The PLC810PG is a combined PFC and LLC off-line controller with integrated high voltage half bridge drivers. Figure 1 shows a simplifi ed schematic of a PLC810PG based power supply where the LLC resonant inductor is integrated into the transformer. The PFC section of the PLC810PG is a universal input continuous current mode (CCM) design that does not require a sinusoidal input reference, thereby reducing system cost and external components.