INA3221: Schematic review

Hello Hailiang,

Here are my comments for your schematic:

• The PV pin should be pulled up to the same voltage as VPU. So in this case, if you want PV pulled up to XP.3R.3V_EARLY, then you can just connect VPU to that same node.
• When not using a channel, the power valid alert will not work properly if you don't connect IN- to something. Here is what is says in the datasheet:
  • 
• I do not see pullup resistors on the I2C lines, but I presume they are somewhere else on the schematic. 

Regards,

Mitch