Other Parts Discussed in Thread: DRV8801, DRV8843, DRV8873, DRV8840, DRV8412, DRV8881
Hi
In using Brushed Motor Controllers DRV 88xx (such as DRV8801, 8840...DRV8848....etc);
· None of these DRV88** can report the actual value of the current to the MCU. Correct?
· We cannot control the current of the motor all the time. Correct?
· At best we can set the current level to 1 one of 32 values (as happens in DRV8843. A feature that is not available in every DRV88**). Correct?
· Even if we PWM the enable pin we still cannot control the current accurately because the MCU does not get current feedback and hence has no way to accurately control that PWMed signal to generate accurate current control.
· The only exception to all the above is DRV 887*. Correct?
· Is there any other DRV88** in the family that provides current feedback to the MCU?
· Is there any DRV88** in the family that provides can adjust the current level continuously (rather than to 32 levels)?
· If we use one of the evaluation board (say EVM DRV8848)….it has MCU on-board….what is the easiest way to get access to one of the analog pins of that MCU…we would like to provide current sensor feedback to that pin ?
Regards
Sam