We are working on a MPPT Buck converter with a high accuracy required (1%) on global system.
So we are looking for a solution in order to reach an accuracy of 0.5% on current measurement and on voltage measurement on a noisy environment.
Main difficulty is we must reach an accuracy of 0.1% on the range from 0.3A to 10A.
Our preliminary solution for current measurement use AD7124-4 reference as describe below :
Our calcul permits to define 0.52% typical average accuracy on 400mA to 10A measure. However we have some doubts, do you have a design guide or reference design in order to help us ?