45-V, 1.6-A bipolar stepper motor driver with current regulation and 1/32 microstepping

The DRV8824 provides an integrated

motor driver solution for printers, scanners, and other automated equipment

applications. The device has two H-bridge drivers and a microstepping indexer, and

is intended to drive a bipolar stepper motor. The output driver block consists of

N-channel power MOSFETs configured as full H-bridges to drive the motor windings.

The DRV8824 is capable of driving up to 1.6 A of current from each output (with

proper heatsinking, at 24 V and 25°C).

A simple STEP/DIR interface allows

easy interfacing to controller circuits. Mode pins allow for configuration of the

motor in full-step up to 1/32-step modes. Decay mode is configurable so that slow

decay, fast decay, or mixed decay can be used. A low-power sleep mode is provided

which shuts down internal circuitry to achieve very-low quiescent current draw. This

sleep mode can be set using a dedicated nSLEEP pin.

Internal shutdown functions are

provided for overcurrent, short circuit, undervoltage lockout, and over temperature.

Fault conditions are indicated through the nFAULT pin.