A3983SLPTR-T

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PMIC - Motor Drivers, Controllers have become increasingly important for various industry applications. As their applications have become more widespread, new motor drivers, controllers and integrated motor control solutions emerged to meet the needs of ever-increasing system complexity. The A3983SLPTR-T is a new motor driver, controller and integrated motor control solution from Allegro MicroSystems.

The A3983SLPTR-T is an integrated bipolar stepper motor driver and controller solution that offers ultra-low R DS(on) internal high side power MOSFETs. It is designed to drive a wide range of stepper motors, with high torque-density, low inrush current, and improved motion control performance. Up to nine analog and digital control inputs are provided, allowing for a high degree of versatility in control modes.

The A3983SLPTR-T employs a full-bridge structure with dedicated logic inputpins that enable internal regenerative braking, which helps reduce heating of the motor and controller and improves torque control. By providing an external voltage source (VCS) it can accelerate or decelerate the motor using current and/or velocity mode control. The integrated dual ESD protection and full isolation from the motor drive increases system immunity to external noise.

The A3983SLPTR-T supports the various types of motor control, and can be used for micro-stepping or step/direction control. It also offersautomatic idle current reduction and user-programmable voltage boost feature for improving torque and reduces overall system current consumption. The optional integrated voltage regulator provides power up to 2 V, allowing for variable speed control.

When it comes to applications, the A3983SLPTR-T can be used in a variety of stepper motor control applications such as computer peripheral controls, 3D printers and automated light fixtures. Additionally, it can be used in applications such as robotic arms, linear actuators, DC motors and brushless DC motors.

The working principle of the A3983SLPTR-T involves connecting the stepper motor to the output bridge, providing the logic inputs and setting the current levels. Each stepper motor has two coil windings, each of which is connected to one of the two bridges. The two bridges together hold the current of the motor and the logic inputs determine the direction of the motor and the amount of current provided to each winding. The controller then provides pulse-width modulation (PWM) to control the motor speed. The motor will accelerate and decelerate in response to the logic inputs and current levels.

In conclusion, the A3983SLPTR-T is an integrated motor driver, controller and integrated motor control solution that offers various features, allowing for a variety of applications and a high degree of control. It is capable of performing many different motor control functions, including micro-stepping, step/direction control and torque control. With its low R DS(on) internal high side power MOSFETs and integrated dual ESD protection, the A3983SLPTR-T is a perfect choice for many different motor control applications.

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