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TPS543C20: TPS543C20RVFT Schematics Review

Nachiketh Karanth
Intellectual 500 points
Part Number: TPS543C20

Tool/software:

Hi,

Please verify the schematics for Vin = 12V and Vout = 0.75V. Sense pins of regulators are connected to sense pins of IC, please verify if that part is correct.

Thanks

/cfs-file/__key/communityserver-discussions-components-files/196/1563.TPS543C20RVFT.pdf

  • 0
    TI__Expert 5156 points

    Hello, 

    I will review and get back to you shortly

    Best regards,

    Britton

  • 0 in reply to Britton Jones
    TI__Expert 5156 points

    Hello, 

    I assumed the maximum load current of 40A for this application, given that the ILIM was set appropriately for a 71A over-current protection. If the load current requirement is significantly different, you may recheck the design using the attached excel calculator tool: TPS543C20_12VIN_0p75VOUT_Excel_Tool.xlsx

    My comments on the schematic: 

    1. The sense point connections are okay. These can be connected directly to the load for remote sense, which I believe is how you have them connected. 

    2. The bottom feedback resistor R2579 is populated with a 0ohm resistor. This needs to be removed so that VOUT is not tied directly to GND through the 0ohm resistors.

    Best regards,

    Britton