{TAIL ~ The power converter} has {HEAD ~ at least one switch} that is operated at a switching frequency that results in switch current flows through the switch 
{ TAIL ~ The power converter } has { HEAD ~ at least one switch } that is operated at a switching frequency that results in switch current flows through the switch
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH