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  • TI Thinks Resolved

TIDA-00643: Current Capacity Limitation

Part Number: TIDA-00643

The reference design specifies a current limit of 15 amps.

I'm looking to design a version of this motor driver that can handle up to 30 amps.

The design guide doesn't appear to list which components are the limiting ones. I assume it's at least the mosfets, but I was wondering if there is anything else that will beed to be replaced?

Thanks!

- Keenan

  • Hi Keenan,
    The Mosfets used on that reference design are capable of handling 30amps.
    The limiting factor would be the board itself. You would need to modify your layout to account for your power requirements. Another concern at that high current would be to have appropriate thermal dissipation.

    Luis Riveros
    Motor Applications Team

  • In reply to Luis Riveros:

    Got it. So the 15 amp is only layout and thermally limited.

    Any limitation on the current sense adcs?

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