I've seen power protection that uses:
- MOV (metal-oxide varistor)
- TVS diode
Application Note: Transient Voltage Suppressors (TVS Diode)
I didn't see any design guide for the inductor selection, so I choose 1 A inductor 4.7 µH. But doesn't that mean it will carry the surge current that TVS should clamp?
I'm not sure if 4.7 µH the right selection or not.