TOP252PN datasheet by Power Integrations

TOP252PN Frequently Asked Questions (FAQs)

• What is the maximum output power of the TOP252PN?
  The maximum output power of the TOP252PN is 25W, but it can be derated based on the input voltage, output voltage, and ambient temperature.
• How do I choose the right transformer for the TOP252PN?
  The transformer should be chosen based on the output power, output voltage, and input voltage. A transformer with a turns ratio of 1:1.2 to 1:1.5 is recommended. The transformer's primary inductance should be at least 1.5uH.
• What is the purpose of the BYPASS pin on the TOP252PN?
  The BYPASS pin is used to connect an external bypass capacitor to improve the power supply's noise immunity and reduce electromagnetic interference (EMI).
• How do I ensure the TOP252PN operates within its safe operating area (SOA)?
  To ensure the TOP252PN operates within its SOA, the input voltage, output voltage, and output current should be within the recommended limits. The device's junction temperature should also be kept below 150°C.
• Can I use the TOP252PN in a flyback converter topology?
  Yes, the TOP252PN is designed for use in flyback converters. It has an integrated high-voltage power MOSFET and a controller that can be used to implement a flyback converter.