A separate controller PWMs {HEAD ~ the second switch} generating {TAIL ~ the output} at the secondary side of the transformer 
generating
A separate controller PWMs { HEAD ~ the second switch } generating { TAIL ~ the output } at the secondary side of the transformer
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH