The maximum current rating of the DRV8829PWP is 2.5A per phase, but it can be limited by the thermal performance of the PCB and the motor being driven.
The microstepping mode on the DRV8829PWP is configured using the M0, M1, and M2 pins. The datasheet provides a table to determine the correct pin settings for the desired microstepping mode (e.g., full-step, half-step, quarter-step, etc.).
The TRQ (Torque) pin on the DRV8829PWP is an analog output that indicates the motor current. It can be used to monitor the motor current and adjust the motor drive settings accordingly.
The DRV8829PWP has built-in overcurrent protection (OCP) that limits the current to a safe value in case of an overcurrent event. The OCP threshold can be adjusted using external resistors. It's recommended to use a suitable OCP threshold to prevent damage to the motor and the driver.
The recommended layout and routing for the DRV8829PWP involves keeping the high-current paths short and wide, using a solid ground plane, and separating the analog and digital signals. The datasheet provides guidelines for PCB layout and routing.
DRV8829PWP datasheet
by Texas Instruments
