Part # FAN7528 datasheet

Part Manufacturer: Fairchild Semiconductor

Fairchild Semiconductor

Part Description: FAN7528 Dual-Output, Critical Conduction Mode PFC Controller

Part Details:

FAN7528 Dual-Output, Critical February 2007 FAN7528Dual-Output, Critical Conduction Mode PFC Controller Features Description Low Total Harmonic Distortion (THD) The FAN7528 is an active power factor correction (PFC) Dual Output Voltage Control controller for boost PFC applications that operates in Precise Adjustable Output Over-Voltage Protection critical conduction mode (CRM). It uses voltage modePWM that compares an internal ramp signal with the Open-Feedback Protection and Disable Function Conduction Mode PFC Controller error amplifier output to generate MOSFET turn-off sig- Zero Current Detector nal. Because the voltage mode CRM PFC controller does 160µs Internal Start-up Timer not need the rectified AC line voltage information, it can MOSFET Over-Current Protection save the power loss of the input voltage sensing network Under-Voltage Lockout with 3.5V Hysteresis necessary for the current mode CRM PFC controller. Low Start-up (40µA) and Operating Current (1.5mA) The FAN7528 provides the dual-output voltage control Totem-Pole Output with High State Clamp function without the AC line voltage sensing for adapter ±400mA Peak Gate Drive Current applications. It changes the PFC output voltage accord-ing to the AC line voltage. 8-Pin DIP or 8-Pin SOP It provides protection functions such as over-voltage pro- Applications tection, open-feedback protection, over-current protec-tion, and under-voltage lockout protection. The FAN7528 Adapter can be disabled if the INV pin voltage is lower than 0.45V Related Application Notes and the operating current decreases to 65µA. Using anew variable on-time control method, THD is lower than AN-6012: Design of Power Factor Correction Circuit the conventional CRM boost PFC ICs. Using FAN7528 Ordering Information Operating Temp. Marking Part Number Range Pb-Free Package Packing Method Code FAN7528N -40°C to +125°C Yes 8-DIP Rail FAN7528 FAN7528M

Please click the following link to download the datasheet:

FAN7528.pdf Datasheet