We offer a wide range of products for motor-control applications. Our product set ranges from complete low power motor drivers to sensors and sensor feedback circuits to line drivers.
A motor drive controller, aka “motor drive,” is an automation device that controls the speed of a motor using electronic commutation. These drives are typically used with industrial synchronous AC and brushless DC (BLDC) motors. Although some are designed for specific motor types or families, a typical motor drive can usually control a range of motors.
The primary function within the motor drive is commutation, applying current through the motor windings at exactly the right time. Commutation is controlled through algorithms embedded in firmware residing on a microcontroller or digital signal processor (DSP). The motor control algorithms are usually very sophisticated as they must make the proper commutation decisions under many different motor load conditions. Some algorithms are matched to particular motors while others are more general purpose and can control a range of motors.
In order for the algorithms to run properly, they must have real-time input from the motor components. This information includes position of the armature, speed of rotation, current through the windings, and temperature. Input sensors provide this information and require specialized high precision analog circuitry.
The speed of a brushed DC motor is often controlled by pulse-width-modulated (PWM) input signals. The motor drive controller is connected directly to the motor power supply and the DC motor windings. It commutates the power input based on the input pulse width. There is typically no speed sensor feedback used in these relatively simple systems.
Very low driver on-resistance reduces power dissipation in 3mm x 3mm TDFN-EP
Four differential and two single-ended receivers with ±40V fault protection
This mbed®-compatible, Arduino® form factor shield allows rapid development of brushed DC motor applications. The shield contains four MAX14871 full-bridge DC motor drivers for driving up to 4 motors while two MAX5387 digital potentiometers provide the ability to set the motor current limit.
Explore our motor control solutions to find recommended products for various motor types.
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