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TPS543B20: Schematics Review-TPS543B20

Shifali N
Expert 2125 points
Part Number: TPS543B20
Other Parts Discussed in Thread: TPS543C20A, TPS543C20

Hi Team,

I am using TPS543B20RVFT in my design. I have attached my circuit design and design calculator sheet for review. Please provide your feedbacks on the same.

Vin=5V

Vout=0.85V

Vout_Cap=GRM21BR60J107ME15K

L= XAL7070-161MECTPS543B20RVFT.pdfTPS543B20_TPS543C20A_TPS543C20_Calculator-06072023.xlsx

Thanks,

Shifali N

  • 0
    TI__Intellectual 935 points

    Hi Shifali,

    We first recommend adding a placeholder for a feedforward capacitor. In order to do this, you would need to include a feedback resistor divider. In order to include a feedback resistor divider, you would need to decrease the voltage of Vsel with the Rvsel resistor.

    Our second recommendation would be that you place a placeholder 2.2nF - 10nF capacitor between PVIN and PGND as close to the IC as possible. This will better help minimize switch node ringing noise.

    Best regards,

    Will Appelt