Do you know stepper motor driver?

A stepper motor is a brushless DC electric motor that divides its full rotation into equal steps. This type of motor has no gears or bearings, so the entire motor can rotate at a much lower speed than a conventional motor. This type of motor is commonly used in industrial applications. Unlike conventional DC motors, stepper motors do not require an external power supply.


Stepper motors are useful for precise positioning and repeatability. They are highly reliable and have low speed requirements. Their synchronous rotational speed is proportional to the frequency of the input pulse. This characteristic makes them perfect for positioning and machining applications. Stepper motors are used in many different types of machines, including 3D printers, CNC machines, camera platforms, X-Y plotters, and disk drives. They offer excellent precision, good rotational speed control, and high torque at low speeds.

Stepper motor driver are typically driven by pulse signals, which are electrical signals that alternate between ON and OFF repeatedly. Each ON/OFF cycle counts as one pulse, and one pulse turns the motor's output shaft one step. These pulses are called "H" and "L" signals. These signals are also used to control the motor's speed.

When operating a stepper motor, the operating voltage and current must be within the range of 5volts to 12V. A stepper motor power supply can be designed based on the specifications of the motor, but it should be regulated. A stepper motor driver can operate in one of two modes - pulse input mode or integrated controller mode. The latter uses an integrated controller to control the motor.