FAN7530_07 Datasheet, PDF (1/20 Pages) Fairchild Semiconductor – Critical Conduction Mode PFC Controller

FAN7530
Critical Conduction Mode PFC Controller
April 2007
Features
„ Low Total Harmonic Distortion (THD)
„ Precise Adjustable Output Over-Voltage Protection
„ Open-Feedback Protection and Disable Function
„ Zero Current Detector
„ 150µs Internal Start-up Timer
„ MOSFET Over-Current Protection
„ Under-Voltage Lockout with 3.5V Hysteresis
„ Low Start-up (40µA) and Operating Current (1.5mA)
„ Totem Pole Output with High State Clamp
„ +500/-800mA Peak Gate Drive Current
„ 8-pin DIP or 8-pin SOP
Applications
„ Adapter
„ Ballast
„ LCD TV, CRT TV
„ SMPS
Related Application Notes
„ AN-6027 - Design of Power Factor Correction Circuit
Using FAN7530
Description
The FAN7530 is an active power factor correction (PFC)
controller for the boost PFC applications that operates in
critical conduction mode (CRM). It uses the voltage
mode PWM that compares an internal ramp signal with
the error amplifier output to generate MOSFET turn-off
signal. Because the voltage mode CRM PFC controller
does not need the rectified AC line voltage information, it
can save the power loss of the input voltage sensing net-
work necessary for the current mode CRM PFC control-
ler.
FAN7530 provides many protection functions such as
over voltage protection, open-feedback protection, over-
current protection, and under-voltage lockout protection.
The FAN7530 can be disabled if the INV pin voltage is
lower than 0.45V and the operating current decreases to
65µA. Using a new variable on-time control method,
THD is lower than the conventional CRM boost PFC ICs.
Ordering Information
Part Number
FAN7530N
FAN7530M
FAN7530MX
Operating Temp.
Range
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
Pb-Free
Yes
Yes
Yes
Package
8-DIP
8-SOP
8-SOP
Packing Method
Rail
Rail
Tape & Reel
Marking
Code
FAN7530
FAN7530
FAN7530
© 2006 Fairchild Semiconductor Corporation
FAN7530 Rev. 1.0.2
www.fairchildsemi.com