A 4-layer PCB with a solid ground plane and thermal vias is recommended. The thermal pad should be connected to a large copper area on the PCB to dissipate heat efficiently.
Ensure proper heat sinking, use a thermal interface material, and follow the recommended PCB layout guidelines. Also, consider derating the device's power dissipation at high temperatures.
The SOA is typically defined by the device's voltage and current ratings. For PTB78560CAH, the SOA is limited by the maximum voltage rating of 60V and the maximum current rating of 5A.
Use a voltage regulator or a voltage clamp to limit the input voltage. Add overcurrent protection using a fuse or a current-sensing resistor with a shutdown circuit.
A 10uF to 22uF X7R or X5R ceramic capacitor is recommended for input decoupling. The capacitor should be placed close to the device's input pins.