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Class-D amplifier

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Potential
Potential Contributor Level 1
edited July 2025 in Module Products

Want to design full fetch switch mode amplifier, configuration will be full bridge, switching frequency atleast 500KHz,available bridge supply 400volts, after full bridge need to put a LPF(LC type) to extract sine wave signal which should have peak to peak 350Vpp, required output power 100watt . suggest the possible module for this design, heat sink design, gate driver module and safety protocols.

regards

S rabi das

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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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    Hello Potential,

    With only 100 W of output power required, your application will be better served with 650 V discrete components. I would recommend selecting the highest RDS-on option available (the 120 mΩ device), which will be the lowest cost and exhibit the lowest switching losses.

    Wolfspeed's 650 V discrete device options: https://www.wolfspeed.com/products/power/sic-mosfets/?blockingVoltage=650%20V

    Best Regards,

    Austin C.

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