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TPSM82864A: TPSM82864A - VSET resistor

Zeev Gerber
Intellectual 500 points
Part Number: TPSM82864A

Hi,

Who the accuracy of the resistor at VSET/MODE pin influence on the TPSM82864A accuracy?

is the 1% resistor accuracy will make the same TPSM82864A accuracy as the 0.1% resistor accuracy?

regards

Zeev Gerber

  • 0
    TI__Guru*** 145990 points

    Hi Zeev,

    No, the VSET resistor's accuracy does not influence the output voltage accuracy.  Section 8.4.4 in the D/S explains about the VSET pin and the R2D converter.  This section links to my white paper (https://www.ti.com/lit/wp/slyy180/slyy180.pdf) which answers your question in the "Tighter output voltage accuracy" section.

    You must ensure that the VSET resistor remains within the required 1% tolerance (with 200 ppm/C temperature coefficient) stated on page 4 of the D/S.

    Thanks,

    Chris