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PDF FAN7529 Data sheet ( Hoja de datos )
| Número de pieza | FAN7529 | |
| Descripción | Critical Conduction Mode PFC Controller | |
| Fabricantes | Fairchild Semiconductor | |
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FAN7529
Critical Conduction Mode PFC Controller
September 2006
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-6026 - Design of Power Factor Correction Circuit
Using FAN7529
Description
The FAN7529 is an active power factor correction (PFC)
controller for boost PFC applications that operates in crit-
ical 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 sig-
nal. Because the voltage-mode CRM PFC controller does
not need rectified AC line voltage information, it saves the
power loss of the input voltage sensing network neces-
sary for the current-mode CRM PFC controller.
FAN7529 provides many protection functions, such as
over-voltage protection, open-feedback protection, over-
current protection, and under-voltage lockout protection.
The FAN7529 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
FAN7529N
FAN7529M
FAN7529MX
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
FAN7529
FAN7529
FAN7529
© 2006 Fairchild Semiconductor Corporation
FAN7529 Rev. 1.0.0
www.fairchildsemi.com
1 page  
Electrical Characteristics
VCC = 14V and TA = -40°C~125°C unless otherwise specified.
Symbol
Parameter
Condition
UNDER-VOLTAGE LOCKOUT SECTION
Vth(start) Start Threshold Voltage
Vth(stop) Stop Threshold Voltage
HY(uvlo) UVLO Hysteresis
VZ Zener Voltage
SUPPLY CURRENT SECTION
VCC increasing
VCC decreasing
ICC = 20mA
Ist Start-up Supply Current
ICC Operating Supply Current
Idcc Dynamic Operating Supply Current
ICC(dis) Operating Current at Disable
ERROR AMPLIFIER SECTION
VCC = Vth(start) - 0.2V
Output no switching
50kHz, Cl=1nF
Vinv = 0V
Vref1 Voltage Feedback Input Threshold1
ΔVref1
ΔVref2
Line Regulation
Temperature Stability of Vref1(2)
Ib(ea) Input Bias Current
Isource Output Source Current
Isink Output Sink Current
Veao(H) Output Upper Clamp Voltage
Veao(Z)
gm
Zero Duty Cycle Output Voltage
Transconductance(2)
MAXIMUM ON-TIME SECTION
TA = 25°C
VCC = 14V ~ 20V
Vinv = 1V ~ 4V
Vinv = Vref1 - 0.1V
Vinv = Vref1 + 0.1V
Vinv = Vref1 - 0.1V
Vmot Maximum On-Time Voltage
Ton(max) Maximum On-Time Programming
CURRENT SENSE SECTION
Rmot = 40.5kΩ
Rmot = 40.5kΩ, TA = 25°C
VCS(limit)
Current Sense Input Threshold
Voltage Limit
Ib(cs)
td(cs)
Input Bias Current
Current Sense Delay to Output(2)
VCS = 0V ~ 1V
dV/dt = 1V/100ns,
from 0V to 5V
Note:
2. These parameters, although guaranteed by design, are not tested in production.
Min. Typ. Max. Unit
11 12 13
7.5 8.5 9.5
3.0 3.5 4.0
22
V
V
V
V
40 70 µA
1.5 3.0 mA
2.5 4.0 mA
20 65 95 µA
2.465
-0.5
5.4
0.9
90
2.500
0.1
20
-12
12
6.0
1.0
115
2.535
10.0
0.5
6.6
1.1
140
V
mV
mV
µA
µA
µA
V
V
µmho
2.784 2.900 3.016
19 24 29
V
µs
0.7 0.8 0.9
-1.0 -0.1 1.0
350 500
V
µA
ns
© 2006 Fairchild Semiconductor Corporation
FAN7529 Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
Typical Characteristics (Continued)
300
250
200
150
100
50
-60 -40 -20
0 20 40 60 80 100 120 140
Temperature [°C]
Figure 28. Restart Delay Time vs. Temp.
2.73
2.70
2.67
2.64
-60 -40 -20 0 20 40 60 80 100 120 140
Temperature [°C]
Figure 29. OVP Threshold Voltage vs. Temp.
0.21
0.18
0.15
0.12
-60 -40 -20
0 20 40 60 80 100 120 140
Temperature [°C]
Figure 30. OVP Hysteresis vs. Temp.
0.500
0.475
0.450
0.425
0.400
-60 -40 -20
0 20 40 60 80 100 120 140
Temperature [°C]
Figure 31. Enable Threshold Voltage vs. Temp.
0.150
0.125
0.100
0.075
0.050
-60 -40 -20
0 20 40 60 80 100 120 140
Temperature [°C]
Figure 32. Enable Hysteresis vs. Temp.
© 2006 Fairchild Semiconductor Corporation
FAN7529 Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet FAN7529.PDF ] | |
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