Power Integrations

TOP204YN

TOP204YN Description

The TOP204YN from Power Integrations is a high-performance offline switching IC belonging to the TOPSwitch® series. Designed for through-hole mounting in a TO-220-3 package, this obsolete but robust component supports multiple topologies, including Boost, Buck, Flyback, and Forward configurations. With a 700V breakdown voltage and 150W power handling, it integrates an internal switch and operates at a 100kHz switching frequency, making it suitable for high-efficiency power conversion. The device features current limiting and over-temperature protection, ensuring reliable operation under demanding conditions. Its 67% duty cycle and flexible output isolation (either isolated or non-isolated) enhance design versatility.

TOP204YN Features

• Multi-Topology Support: Compatible with Boost, Buck, Flyback, and Forward topologies.
• High Voltage & Power: 700V breakdown and 150W output for robust performance.
• Integrated Protections: Built-in current limiting and over-temperature fault protection.
• High Switching Frequency: 100kHz operation enables compact magnetics and higher efficiency.
• Flexible Isolation: Supports both isolated and non-isolated designs.
• Durable Packaging: TO-220-3 through-hole package for easy integration and thermal management.

TOP204YN Applications

The TOP204YN is ideal for:

• AC/DC Power Supplies: Offline converters for industrial and consumer electronics.
• LED Drivers: High-efficiency lighting systems requiring stable voltage regulation.
• Auxiliary Power Modules: Backup or standby power circuits in appliances.
• Industrial Controls: Reliable power management in harsh environments.
• Telecom Equipment: Compact power solutions for communication devices.

Conclusion of TOP204YN

While marked obsolete, the TOP204YN remains a versatile and high-performance choice for offline power conversion. Its multi-topology flexibility, integrated protections, and high-power capability make it suitable for demanding applications. Engineers seeking a proven solution for AC/DC conversion in industrial, lighting, or telecom systems may find this IC advantageous despite its discontinued status. For modern alternatives, consider newer TOPSwitch® variants with enhanced features.