A Boost Strap circuit lifts the gate of {HEAD ~ coil switch circuit} above the battery voltage level and turns on {TAIL ~ the coil switch} 
A Boost Strap circuit lifts the gate of { HEAD ~ coil switch circuit } above the battery voltage level and turns on { TAIL ~ the coil switch }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL