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PDF FA5534 Data sheet ( Hoja de datos )
| Número de pieza | FA5534 | |
| Descripción | (FA5533 / FA5534) PFC / PWM Combination | |
| Fabricantes | Fuji Electric | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FA5534 (archivo pdf) en la parte inferior de esta página. Total 3 Páginas | ||
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PFC / PWM Combination IC FA5533/34
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•Critical mode Power Factor Correction and PWM
are combined : suitable for smaller power supply
•Internal start-up circuit with 500V rating and low
PFC_ FB
frequency operation achieves 340mW input
at no load when PFC stops.
• Small Output Capacitance : Linearly reduced
frequency for light load makes small ripple voltage.
• PFC stops below half load ( only for FA5533 )
COMP
MUL
AC PFC_ IS ZCD
ERR
-
+
LIGHT_ LOAD
MUL
Overvoltage
detection
OVP
ZCD
1shot
+
-
LV
+
LV
-
ACD
PW M_ REG
AC detect
UVLO_ AC
+
-
UVLO_ AC
PFC_ REG_ OK
LIGHT_ LOAD
REG_ PFC
on
PW M_ REG_ OK
REG_ PW M
on
R
R
TIMER
S
Q
R
OVP
LV
RESTART
UVLO
PFC_ REG_ OK
LIGHT_ LOAD
UVLO_ AC
UVLO_ VCC
+
-
START
off
•Vcc rating 28V allows no series regulator for
auxiliary winding to clamp Vcc voltage.
•Adjustable Soft Start time
•Auto-Restart Over Load Protection
PW M_ FB
VCC
PW M OVP
+
-
VCC
VCO OSC
FOSC
Q
T
PW M_ DELAY
+
slope
-
+
+
TQ
CLR
1shot
-
-
-
+
PW M
S
Q
R
Dma
PW M
RESTART
UVLO
PW M_ REG_ OK
LV
UVLO_ AC
•Auto-Restart Over-Voltage Protection for Vcc CS
•Adjustable Start-up sequence for PFC and PWM:
easy Full Load Start-up
•Brown-Out below 70Vac and 70Vdc of PFC Output
UVLO
+
-
Overload
+
-
RESTART
RESTART
PW M_ REG
-
+ delay
LIGHT_ LOAD
PW M_ IS
Usage : Notebook PC, LCD Monitor,
LIGHT_ LOAD
•16 pins package ( DIP/SO )
LCD-TV, Laser Beam Printer etc.
PFC_ OUT
PFC section
VCC
VH
Common section
PWM section
PW M_ OUT
GND
1 page | ||
| Páginas | Total 3 Páginas | |
| PDF Descargar | [ Datasheet FA5534.PDF ] | |
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