DRV8828PWP

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The DRV8828PWP is a high-fidelity motor driver IC designed for driving and controlling unipolar stepper motors and bipolar brushed DC motors. This device integrates an on-die full-bridge driver and a built-in microstep indexer to support motor control applications that require a high degree of accuracy and torque control. As a part of the PMIC - Motor Drivers, Controllers, it provides a highly efficient power stage design which can deliver up to 1.7 A of continuous current. Additionally, it features a wide operating voltage range that allows it to be used in both low-voltage and high-voltage applications.

The primary application field of the DRV8828PWP is motion control. It is ideal for applications such as industrial automation, robotics, and CNC motion control systems. The device has two independent full-bridge channels which can drive two phase winding of a bipolar stepper motor, making it perfect for controlling two phase stepper motors. It can also operate as a H bridge for driving a bipolar brushed DC motor in either direction.

The device\'s microstepping capability allows it to provide higher output resolution and better motor control than other motor drivers. The microstep indexer can generate microsteps from 32 up to 256 across the motor’s full-step range and supports both quarter and eighth microstepping. In addition to the microstepping, the DRV8828PWP also offers several modes for controlling the motor’s speed and torque, such as velocity control, torque control, and current control.

Like many other motor drivers, the DRV8828PWP features a number of protections to ensure its long-term reliability. It includes overcurrent protection and thermal protection to safeguard against excessive current flow and excessive heat. It also has an anti-cogging feature that helps to reduce motor cogging, which is a noticeable reduction in motor power that can occur when the current is set too low.

In terms of its working principle, the DRV8828PWP utilizes a simple H-bridge motor driver design. Its full-bridge output stage contains four power switches, comprised of two N-channel MOSFETs and two P-channel MOSFETs. When the bridges are driven, the N-channel MOSFETs conduct, allowing current to flow to the motor through its windings, while the P-channel MOSFETs act as a path for the current to return. The voltage applied to the motor’s two phase windings determines the direction of the current, making it easy to control the direction of rotation or the speed of the motor.

In summary, the DRV8828PWP is a high-performance motor driver IC designed for driving and controlling unipolar stepper motors and bipolar brushed DC motors. It provides an excellent power stage design and an on-die microstep indexer to achieve high accuracy and torque control. With its wide operating voltage range and various protection features, it is well-suited for use in a variety of motion control applications.

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