I have the following voltage sensor to place in a layout of a low voltage converter (800 V dc link).
The input voltage dividers need to be located in the power-stage section of the PCB. The question is as follows: should the differential + LPF opamps be located close to the control stage or should they be close to the voltage dividers?
Pros of being close to the voltage divider: the second output has a low-impedance path to the controller.
Pros of being close to the controller: possible noise pickup on the Vin_MCU trace is quite low.
This will be a hard-switched converter.