This question is about an alternative path for relay flyback diodes.
I plan to drive panasonic 12VDC CP1-12V relay with a NUD3160LT1G power MOSFET and the NUD3160LT1G datasheet says because the MOSFET comes has protection diodes, there is no need for a "free−wheeling diode" to drive an inductive load.
My question is, is it good enough to have this topology of flyback path through high voltage zener diodes and ground and +12 ground rails or should I connect a reverse diode directly on the relay's coil anyway.
This is for a non critical one-of audio application in my car. Cost is not an issue but I would prefer avoiding an additional diode if possible. The NUD3160LT1G will be driven by a 5V ATMEGA328P MCU if it maters.