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