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Over current Protection in CRD25DA12N-FMC

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GayanvDissanayake
GayanvDissanayake Contributor Level 1
in General

"Hi! Could you please clarify whether the overcurrent protection in the 25kW SiC Wolfspeed Converter (CRD25DA12N-FMC) is implemented as a built-in tripping mechanism or through your CCS code?"

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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.

  • ChrisN
    ChrisN Wolfspeed Employee - Contributor Level 2
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    Hello,

    The CRD25DA12N-FMC does not include a built-in overcurrent tripping mechanism. The trip can be configured in CCS code by using the high/low limit of the Post Processing Blocks (PPBs) feature of the controller analog-to-digital converters (ADCs). The PPBs can be used to monitor if the current measurement exceeds a pre-defined value. Alternatively, the "Overcurrent References" resistor dividers on the schematic can be adjusted to a pre-defined trip voltage which equates to a relevant current. An interrupt can be configured in the controller to trigger when one of the overcurrent detection operational amplifier circuits is tripped.

    Thanks,

    Chris N.

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