Field effect transistors of which ON voltage is lower than {HEAD ~ the forward voltage} of {TAIL ~ a diode} are provided in each of the synchronous rectifier circuits 
of
Field effect transistors of which ON voltage is lower than { HEAD ~ the forward voltage } of { TAIL ~ a diode } are provided in each of the synchronous rectifier circuits
OTH OTH OTH OTH OTH OTH 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 OTH OTH