The TOP223YN is a highly efficient integrated circuit (IC) component that belongs to the TOPSwitch family of power conversion devices. Manufactured by Power Integrations, this IC is widely used in various applications such as offline power supplies, LED lighting, and battery chargers.
The TOP223YN is a primary side regulated (PSR) switcher that operates in a flyback topology. It integrates a 700V MOSFET, high-voltage power switch, frequency jittering, and line compensated over-power protection. This enables the device to provide accurate power control without the need for secondary-side feedback circuitry.
One of the key features of the TOP223YN is its excellent energy efficiency. It employs a variable frequency control technique that adjusts the switching frequency based on the load conditions, minimizing power losses. As a result, it achieves high conversion efficiency throughout the load range, thereby reducing energy consumption and thermal dissipation.
Another noteworthy feature is the integrated multiple protection mechanisms it offers. The IC incorporates features like auto-restart, which provides fault protection against output overvoltage, output undervoltage, output overcurrent, and over-temperature conditions. This ensures robust system operation and safeguards against potentially damaging situations.
The TOP223YN also incorporates a built-in high-voltage startup circuitry, eliminating the need for a separate bias winding and providing a compact solution
