• State TI Thinks Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 29 subscribers
  • Views 432 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

DRV8833: DRV8833

saravanan krishnan
Prodigy 50 points
Part Number: DRV8833
Other Parts Discussed in Thread: DRV8210, DRV8212, DRV8837

Tool/software:

Hello Team,

Is the DRV8833 Motor Driver Suitable for a 4V Planetary DC Gear Motor with the Following Characteristics:

  • No-load Current: 0.25A
  • Maximum Current: 1.15A

Regards,

K.Saravanan

  • 0
    TI__Mastermind 40905 points

    Hello Saravanan,

    saravanan krishnan said:

    Is the DRV8833 Motor Driver Suitable for a 4V Planetary DC Gear Motor with the Following Characteristics:

    • No-load Current: 0.25A
    • Maximum Current: 1.15A

    The DRV8833 is a dual H-bridge BDC driver. It can operate down to 2.7 V and support up to 2 A momentary peak currents for single H-bridge. Based on this it should be able to support the described BDC motor. The bridges can be connected in parallel to double the drive capacity.

    Other single H-bridges that may be suitable are DRV8837, DRV8210, DRV8212. Thank you.

    Regards, Murugavel 

  • 0 in reply to Murugavel4637
    Prodigy 50 points

    Subject: Increasing 4V DC Motor Speed with DRV8833

    Dear Muragavel,

    We have been testing a 4V DC Motor with the DRV8833 driver.

    • Current Configuration:

      • AIN1: High (3.3V)
      • AIN2: Low (0V)
      • BOUT1: 3.8V (VM - Battery Voltage)
      • BOUT2: 0V

    • Observations:

      • Scenario 1: 4V DC Motor + DRV8833 + 3.7V Battery - Nominal Speed
      • Scenario 2: 4V DC Motor + Reference Device (Unknown Driver IC) + 3.7V Battery - Higher Speed

    In both scenarios, the Motor and 3.7V Battery remain the same.

    We would greatly appreciate your suggestions on how to increase the motor speed in our setup (Scenario 1) using the DRV8833 driver.

    Sincerely,

    K. Saravanan.

  • 0 in reply to saravanan krishnan
    TI__Mastermind 40905 points

    Hi Saravanan,

    The DRV8833 is a simple driver. I do not see anything unusual in the way you were using it. I assume the DRV8833 breakout board does not have sense resistors and the AISEN and BISEN pins are directly connected to GND.

    saravanan krishnan said:

    Observations:

    • Scenario 1: 4V DC Motor + DRV8833 + 3.7V Battery - Nominal Speed
    • Scenario 2: 4V DC Motor + Reference Device (Unknown Driver IC) + 3.7V Battery - Higher Speed

    Could you please measure the voltage across the motor terminals with each of this drivers? Not sure if the reference device board had a voltage boost that could have higher speed. Any difference in voltages across the motor would mean reduced or increased speed. Thank you.

    Regards, Murugavel