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AFE7900EVM: CURRENT VARIATION

Nirmal chaubisa
Prodigy 20 points
Part Number: AFE7900EVM
Other Parts Discussed in Thread: AFE7900,

HI SUPPORT TEAM

WE AHVE AFE7900 AND ZCU102 EVAL BOARD,WE ARE SETTING THE VOLTAGE 5V AND CURRENT 2.5A(FROM KEITHLY POWER SUPPLY)

EVAL BOARD TAKING CURRENT IN BETWEEN 780MA TO  600 MA (FLUATUATING)BUT FOR PROPER WORKING BOARD REQUIRED 685MA  STABLE CURRENT,

WE HAVE OBSERVED ON TP13   0.833V INSTEAD OF 1.8 V.

 BOARD IS NOT TAKING PROPER CURRENT SO SPI IS NOT WORKING FROM USB TO CONFIGURE AFE7900.COULD YOU HELP ME TO RESOLVE THE ISSUE

THANKS

  • 0
    TI__Mastermind 18031 points

    Hi Nirmal,

    The first issue is that the supply to the AFE7900EVM should be 5V with a current rating of at least 5A. If it is lower than 5A then the board will not fully configure. 

    Can you try with a supply that supports 5V, 5A? Also, is the 1.8V always 0.833V or only after programming? 

    Regards,

    DAvid Chaparro