FAN7530 DIP8

The FAN7530 is an active power factor correction (PFC)controller for the boost PFC applications that operates incritical conduction mode (CRM). It uses the voltagemode PWM that compares an internal ramp signal withthe error amplifier output to generate MOSFET turn-offsignal. Because the voltage mode CRM PFC controllerdoes not need the rectified AC line voltage information, itcan save the power loss of the input voltage sensing net-work necessary for the current mode CRM PFC control-ler.