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Original question:

DRV8837: DRV8837

DRV8837: DRV8837 clamping diodes

Rick Adolf
Intellectual 310 points
Part Number: DRV8837

given that the DRV8837 doesn't have internal clamping diodes, for a motor or solenoid application, these will need to be added externally, correct? If so, do you have a similar device that has the clamping diodes integrated or will the DRV8837 with external diodes be a smaller solution?

Thanks!

  • 0
    TI__Intellectual 960 points

    Hello Rick,

    Thank you for reaching out! The short answer is "no" you don't need to add external diodes. But to confirm, can you explain what these external diodes are for?

    Thank you,

    Audrey 

  • 0
    Genius 5040 points

    Hi Rick,

    Rick Adolf said:
    given that the DRV8837 doesn't have internal clamping diodes, for a motor or solenoid application, these will need to be added externally, correct?

    It should drive DC motor or solenoid without additional clamping diodes. When driving solenoid with half bridge, the top and lower FETs are working in synchronous so when top FET turned off, the lower FET turned on to conduct the inductive recirculation current in the solenoid.

    Brian