The intermediate voltage across the capacitor is {HEAD ~ feedback} to {TAIL ~ the controller} which in turn changes the PWM signal to regulate the intermediate voltage 
to
The intermediate voltage across the capacitor is { HEAD ~ feedback } to { TAIL ~ the controller } which in turn changes the PWM signal to regulate the intermediate voltage
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH