L9963E Current measurment

[David_P]

Hi 

I have some queries regarding the current measurement function for L9963E. 
@AScha.3 

1) Can we change the gain of current sense or is it a fixed gain and what is the gain error ?
2) What is the % overcurrent measurement error ? Can we set the overcurrent limits for both positive and negative values and can we change the limits during the battery pack operation dynamically (i.e during charge and discharge) ?
3) In the datasheet it says in 4.6.1 "In the range of [-1500 A, -600 A) and (+600 A, +1500 A], the accuracy of ±5‰ is chosen ". so the current measurement error is 5% ?

Can i also get the details about this accuracies mentioned in Table 41 of datasheet ? 

 

[AScha.3]

Hi,

- just, as far i can tell (otherwise ask online support : https://ols.st.com/s/ )

 

1. its gain is fixed , you choose the resistor to adjust the range:

2. +/- 3A , at 600A tihis is   0.5 % of full range.

 

3. the accuracy of ±5‰ is  0.5 %  !

 

>Can i also get the details about this accuracies mentioned in Table 41 of datasheet ? 

For this you should ask STM support.