I tried to calculate the scale factor for SDFM current sensing of TIDA-01606. I did the following:
1. Vclipping = 0.064V
2. CodeWorde(peak) in 32 bit format =2147483648
4. Rshunt=0.003 ohm
Scale Factor = 0.064 / (2147483648 * 0.003)
However, the calculated Scale Factor gives the wrong current measurement in DSP. I experimentally calculated the scale factor and from my calculation, CodeWorde(peak) should be 964135.3. I am wondering what is wrong with my calculations.
Moreover in TI code, the scale factor is defined 1/OSR^3. I would be great full if you could also explain about TI scale factor.