The controller comprises a comparator and a current sense resistor for comparing a reference voltage with {HEAD ~ a current sense voltage} developed across the current sense resistor by {TAIL ~ the switch current flows} 
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The controller comprises a comparator and a current sense resistor for comparing a reference voltage with { HEAD ~ a current sense voltage } developed across the current sense resistor by { TAIL ~ the switch current flows }
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 OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL