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Thread: PCB configuration - how to?

  1. #1
    Beginner Beginner TondGy is on a distinguished road
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    PCB configuration - how to?

    Hi guys,
    What are the main things to consider when designing a PCB for SiC MOSFETs?
    Thanks.

  2. #2

    Infineon Employee
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    electricuwe is on a distinguished road
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    The key is to consider that the devices can switch up to 10 x faster in regard to di/dt than Si devices. Hence keeping stray inductance low is essential in DC-link as well as in gate connection:

    Best is to work with wide tracks, keeping the return path on an adjacent layer of the PCB. I can provide more details, if you specify the device you are using.
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

  3. #3

    Infineon Employee
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    Harmon is on a distinguished road
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    For the PCB layout, general things to consider are...

    1. Gate source and power source tracks must be separated to avoid the noise interference to the gate signal.
    2. Power source and drain tracks are designed as short as possible.
    3. Gate resistors and gate driver IC should be placed close to their corresponding MOSFETs

    Detailed information can also be found in the application note link below.

    https://www.infineon.com/dgdl/Infine...61c27fbcda0aae
    The views expressed here are my personal opinions, have not been reviewed or authorized by Infineon and do not necessarily represent the views of Infineon.

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