A constant current source is used to drive a stepping motor. When the DRV_SIN input voltage is 0V, it is normal without load. However, if the motor is added, some will oscillate, and some will not oscillate. I always feel this The circuit is weird, is there any guidance from a great god?
Dorothy Posted on March 5, 2021
Find a special driver IC for stepper motors.
Adele Posted on March 5, 2021
Because of the application scenario, a linear drive scheme is required
Mina Posted on March 5, 2021
How about moving R79 and C99 to both ends of the motor? C99 can be enlarged