Hi,
I'm looking for a help on understanding the max VREF voltage for the DRV8231A part, as the datasheet seems to give slightly contradicting data on this.
Ideally, I wanted to get the maximum usable range for IPROPI, and my external ADC is 5V, so I thought applying the same 5V on VREF pin, and setting RIPROPI to a value where the maximum voltage on IPROPI will be slightly below 5V, and current limiting would never be triggered.
Now the datasheet seems to slightly disagree whether 5V on VREF would be ok or not. Table 6-1 says "Analog input. Apply a voltage between 0 to 5 V" for that pin, so it looks like 5V should be a normal operating voltage. Table in section 7.1 says the absolute maximum rating on the pin is 6V, which looks ok, but doesn't tell whether 5V is considered a normal operating voltage or not. Now, the table in section 7.3 says the "maximum recommended operating voltage" on that pin is 3.6V which gives me an impression that supplying 5V on that pin long term wouldn't be a good idea, which differs from the data in Table 6-1.
I tried 5V and it seems to be working, but I'm not sure whether it is usable long term, and wanted to hear a recommendation, ideally from a TI Engineer.
Thanks
