When I was reading through the RECOM book of knowledge DC-DC, I found out that the SEPIC converter has more chance of having resonance feedback than the ZETA converter. They mention that the SEPIC has 4-pole feedback. Doesn't the ZETA has 4-pole feedback aswell? Why has the ZETA a more stable feedback function?
Both images can be found in the RECOM book of knowledge DC-DC.