PWM diagram

The diagram on the right side illustrates the control loop operation replotted for VCM and PCCM. At the bottom, the dynamically-replotted PWM ON/OFF scheme for the HS and LS (high/low side) switches depending on the time scale with marked PWM period, Duty cycle, and dead times. The time change of the inductance current is on the top of the scheme. In PCCM, the slope generator curve, ADC and Controller blocks present the control loop operation.