Tool/software:
Hi,
We are using the MCT8316A to drive motors on a commercial device that using battery.
On whatever battery level (down to about 20V), I must provide the motors a constant (known) speed.
Since my device can run on varying input voltage levels, I need to be sure that the motor speed will remain constant.
I can use software to implement the close-loop by reading the input voltage and calculating the pwm value (via I2C), but I'd like to know if there's a way to use a driver feature instead.
I tried turning on the SPEED_LOOP on the CLOSE_LOOP_MODE register, but I found that the speed unexpectedly decreased when I lowered the input voltage (using a lab power supply).
What have I been missing?
Thanks,
Dagan