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UCC21710: DNP Resistor in UCC21750QDWEVM

Part Number: UCC21750

Dear experts,

is there was any intention, when putting this R3 (Do not populate) in schematic. ? i feel its a useless one ! 

Thanks and regards

Anoop

  • Hi Anoop,

    The purpose of that resistor is to damp inductive spikes due to long cables to a bench power supply. It is not necessary in a system schematic but reduces the effect of the bench supply on the device for standalone EVM testing.

    Hope this helps!

    Best,

    Pratik