LMZ23610: app note SNVA538 - input impedance of a buck converter

Hi Fausto,

Most of the references in the SNVA538 app note point to actual books. Unfortunately I do not have these books available to find the actual source of the equation.  In order to give you more information about this equation there is a publicly available slide-deck that does a quick overview of the buck input impedance. The slide-deck doesn't go through indepth detail of this, but does provide further insight on the open loop equation.

Hope this answers your question.

Regards,

Jimmy