But in no-load operation, inductance current flows from the capacitor to the switch, not from the switch to capacitor, since the synchronous switch
turns on to adjust the output voltage and power loss is created over the resistance of the inductance and conduction resistance of the semi-conductor switch.
The controllers are designed with a synchronous switch
instead of a freewheeling diode, improving efficiency and reducing heat.
In addition, a fully cell synchronous switch
fabric can be produced, allowing fixed length cells or segments to be routed through the switch timed to a master cell clock.