Power Integrations

TOP222Y

TOP222Y Description

The TOP222Y from Power Integrations is a high-performance offline switching IC designed for AC/DC power conversion applications. This obsolete through-hole-mounted device integrates a 700V breakdown voltage MOSFET, making it suitable for robust power supply designs. With an internal switching frequency of 100kHz and a 67% duty cycle, it delivers efficient power conversion up to 25W. The IC supports multiple topologies, including Boost, Buck, Flyback, and Forward, offering flexibility in circuit design. Its isolated output ensures safety in high-voltage applications, while built-in current limiting and over-temperature protection enhance reliability. Packaged in a TO-220-3 tube, the TOP222Y complies with REACH Unaffected and EAR99 regulations, making it suitable for global markets.

TOP222Y Features

• 700V Breakdown Voltage: Handles high-voltage inputs with reliability.
• Integrated MOSFET: Simplifies design and reduces external component count.
• Multi-Topology Support: Compatible with Boost, Buck, Flyback, and Forward configurations.
• 100kHz Switching Frequency: Balances efficiency and noise performance.
• Fault Protection: Includes current limiting and over-temperature safeguards.
• 25W Power Output: Ideal for mid-power applications.
• Isolated Output: Enhances safety in offline power supplies.
• Through-Hole Mounting (TO-220-3): Easy to assemble and service.

TOP222Y Applications

The TOP222Y is optimized for offline power supplies, including:

• AC/DC Adapters: For consumer electronics and industrial equipment.
• Auxiliary Power Supplies: In appliances, telecom systems, and LED drivers.
• Flyback Converters: For cost-effective isolated power solutions.
• Forward Converters: Where higher efficiency and power density are required.
  Its multi-topology flexibility makes it a preferred choice for designers needing a single IC for diverse power architectures.

Conclusion of TOP222Y

The TOP222Y stands out for its high-voltage capability, integrated protections, and topology versatility, making it a reliable solution for offline power conversion. While now obsolete, its 25W output, 700V rating, and robust fault protection ensure it remains viable for legacy designs or specific industrial applications. Engineers seeking a simple, high-performance offline switcher with through-hole mounting will find the TOP222Y a compelling option.