DRV8834RGER datasheet by Texas Instruments

DRV8834RGER 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 15V, but it's recommended to keep it below 12V for reliable operation.
• How do I choose the correct sense resistor value for my application?
  The sense resistor value depends on the motor current and the desired current sense accuracy. A general guideline is to choose a sense resistor value that results in a voltage drop of around 0.1-0.5V at the maximum motor current.
• What is the purpose of the internal voltage regulator, and can I use an external voltage regulator instead?
  The internal voltage regulator generates a 5V supply for the internal logic and can be used to power external circuitry. However, if an external voltage regulator is used, it's recommended to disable the internal regulator by tying the EN pin to GND.
• How do I implement overcurrent protection using the DRV8834RGER?
  The DRV8834RGER has a built-in overcurrent protection feature that can be enabled by connecting the OCP pin to a resistor divider network. The resistor values can be calculated based on the desired overcurrent threshold and the sense resistor value.
• What is the maximum frequency of the input signals that can be applied to the IN1 and IN2 pins?
  The maximum frequency of the input signals that can be applied to the IN1 and IN2 pins is 100 kHz. However, the actual frequency limit may be lower depending on the specific application and motor characteristics.