|
|
Número de pieza | FAN4800ASNY | |
Descripción | PFC/PWM Controller Combination | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de FAN4800ASNY (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
No Preview Available ! January 2014
FAN4800AS/CS/01S/2S
PFC/PWM Controller Combination
Features
Pin-to-Pin Compatible with ML4800 and FAN4800
and CM6800 and CM6800A
PWM Configurable for Current Mode or
Feedforward Voltage-Mode Operation
Internally Synchronized Leading-Edge PFC and
Trailing-Edge PWM in One IC
Low Operating Current
Innovative Switching-Charge Multiplier Divider
Average-Current Mode for Input-Current Shaping
PFC Over-Voltage and Under-Voltage Protections
PFC Feedback Open-Loop Protection
Cycle-by-Cycle Current Limiting for PFC/PWM
Power-on Sequence Control and Soft-Start
Brownout Protection
Interleaved PFC/PWM Switching
Improved Efficiency at Light Load
fRTCT=4•fPFC=4•fPWM for FAN4800AS/01S
fRTCT=4•fPFC=2•fPWM for FAN4800CS/02S
Applications
Desktop PC Power Supply
Internet Server Power Supply
LCD TV, Monitor Power Supply
UPS
Battery Charger
DC Motor Power Supply
Monitor Power Supply
Telecom System Power Supply
Distributed Power
Related Resources
AN-8027 - FAN480X PFC+PWM Combination
Controller Application
© 2010 Fairchild Semiconductor Corporation
FAN4800AS/CS/01S/02S • Rev. 1.0.2
Description
The highly integrated FAN4800AS/CS/01S/02S parts
are specially designed for power supplies that consist of
boost PFC and PWM. They require very few external
components to achieve versatile protections /
compensation. They are available in 16-pin DIP and
SOP packages.
The PWM can be used in either current or voltage
mode. In voltage mode, feed-forward from the PFC
output bus can reduce the secondary output ripple.
Compared with older productions, ML4800 and
FAN4800, FAN4800AS/CS/01S/02S have lower
operation current that saves power consumption in
external devices. FAN4800AS/CS/01S/02S have
accurate 49.9% maximum duty of PWM that makes the
hold-up time longer. Brownout protection and PFC soft-
start functions available in this series are not available in
ML4800 and FAN4800.
To evaluate FAN4800AS/CS/01S/02S for replacing
existing FAN4800 and ML4800 boards, five things must
be completed before the fine-tuning procedure:
1. Change RAC resister from the old value to a higher
resister: between 6 MΩ to 8 MΩ.
2. Change RT/CT pin from the existing values to
RT=6.8kΩ and CT=1000 pF to have fPFC=64 kHz
and fPWM=64 kHz.
3. The VRMS pin needs to be 1.224 V at VIN=85 VAC
for universal input application from line input from
85 VAC to 270 VAC.
4. At full load, the average VVEA needs to be ~4.5 V
and the ripple of VVEA needs to be less than
400 mV.
5. For the Soft-Start pin, the soft-start current has
been reduced to half the FAN4800 capacitor.
There are two differences from FAN4800A/C/01/02 to
FAN4800AS/CS/01S/02S:
1. Under-voltage protection debounce time is
extended to one second.
2. PWM gate clamp voltage is raised to 19 V.
www.fairchildsemi.com
1 page Marking Information
F – Fairchild Logo
Z – Plant Code
X – 1-Digit Year Code
YY – 2-Digit Week Code
TT – 2-Digit Die-Run Code
T – Package Type (N:DIP)
P – Y: Green Package
M – Manufacture Flow Code
Figure 5. DIP Top Mark
F – Fairchild Logo
Z – Plant Code
X – 1-Digit Year Code
Y – 1-Digit Week Code
TT – 2-Digit Die-Run Code
T – Package Type (M:SOP)
P – Y: Green Package
M – Manufacture Flow Code
Figure 6. SOP Top Mark
© 2010 Fairchild Semiconductor Corporation
FAN4800AS/CS/01S/02S • Rev. 1.0.2
5
www.fairchildsemi.com
5 Page Typical Characteristics
20.0
18.0
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 8. IDD-ST vs. Temperature
28.04
28.02
28.00
27.98
27.96
27.94
27.92
27.90
27.88
27.86
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 9. VDD-OVP vs. Temperature
65.0
64.9
64.8
64.7
64.6
64.5
64.4
64.3
64.2
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 10. fOSC vs. Temperature
7.520
7.515
7.510
7.505
7.500
7.495
7.490
7.485
7.480
7.475
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 11. VVREF vs. Temperature
2.742
2.740
2.738
2.736
2.734
2.732
2.730
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 12. VPFC-OVP vs. Temperature
2.502
2.500
2.498
2.496
2.494
2.492
2.490
2.488
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 13. VREF vs. Temperature
74
73
73
72
72
71
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 14. GmV vs. Temperature
94
92
90
88
86
84
82
80
78
-40℃ -25℃ -10℃ 5℃
20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 15. GmI vs. Temperature
-1.177
-1.178
-1.179
-1.180
-1.181
-1.182
-1.183
-40 -25 -10 5 20 35 50 65 80 95 110 125
1.010
1.009
1.008
1.007
1.006
1.005
1.004
1.003
1.002
-40℃ -25℃ -10℃ 5℃ 20℃ 35℃ 50℃ 65℃ 80℃ 95℃ 110℃ 125℃
Figure 16. VPFC-ILIMIT vs. Temperature
Figure 17. VPWM-ILIMIT vs. Temperature
© 2010 Fairchild Semiconductor Corporation
FAN4800AS/CS/01S/02S • Rev. 1.0.2
11
www.fairchildsemi.com
11 Page |
Páginas | Total 19 Páginas | |
PDF Descargar | [ Datasheet FAN4800ASNY.PDF ] |
Número de pieza | Descripción | Fabricantes |
FAN4800ASNY | PFC/PWM Controller Combination | Fairchild Semiconductor |
Número de pieza | Descripción | Fabricantes |
SLA6805M | High Voltage 3 phase Motor Driver IC. |
Sanken |
SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |