and simplifies design.
• Advanced Control Features: Includes frequency control for optimized performance under varying loads.
• Comprehensive Fault Protection: Combines current limiting, over-temperature, and over-voltage protection for robust operation.
• Isolated Output: Ensures safety and compliance in offline power applications.
• High Switching Frequency (66kHz–132kHz): Enables smaller magnetics and capacitors, reducing board space.
• Moisture Sensitivity Level (MSL 4): Requires careful handling with a 72-hour shelf life after exposure.

TOP233GN-TL Applications

Ideal for low-to-mid-power AC/DC conversion, the TOP233GN-TL excels in:

• Industrial Power Supplies: Reliable performance in harsh environments.
• Consumer Electronics: Compact adapters for set-top boxes, monitors, and IoT devices.
• LED Drivers: Efficient constant-voltage/constant-current designs.
• Auxiliary Power Modules: For appliances and telecom systems requiring isolated outputs.

Conclusion of TOP233GN-TL

The TOP233GN-TL offers a balance of integration, efficiency, and protection, making it a strong choice for offline flyback designs. While obsolete, its 25W capability, 700V ruggedness, and fault resilience remain valuable for legacy or niche applications. Engineers should evaluate alternatives like Power Integrations' newer TOPSwitch-JX series for modern designs requiring higher efficiency or advanced features.