SLOA312 December 2021 DRV8412 , DRV8424 , DRV8426 , DRV8428 , DRV8434 , DRV8436 , DRV8803 , DRV8804 , DRV8805 , DRV8806 , DRV8844 , DRV8847 , DRV8932 , DRV8935 , DRV8955
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Stepper motors come in many different varieties, but there are two main winding configurations for permanent magnet and hybrid stepper motors: unipolar and bipolar. Bipolar motors are currently more widely used, and some legacy systems are slowly phasing out unipolar stepper motors in favor of bipolar steppers. Nevertheless, unipolar stepper motors are still used in several applications such as textile machines, printers, Pachinko, and slot machines.
The DRV8xxx stepper drivers from Texas Instruments are primarily meant to drive bipolar stepper motors. But some of them can drive unipolar stepper motors as well. The following sections describe how various DRV8xxx drivers can be adapted to drive unipolar stepper motors.