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DRV2700 Problems

canberk unal
Prodigy 150 points
Other Parts Discussed in Thread: DRV2700

Hi, i am trying to use DRV2700 but something is wrong. I see 2.3V on Feedback pin. However, according to the datasheet i must see 1.3V. I am not connecting anything to the inputs and outputs. Also i see something like 2V on the input pins, and it is very weird. Here is the schematic of my board, 

  • 0
    TI__Expert 3791 points
    Hello,

    Thank you for posting onto the E2E forums. I will look into this and see what is going on here.

    Best Regards,
    Javier Palomo
  • 0
    TI__Expert 3791 points
    I have a few questions:
    -Are you measuring the voltage off of a simulation or on the board with a meter?
    - Is there a reason why you used a 0.22uF over a 0.1uF for C10 on the PVDD/BST Pin?
    -What is your the voltage across VBST to ground when your gain is at 28.8dB?
    -Just to be sure your resistor tolerances are within +/-5%?

    Best Regards,
    Javier Palomo