DRV8821DCAR datasheet by Texas Instruments

DRV8821DCAR Frequently Asked Questions (FAQs)

• What is the maximum current rating of the DRV8821DCAR?
  The maximum current rating of the DRV8821DCAR is 2.5A per phase, but it can be limited by the thermal performance of the PCB and the motor.
• How do I configure the microstepping mode on the DRV8821DCAR?
  The microstepping mode can be configured by setting the M0, M1, and M2 pins to select one of the 32 microstepping modes. The specific configuration depends on the desired microstepping mode and the motor characteristics.
• What is the purpose of the TRQ pin on the DRV8821DCAR?
  The TRQ pin is a torque regulation pin that allows the user to adjust the torque limit of the motor. It can be used to prevent motor stall or to limit the maximum current.
• How do I troubleshoot the DRV8821DCAR if the motor is not spinning?
  Check the power supply voltage, motor connections, and enable pin (EN) to ensure they are properly configured. Also, verify that the step and direction pins are being driven correctly and that the motor is not overheating.
• Can I use the DRV8821DCAR with a bipolar stepper motor?
  Yes, the DRV8821DCAR can be used with a bipolar stepper motor. However, the motor windings need to be connected in a unipolar configuration, and the motor's phase sequence needs to be adjusted accordingly.