Hello Motor driver Experts,
I have a general question regarding understanding the current accuracy on the DRV8825. Data sheet shows a table of current accuracy versus
Let's look at an example:
IPeak = Vref / (5*Resnse) = 1.5V / (8 5* 0.5 Ohm )= 600mA
Running 71% current setting resulting in the current will be 600mA * 71% +/- 5% = 426mA +/-21.3mA ( 5% of 426mA ) . Or is it 600mA+/- 30mA ( 5% of 600mA )
Would this current value contain all error sources incl. Vref tolerances and gain variations but excluding the tolerances on Rsense? Or how is the information in the table to be understood?
I need to be able to predict the total tolerance on the trip current..