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TX7332EVM: Assistance Needed with TX7332EVM board U1 and U3 Regulators Issue

Rouzbeh Molaei
Prodigy 95 points
Part Number: TX7332EVM
Other Parts Discussed in Thread: AFE5832LP, , AFE5832LPEVM

Dear TI,

I hope you are doing well. I am currently working on a wearable ultrasound sensor project, utilizing the TX7332EVM and AFE5832LP in conjunction with a Xilinx FPGA. I have completed the coding and hardware engineering aspects of the project.

However, I am encountering an issue when trying to connect the TX7332EVM to the AFE5832LP. Despite following all the connection points specified in both EVM board user manuals, it appears that either the U1 or U3 regulators on the TX7332EVM are not functioning properly. This, in turn, prevents the CPLD from working.

As I have devoted considerable time and effort to this project, I am eager to test my prototype. I kindly request your assistance in resolving this issue as soon as possible. Your help would be greatly appreciated.

Thank you in advance for your support.

Sincerely,
Rouzbeh

  • 0
    TI__Intellectual 1030 points

    Hi Rouzbeh,

    Glad to hear that you were able to get all the hardware and the software aspects of the project working.

    Could you please explain how you have made the connections from the TX7332EVM to the AFE5832LP device? Also, how are you powering the AFE5832LP device? Are you using the AFE5832LP EVM?

    Regards

    Savyan

  • 0 in reply to Savyan Kanisserry
    Prodigy 95 points

    Dear Savyan,

    I hope this email finds you well. I'm reaching out to seek your guidance on an issue I've encountered with the AFE5832LPEVM and TX7332EVM boards.

    As you know, I've been using the AFE5832LPEVM in my project. To connect it with the TX7332EVM, I designed a custom pin header to the SMA pins PCB. I powered the AFE5832LP EVM with its 5V barrel cable and supplied the TX7332EVM with ±5V and ±10V on J2 and J1 pins, respectively, following the user manual instructions.

    However, I suspect I may have made an error in integrating the ground for all the boards. My concern is that the TX7332EVM board might have been damaged, although I believe it should be more robust than this. I've observed that either the U1 or U3 regulators on the TX7332EVM are not functioning properly, which in turn prevents the CPLD from working.

    As I'm facing a tight deadline, I kindly request your assistance in troubleshooting this issue. Could you please advise me on the steps to diagnose and potentially repair the board, or help facilitate a replacement if necessary? Your prompt support would be immensely appreciated.

    Thank you in advance for your help and expertise.

    Best regards,

    Rouzbeh

  • +1 in reply to Rouzbeh Molaei
    TI__Intellectual 1030 points

    Hi Rouzbeh,

    Is the TX7332EVM working independently (when it is not connected to the AFE5832LPEVM)? What is the current limit you are keeping for the +/-5V supplies? If the current limit of the external +5V supply is low, this can lead to the supply dropping and could explain the U1/U3 regulators not working. 

    Regards

    Savyan

  • +1
    Prodigy 30 points

    Dear

    I'm sorry to hear that you're encountering issues with connecting the TX7332EVM and AFE5832LP in your wearable ultrasound sensor project. I understand how frustrating it can be to encounter problems after devoting so much time and effort into a project.

    To address your issue, it sounds like the regulators on the TX7332EVM may not be functioning properly, which is preventing the CPLD from working. In this case, I would recommend checking the connections between the regulators and the CPLD to ensure they are properly connected.

    If the issue persists, it may be helpful to perform some diagnostic tests to identify the root cause of the problem. This could involve checking the power supply, testing the regulators with a multimeter, or examining the soldering connections on the board.

    If you're still having trouble resolving the issue, please don't hesitate to reach out to me for further assistance. I'm here to help and will do my best to support you in getting your prototype up and running.

    Best regards

  • 0 in reply to peter alex
    Prodigy 95 points

    Dear Peter,

    Thanks for your help. I would do all the tests you mentioned and get to you back soon.