Whenever the Lower FETs are Turned ON at the same time, ie there is a Generation of Boosted
Voltage across the Leakage inductance of the Primary inductance connected to H Bridge by the
Ldi/dt effect and this energy stored in the Leakage Inductance flow through the body diode of the
high Side MOSFETs (Each high side MOSFETs body diode conducts on AC half cycle) and
charge the Battery. Hence the charging current is proportional to the duty cycle of the PWM
switching on Lower Side FETs. (Details of switching follow in the section to come).