Hi Team
I have a question regarding the Vana-fs Voltage in correlation with the i2c max speed command. Vana-fs is defined on page 8 of the DRV10983 datasheet (rev.H) as V3P3 x 0.9, so that would be 2.97V if my V3P3 is in fact 3.3V.
When i meassure the rpm with the fg pin, the max rpm i can get with that voltage is 36000 on a maxon ecx bldc motor.
If i set the speed via the i2c speed command to 511 i can get up to 39000 rpm. Because of that, i set the speed pin to the V3P3 voltage. That also got me up to 39000rpm.
Now i am really confused, because the diagram an page 29 of the same datasheet suggests that there should be no speed increase if you go higher than the Vana-fs. But there clearly is.
What is the point of defining Vana-fs as V3P3 x 0.9, if you cant go to the maximum rpm with that voltage? Shouldn't the max rpm set via the analog speed control mode be the same as the one set via the i2c speed control mode?
