DRV8889-Q1: accuracy control issues

   HI ：

  We are now using DRV8889 to drive a bipolar stepper motor, which is used in HUD products. When the motor drives the reflector to move back and forth multiple times, there will be accuracy control issues. Please help analyze from the perspective of the DRV8889 driver chip, which factors are related to it?

   We now default to using 100% current full step (two-phase excitation)。The step frequency is 500Hz.