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How to simulate noise from switching regulator LT8471 using LTSpice

Question asked by shyam.sunder91 on Aug 6, 2018
Latest reply on Aug 9, 2018 by shyam.sunder91

we have few designs based on LT8471 which are creating noise in the analog cards whom they are powering

to avoid this we have incorporated local LDO with output pi filters after the DC-DC

but still we see few problems of noise at the Op-Amp input stages

 

can you please help us in how to perform noise analysis of switching supplies using LTspice ?

 

I want to experiment with multiple pi filters and varied load conditions, kindly help

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