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rdeakers
Prodigy 700 points
Other Parts Discussed in Thread: TPS40200

The caculate button in the components "what if" section does not properly calculate the lower votlage setting resistor if the upper resistor is change. Discovered this on a TPS40200 design.

 

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    TI__Intellectual 1280 points

    I just checked this and it appears to be working fine on the website?  So I'm not sure what's going on with your design.  can you send some additional details?

    One thing to note, the lower divider value is not in the list of components on the what if page.  It only updates on the schematic if you save a change to the Top Divider value (namely R1 in most cases)

    I have noted that sometimes the tool is using 2% tolerance or E48 standard values instead of 1% E96 values.

    Thankx