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TPS543C20: Review for Vout=1.75V/35A

Shay Mor
Intellectual 870 points
Part Number: TPS543C20

Hi,

Please check the FB resistor for 1.75V/35A and review the schematic:

  • 0
    TI__Genius 17905 points

    Hi Shay,

    Does yellow indicate DNP/Do not populate components?

    The resistor divider values look correct. With 0.9V reference selected (51.1kohm on VSEL pin), the shown resistor divider of 8.66kohm top resistor and 28kohm bottom resistor will give an output voltage of 0.9V*(1+8.66/28) = 1.178V.

    There is no need for a feedback divider on the slave device. For the slave device, you can connect RSN to GND and float RSP.

    The rest of the schematic and components selected look fine (assuming yellow means DNP as mentioned at the beginning). Your design is very close to our 2PH EVM design - TPS543C20EVM-869.

    Regards,
    Kris

  • 0 in reply to Kris F
    Intellectual 870 points

    Thanks,

    Yes, yellow = DNP

  • 0 in reply to Shay Mor
    TI__Genius 17905 points

    Thanks for confirming. No other concerns from me.