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Use DSP28335 to drive CGD1200HB2P-BM2

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SilvaDeng
SilvaDeng Contributor Level 1
edited January 28 in Module Products

I am using the DSP28335 chip to input PWM signals into the CGD1200HB2P-BM2. However, the CGD1200HB2P-BM2 can only receive differential signals. What chip should I choose to convert a single-ended 3.3V signal into a 5V differential signal? Is there a typical circuit for the CGD1200HB2P-BM2 device?

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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.

  • AustinC
    AustinC Wolfspeed Admin - Contributor Level 4
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    Hi SilvaDeng,

    I recommend using the differential transceiver companion card (CGD12HB00D). You will feed the single-ended PWM signals from your F28335 to this transceiver card and then connect the differential outputs of the transceiver card to the BM2 gate driver. A similar example is shown below.

    https://forum.wolfspeed.com/home/leaving?allowTrusted=1&target=https%3A%2F%2Fwww.wolfspeed.com%2Fproducts%2Fpower%2Fcgd12hb00d%2F

    image.png
    image.png

    Best Regards,

    Austin C.

  • ChrisN
    ChrisN Wolfspeed Admin - Contributor Level 4
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    Hello SilvaDeng,

    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.

    Thanks,

    Chris N.

This discussion has been closed.