100W, 12V AC to DC Single Output Power Supply for UPS Power Supply

FAN4800 Combo Controller (Voltage Mode) Applications. The PFC section provides 380VDC to a dual-transistor current-mode forward Converter. The output of the converter delivers +12V at up to 8.4 amps. The circuit operates from 85 to 265VAC with both power sections switching at 100kHz