{HEAD ~ A second FET switch}, operating out of phase with the first switch, allows {TAIL ~ the storage capacitor} to discharge through an inductor back to the unregulated input source 
allows
{ HEAD ~ A second FET switch } , operating out of phase with the first switch , allows { TAIL ~ the storage capacitor } to discharge through an inductor back to the unregulated input source
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH