Does a stepper motor need a driver?

Does a stepper motor need a driver?


The working principle of a stepping motor is to switch its stator poles to logical LOW and HIGH voltage values ​​so that it can adopt the required stepping method. For this, you need a logic to formulate the switching sequence of these voltage levels. You can use the controller to implement it.

If you want to use a microcontroller to control a stepper motor, you need a stepper driver. Since the microcontroller has its operating voltage limit (such as 3.3V or 5V), and many stepper motors have a higher operating voltage than this limit, you need a driver to control the switching of the stepper motor voltage, so the microcontroller itself This should not be done, otherwise the controller will eventually be damaged.The driver is nothing more than arranging the circuit to make the switch simple and "safe". The rated voltage of the stepper drive is greater than the rated voltage of the microcontroller. Therefore, you can easily control a stepper motor with a given rated voltage using a driver of this rating.