poe 1.3 improvements for emc includes MPS layout sugestions

decreased coupling between poe lines and  the gnd plane
added vias to stich main gnd planes
decreased the peak current through the transformer
inductor based pi filter on the poe output
decreased coupling to gnd of the poe "noise path"
added parallel mosfet capacitance to poe
moved fb line fo the dcdcs away from inductors

Signed-off-by: Dominik Sliwa <[email protected]>

Author: randomplum

CM4.kicad_sch

@@ -1616,6 +1616,7 @@
     )
   )
 
+
   (junction (at 112.395 146.05) (diameter 0.9144) (color 0 0 0 0)
     (uuid 056f9cb3-715f-434f-b47c-815c372d9a5b)
   )

ControlRTC.kicad_sch

@@ -580,6 +580,7 @@
     )
   )
 
+
   (junction (at 152.4 35.56) (diameter 0.9144) (color 0 0 0 0)
     (uuid 360bedc1-8522-4c8c-bbbd-baca6d69d40e)
   )