When I program my LTM4678 outputs to +2.0V, I get a sensible small current from my open-circuit load. When I then program it to >= +2.1V, suddenly it says it is drawing > 2.5A, which can't be correct for a small linear step and no load. Changing bit 7 (and also tried with bit 1) of MFR_PWM_MODE (Range of ILIMIT and HI/LO Voltage Range) makes no change/improvement. Please if you an suggest what configuration I might have wrong. Possibly related, I didn't understand what to do with the table of mV/IOUT_CAL_GAIN values for the IOUT_OC_FAULT_LIMIT: MFR_PWM_MODE is not supposed to be changed while an output is enabled--am I supposed to predict what range I am going to be reading from my load before it is even turned ON? Or, is the table just for when I am setting my current-limit and not related to the live readings of the current? (if yes, then it makes sense I could program the range bit at the same time as setting my current limit register).
In summary, it is implied there is some ranging/configuration needed for the live/run-time current draw, and I am not sure the configuration/procedure to follow to get the correct readings. The LTM4675 and 76A modules on my board do not seem to have this behaviour.