Yeah. I'm wondering whether thermocouples could be used to measure the heatsinks of the FETs. The distance is so short though, but the FETs can get quite higher than ambient temperature, but then again, they are also connected to the same ground plane the cold junction ICS are...so I don't know how effective it will be. I have one for the motor though.
I dont think a lack of temperature difference would cause much problems would it since that just means IC and TC are at the same low temperature? Because I only really care when the FET temperature is much higher than ambient or the ground plane of the PCB since that means overheating.