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TPS62130A: Usage of Pin-Selectable Output Voltage function

Part Number: TPS62130A


The data sheet of TPS62130A and "SLVA489" of Application Report have the following description.

Voltage margining is a means of verifying the robustness of a product by intentionally adjusting its supply voltages to their limits and then evaluating the product’s performance to ensure that it still meets its specifications at the power supply’s extremes.

I would like to know what the Pin-Selectable Output Voltage (DEF) function is used for.
Is it a function to test whether the load in the subsequent stage is affected when the output voltage rises by 5% for some reason?
In that case, is it correct to understand that this function is for testing robustness on prototype boards, etc., and that it is generally turned off during mass production?



  • Hi Astro,

    Yes the DEF pin is used to evaluate the how the load is affected by a 5% increase in the nominal output voltage. This is typically used for testing purposes to ensure that the final design will still pass all tests at a +5% margin. It is generally turned off during production level builds.