Other Parts Discussed in Thread: INA282, INA286
I want to use the INA186 to measure a +/-12V boost converter with one INA186 on each rail. Note that the INA186 supply voltages are provided separately by a 3.3V regulator. For reference, I've attached
a screen cap of the converter and where the current is to be monitored.
The output of the converter that will be measured is +/-12V. To connect the sensing resistor on the negative supply, does one simply connect the sensing resistor the opposite as the +12V supply? Seems logical because the common mode output of the converter is at system ground, so either way the negative current is referenced to the same point as the positive current.
Bad assumption, or will it work? BTW - it's amazing there are no reference designs on this seemingly basic application as many designs use negative supplies that need current monitoring.