I am working on a 3 phase energy metering project using ADE7752 IC. I am stuck into getting the power supply part in a smaller form factor.
Since energy measurement is being done for all 3 phases, the IC must be able to measure energy even if two phases go down and hence VDD supply must come from all three phases.
After some searching, I came to this schematic:
This involves 3 transformers which will be too bulky in size and hence becoming an issue for me.
Is there some alternative compact circuit which can do the job? I don't need isolated power supply here.
I was thinking about using diodes to rectify all phases and combine them at a capacitor but I think that will end up in smoke if not fire and shock.