FAN7930 Datasheet PDF - Fairchild Semiconductor
| Part Number | FAN7930 | |
| Description | Critical Conduction Mode PFC Controller | |
| Manufacturers | Fairchild Semiconductor | |
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April 2010
FAN7930
Critical Conduction Mode PFC Controller
Features
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
Applications
Adapter
Ballast
LCD TV, CRT TV
SMPS
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 provides over-voltage protection, open-
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 — Design Consideration for Boundary
Conduction Mode PFC Using FAN7930
Ordering Information
Part Number
Operating
Temperature
Range
FAN7930M
FAN7930MX
-40 to +125°C
Top Mark
Package
FAN7930 8-Lead Small Outline Package (SOP)
Packing
Method
Rail
Tape & Reel
© 2010 Fairchild Semiconductor Corporation
FAN7930 • Rev. 1.0.1
www.fairchildsemi.com
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Electrical Characteristics
VCC = 14V, TA = -40°C~+125°C, unless otherwise specified.
Symbol
Parameter
Conditions
VCC Section
VSTART Start Threshold Voltage
VSTOP Stop Threshold Voltage
HYUVLO UVLO Hysteresis
VZ Zener Voltage
VOP Recommended Operating Range
Supply Current Section
VCC Increasing
VCC Decreasing
ICC=20mA
ISTART
Startup Supply Current
IOP Operating Supply Current
IDOP Dynamic Operating Supply Current
IOPDIS
Operating Current at Disable
Error Amplifier Section
VCC=VSTART-0.2V
Output Not Switching
50kHZ, CI=1nF
VINV=0V
VREF1
ΔVREF1
ΔVREF2
IEA,BS
Voltage Feedback Input Threshold1 TA=25°C
Line Regulation
Temperature Stability of VREF1(4)
VCC=14V~20V
Input Bias Current
VINV=1V~4V
IEAS,SR Output Source Current
VINV=VREF -0.1V
IEAS,SK Output Sink Current
VINV=VREF +0.1V
VEAH
Output Upper Clamp Voltage
VINV=1V, VCS=0V
VEAZ
gm
Zero Duty Cycle Output Voltage
Transconductance(4)
Maximum On-Time Section
tON,MAX1 Maximum On-Time Programming 1 TA=25°C, VZCD=1V
tON,MAX2
Maximum On-Time Programming 2
TA=25°C,
IZCD=0.469mA
Current-Sense Section
VCS
Current Sense Input Threshold
Voltage Limit
ICS,BS
tCS,D
Input Bias Current
Current Sense Delay to Output(4)
VCS=0V~1V
dV/dt=1V/100ns, from
0V to 5V
Min.
11
7.5
3.0
20
13
90
2.465
-0.5
6.0
0.9
90
35.5
11.2
0.7
-1.0
www.Dat
Typ. Max. Units
12 13 V
8.5 9.5 V
3.5 4.0 V
22 24 V
20 V
120 190 µA
1.5 3.0 mA
2.5 4.0 mA
160 230 µA
2.500
0.1
20
-12
12
6.5
1.0
115
2.535
10.0
0.5
7.0
1.1
140
V
mV
mV
µA
µA
µA
V
V
µmho
41.5 47.5 µs
13.0 14.8 µs
0.8 0.9 V
-0.1 1.0 µA
350 500 ns
Continued on the following page…
© 2010 Fairchild Semiconductor Corporation
FAN7930 • Rev. 1.0.1
5
www.fairchildsemi.com
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for FAN7930 electronic component. |
| Information | Total 22 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ FAN7930.PDF Datasheet ] | |
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