I'm thinking over new multicopter power distribution board which will integrate also 4 current sensing shunts, two dual current/voltage/power sensors, a 42 Vin 3A DC-DC Buck regulator. The current,voltage and power measurements will be carried out over I2C interface. I think it's time to place aside the analogue measurements as there are a lot of clever ICs for the purpose.
1. R1-R4 are 4 current shunts. Each of them can handle 60A...or even more, but some more thermal researches should be done;
2. US1 and US2 are dual current/voltage/power sensors with I2C interface;
3. U6 and surrounding passive components are the DC-DC Buck regulator;
4. The PCB is 6 Oz double sided with glued heat sink ( optional...if needed ) on the bottom layer.
As this is just a preliminary idea, I'd like to know your pro and cons about the design.