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XM3 Module RTD Temperature Detection

Nevermore
Nevermore Contributor Level 1
edited July 2023 in Module Products

Hello Wolfspeed，

I want to know how the output of XM3 module RTD is detected with DSP28379D?

I noticed in the CRD600DA12E-XM3 schematic that the RTD signal is connected to the GPIO40-GPIO47 pins of the DSP28379D, how does the DSP determine the temperature of the module from the frequency of the RTD output?

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Comments

  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 4

    Thank you for your post, it has been approved and we will respond as soon as possible.

  • JHayes
    JHayes Wolfspeed Employee - Contributor Level 3

    Hi Nevermore,

    By default the temperatures are read via the ADCs as highlighted below. This analog signal is derived from the frequency encoded RTD signal that is reported back from the gate drivers.

    The RTD signals going into GPIO40-47 are provided if it is desired instead to use the ECAP peripheral to decode the frequency encoded temperature.

    image.png
    image.png

    Thanks,

    Jonathan

  • TBhatia
    TBhatia Wolfspeed Admin - Contributor Level 5

    Hi, I hope that this answered your question. I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.

This discussion has been closed.