The TOP244YN is a high-performance, offline switcher IC component designed for non-isolated power supply applications. Manufactured by Power Integrations, this device integrates a 700V power MOSFET, oscillator, and control circuitry, resulting in a compact and efficient power supply solution. The TOP244YN offers a variety of key features that make it popular among designers:
1. Primary-Side Regulation (PSR): This IC employs PSR technology, allowing it to regulate the output voltage without the need for an optocoupler or a secondary feedback circuit. This simplifies the design, reduces component count, and enhances reliability.
2. Integrated Protections: The TOP244YN incorporates various protection features to ensure safe operation and protection against fault conditions. These include thermal shutdown, overvoltage protection, line under-voltage lockout, and adjustable current limit.
3. Wide Input Voltage Range: The IC can handle a wide input voltage range from 85Vac to 265Vac, making it suitable for universal input power supplies found in a variety of applications.
4. Low Power Consumption: The TOP244YN operates at low power and standby currents, minimizing energy losses and improving overall efficiency.
5. Auto-Restart Protection: In case of a fault condition, this IC automatically enters a self-recovery mode, attempting to restart the power supply. This enhances system reliability and reduces the need for manual intervention
