DRV8818PWPR datasheet by Texas Instruments

DRV8818PWPR Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the VM pin?
  The maximum voltage that can be applied to the VM pin is 40V, but it's recommended to keep it below 35V for reliable operation.
• How do I adjust the current limit on the DRV8818PWPR?
  The current limit can be adjusted by changing the value of the sense resistor (Rs) connected to the CS pin. A smaller Rs value will result in a higher current limit.
• What is the purpose of the EN pin, and how do I use it?
  The EN (enable) pin is used to enable or disable the motor driver. When EN is high, the driver is enabled, and when EN is low, the driver is disabled. This pin can be used to implement a shutdown or standby mode.
• How do I protect the DRV8818PWPR from back-EMF when the motor is turned off?
  To protect the DRV8818PWPR from back-EMF, a freewheeling diode (D1) should be connected across the motor terminals. This diode allows the back-EMF to be safely dissipated.
• What is the maximum operating frequency of the DRV8818PWPR?
  The maximum operating frequency of the DRV8818PWPR is 100 kHz. However, the actual operating frequency may be limited by the motor and the application.