As the input voltage VIN 602 increases, the switching duty cycles are increasing because the buck boost converter 302 is in {HEAD ~ the valley control mode} of {TAIL ~ operation} 
of
As the input voltage VIN 602 increases , the switching duty cycles are increasing because the buck boost converter 302 is in { HEAD ~ the valley control mode } of { TAIL ~ operation }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL