FA5534 Datasheet | Fuji Electric

Features Features - Critical mode Power Factor Correction and PWM are bined : suitable for smaller power supply - Internal start-up circuit with 500V rating and low frequency operation achieves 340m W input at no load when PFC stops. - Small Output Capacitance : Linearly reduced frequency for light load makes small ripple voltage. - PFC stops below half load ( only for FA5533 ) - Vcc rating 28V allows no series regulator for PW M_ FB .. Block Diagram Diagram Block MUL underdevelopment development under PFC_ IS LIGHT_ LOAD PFC_ FB + R TIMER R 1shot Overvoltage detection OVP LV + - R RESTART UVLO PFC_ REG_ OK LIGHT_ LOAD UVLO_ AC PFC_ OUT PFC section UVLO_ AC + UVLO_ AC LIGHT_ LOAD UVLO_...