FAN7930 Fairchild Semiconductor, FAN7930 Datasheet

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FAN7930

Manufacturer Part Number
FAN7930
Description
Critical Conduction Mode PFC Controller
Manufacturer
Fairchild Semiconductor
Datasheet

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© 2010 Fairchild Semiconductor Corporation
FAN7930 • Rev. 1.0.1
FAN7930
Critical Conduction Mode PFC Controller
Features
Applications
Ordering Information
Part Number
FAN7930MX
FAN7930M
PFC Ready Signal
Input Voltage Absent Detection Circuit
Maximum Switching Frequency Limitation
Internal Soft-Start and Startup without Overshoot
Internal Total Harmonic Distortion (THD) Optimizer
Precise Adjustable Output Over-Voltage Protection
Open-Feedback Protection and Disable Function
Zero Current Detector
150μs Internal Startup Timer
MOSFET Over-Current Protection
Under-Voltage Lockout with 3.5V Hysteresis
Low Startup and Operating Current
Totem-Pole Output with High State Clamp
+500/-800mA Peak Gate Drive Current
8-Pin SOP
Adapter
Ballast
LCD TV, CRT TV
SMPS
Temperature
-40 to +125°C
Operating
Range
Top Mark
FAN7930
8-Lead Small Outline Package (SOP)
Description
The FAN7930 is an active power factor correction (PFC)
controller for boost PFC applications that operate in
critical conduction mode (CRM). It uses a voltage-mode
PWM that compares an internal ramp signal with the
error amplifier output to generate a MOSFET turn-off
signal. Because the voltage-mode CRM PFC controller
does not need rectified AC line voltage information, it
saves the power loss of an input voltage sensing network
necessary for a current-mode CRM PFC controller.
FAN7930
feedback protection, over-current protection, input-
voltage-absent detection, and under-voltage lockout
protection. The PFC-ready pin can be used to trigger
other power stages when PFC output voltage reaches
the proper level with hysteresis. The FAN7930 can be
disabled if the INV pin voltage is lower than 0.45V and
the operating current decreases to a very low level.
Using a new variable on-time control method, THD is
lower than the conventional CRM boost PFC ICs.
Related Resources
AN-8035
Conduction Mode PFC Using FAN7930
Package
provides
Design
over-voltage
Consideration
protection,
www.DataSheet4U.com
Tape & Reel
for
April 2010
Packing
www.fairchildsemi.com
Method
Rail
Boundary
open-

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