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Input Power Rail detection circuit

Question asked by DavidZ on Mar 31, 2014
Latest reply on Mar 31, 2014 by LucaV

I have the circuit as in attached image.

 

It will auto detect the input power rail VPWR ( 12V or 5V ).

 

If the input power rail is 12V, the VPWR_SEL will be “high” otherwise VPWR_SEL will be low.

 

My co-worker keep bothering me for long time for this circuit.

 

Do you thank it will work properly as what I want ?

 

Very appreciate for your suggestions.

 

AD8541 Circuit.png

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