Other Parts Discussed in Thread: DRV8899-Q1
Dear TI experts,
We apply DRV8889-Q1 to drive a permanent magnet stepper motor, and the load is the gear transmission system, when the motor rotates to a certain position, the gear will not continue to be dragged, at this time the gear will have a reverse force transmitted to the motor, resulting in a slight reversal of the motor. And at this time DRV8889-Q1 cannot get the feedback of this situation, still continue to output forward pulse. Since the difference between the motor stall current and the normal operating current is small (50mA), and the Hall sensor cannot feedback the reversal phenomenon, the motor is always in a stalled state. My question is, in what way can the DRV8899-Q1 solve this problem? Is the internal stall detection helpful? If so, how to use this feature? Many thanks!
