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.

  • Resolved

DRV10970EVM: Selecting the correct eval board

Prodigy 50 points

Replies: 3

Views: 362

Part Number: DRV10970EVM

Hello,

I've searched through the forum but couldn't find a solid answer, so I'm hoping my post is not a duplicate.

I have an application where I currently have a brushed DC motor that I would like to replace with  a 3 phase BLDC with hall sensors. Specs are as follows:

- Automotive application (12v DC, range 11-5v)

- PWM speed control of the current motor, would like to reuse that signal for the BLDC

- Current draw of the brushed motor is about 2A max. Expecting the BLDC will be lower (just guessing here)

- BLDC is a 42BLF01, 17vDC Nom, no load speed of 10,000rpm, rated torque=0.063 N-m, back EMF constant=1.79 V/kRPM

My question is: I'm looking at DRV10970EVM but not sure it's the right eval board to prove out the replacement motor. Do you have suggestions for the right board? My goal is to A) prove out the replacement motor, and B) use it as a reference circuit design for manufacutring.

Thank you in advance for the help!

Brian

  • Brian,

    Yes, DRV10970EVM is a good choice for checking out the conversion from BDC motor to sensored BLDC motor. Current peak capability is 1.5A, but as you said the BLDC should consume less current than your BDC solution.

    Note, however, that DRV10970 is not automotive qualified.

    Best of luck,

    Brian

  • In reply to Brian Schmidt:

    Excellent, thank you! Is there an "auto qualified" alternative? And we're talking old cars (pre-1990) so not sure it really matter. Mostly curious.
    Thanks again.
  • In reply to Brian Induni:

    Brian,

    No our team doesn't have an auto qualified version of a hall sensor BLDC motor driver at this time.

    Thanks,

    Brian

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.