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CRD-03600AD065E firmware not match

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USER_KE
USER_KE Contributor Level 1
edited December 2025 in General

hello tech team：

I'm working with CRD-03600AD065E-L reference design，but i found the firmware you provide not match the Schematics ，the firmware is 1ph3interleaved totem pole topology。Could you help me corrected？thank you.

Screenshot 2025-12-05 112821.png
Screenshot 2025-12-05 112923-2.png

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  • Forum_Moderator
    Forum_Moderator Wolfspeed Employee - Contributor Level 5
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    Thank you for your post, it has been approved and we will respond as soon as possible.

  • SGhosh
    SGhosh Wolfspeed Employee - Contributor Level 1
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    Hello,

    Thank you for your inquiry. We appreciate your interest and want to clarify the concern.
    The CRD-03600AD065E-L firmware was modified based on the TI reference design (TIDA 01604). While the TI design incorporates their PowerGUI firmware, our approach utilizes a CAN bus in conjunction with the firmware code to operate the hardware.

    To clarify, the code is accurate and specifically tailored for the CRD-03600AD065E-L model. However, please note that the PowerGUI referenced in the forum image is outdated, and the current firmware code is not associated with it. For detailed operating instructions, I encourage you to refer to the user guide, which should provide clear guidance on using the provided code and CAN communication with the CRD-03600AD065E-L.

    If you have any further questions or need additional assistance, please don’t hesitate to reach out.

    Thanks,

    Sumana G

    USER_KE
  • USER_KE
    USER_KE Contributor Level 1
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    Thank you for your prompt reply. I have noticed the modification of the source code based on TIDA 01604（from 3phase interleaved PFC to 1phase PFC）but i have some doubts，i don't understand： why the phase shift of high-fre FET relative to low-fre FET is 120 degrees still？

    Screenshot 2025-12-16 095423.png

    I will continue to monitor your products and applications，thank you.

  • SGhosh
    SGhosh Wolfspeed Employee - Contributor Level 1
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    Thank you for your inquiry. I’d like to clarify that the low-frequency PWM is generated at line frequency, which is not connected to this part of the code. The Base 4 PWM functions as a slave generator, deriving its reference from the Base 1 master PWM. In essence, Base 4 represents the high-frequency PWM signal, while the low-frequency signals are generated by the AC_FREQ ramp generators.

    For further details on how the high-frequency output pulse mode is selected, I suggest looking into the epwm.h file, which should provide a more comprehensive understanding.

    Thanks,

    Sumana

  • SGhosh
    SGhosh Wolfspeed Employee - Contributor Level 1
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    I hope that 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.

    Thanks,

This discussion has been closed.