Brush DC motors are the most widely used drivers due to their low cost and simple drive control options. Typical brush DC motors consist of a rotating electromagnet surrounded by a permanent magnet. Rotational torque is produced by the interaction of the magnetic fields and continuous rotation is produced by changing the polarity of the rotating coil with a mechanical commutator and brushes.
Typical brush DC motor drivers consist of a half bridge for single direction operation and an H-bridge configuration for bidirectional control. PWM (Pulse Width Modulation) control can be used to regulate motor speed, torque, or position.
Allegro offers a complete lineup of DC motor drivers for all markets, including office automation, automotive and industrial. Depending on the needs of a given application, Allegro IC solutions can include features such as:
Note: "K" suffix denotes automotive grade product (AEC-Q100 qualified).
The following devices have been discontinued: A3949