Miniature stepper motor driver JVL

Specially designed Step Motor Driver can be directly mounted on the motor

JVL has developed the smallest step motor driver to date, SMD73. The Driver measures only 52.4 x 52.4 mm and can be directly mounted on the motor. It fits onto most types of high-torque motor, and can of course also be mounted on a surface.
The PCB is equipped with an 8-pin connector. 4 terminals are used for the motor connection, 2 for the external power supply, and 2 are used to control the motor via step-pulse and direction signals. The Driver supplies 2.6A RMS in each phase, and current is automatically regulated to 0.8A when the motor is not receiving step pulses. The Driver controls the motor in half-step mode, which results in 400 steps/rev. The Driver can handle up to 20 ksteps/sec and a "half-step" current regulation ensures that the current is increased by a factor of 1.4 every second step in order to yield maximum motor torque.
The Driver can be powered from 15-28VDC up to 5A. It is equipped with a green LED which indicates that power is on, and a red LED which indicates an error condi-tion.
For other applications, the Driver is available with step resolutions of 1/1, 1/4, 1/8 steps/rev., and with selectable motor current.

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