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BQ500215EVM-648/BQ51025EVM-649

I just received these eval kits.  When I connect the EVM-648 to my 12V DC supply it is drawing more than 3.5A making the supply crowbar.  The documentation indicates that the current draw should be between 2A-3A.  Is the documentation correct or do I just need more power?

  • Domenic,

    Under what conditions do you get  over 3.5A?  What load do you have on the EVM-649?

    If you get over 3.5A without anything on the EVM648, there is a problem in the system. 

    At 12V and 3.5A, your TX is exceeding its power requirements.  (42W)  Please insure the supply positive and negative are hooked up properly.  This is a common mistake and can cause damage to the EVM.

    Regards,

    Dick