TNY254P datasheet by Power Integrations

TNY254P Frequently Asked Questions (FAQs)

• What is the maximum output power that the TNY254P can handle?
  The TNY254P is a 25-watt offline switcher IC, so it can handle up to 25 watts of output power.
• How do I ensure the TNY254P operates within its safe operating area (SOA)?
  To ensure the TNY254P operates within its SOA, follow the guidelines in the datasheet for maximum drain-source voltage, drain current, and power dissipation. Also, make sure to provide adequate heat sinking and thermal management.
• What is the purpose of the BYPASS pin on the TNY254P?
  The BYPASS pin is used to connect an external bypass capacitor to the internal voltage regulator. This helps to reduce noise and improve the overall stability of the IC.
• How do I choose the right transformer for my TNY254P-based design?
  When selecting a transformer for your TNY254P-based design, consider factors such as the input voltage, output voltage, and power rating. The transformer's turns ratio, magnetizing inductance, and leakage inductance also play a crucial role in the design. Consult the datasheet and application notes for guidance.
• What is the recommended layout and PCB design considerations for the TNY254P?
  For optimal performance and reliability, follow good PCB design practices such as keeping the layout compact, using a solid ground plane, and minimizing noise coupling. Also, ensure that the IC is properly decoupled and that the transformer is placed close to the IC.