The maximum output power of the TNY254GN-TL is 25W, but it can be derated based on the input voltage, output voltage, and ambient temperature.
To ensure the TNY254GN-TL operates within its SOA, follow the guidelines in the datasheet for input voltage, output voltage, output current, and ambient temperature. Also, make sure to provide adequate heat sinking and thermal management.
The BYPASS pin is used to connect an external bypass capacitor to improve the power supply rejection ratio (PSRR) and reduce output voltage ripple.
Yes, the TNY254GN-TL is suitable for use in flyback converter topologies, but ensure that the transformer is designed to meet the required specifications and the output voltage is within the recommended range.
Follow the recommended PCB layout guidelines in the datasheet, including keeping the input and output traces separate, using a solid ground plane, and minimizing the loop area of the transformer and output diode.