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參數資料
| 型號： | FA5502 |
| 廠商： | FUJI ELECTRIC HOLDINGS CO., LTD. |
| 英文描述： | POWER SUPPLY CONTROL IC |
| 中文描述： | 電源控制IC |
| 文件頁數： | 5/23頁 |
| 文件大小： | 215K |
| 代理商： | FA5502 |
4. Block diagram
5
Quality is our message
FA5502P/M
+
-
-
+
R
S
S
Q
MUL
OCP.COMP
PWM.COMP
OVP.COMP
ER.AMP
CUR.AMP
OSC
UVLO
REF
ON/OFF
IDET(16)
IFB(1)
IIN-(2)
VDET(3)
OVP
(4)
VFB
(5)
VIN-
(6)
GND
(7)
OUT
(8)
VC
(9)
ON/OFF(12)
VCC(10)
REF(13)
CS(11)
CT(15)
SYNC
(14)
11μA
1.55V
1.64V
1.55V
11k
15k
4.85k
0.39V
5V
16.5V/8.9V
3.95V/
2.8V
5.
Pin assignment
Pin No.
Symbol
IFB
Function
Description
Output of current error amplifier to connect
compensation network
Inverting input of current error amplifier to
connect compensation network
Input of multiplier to detect sinusoidal
waveform
Input to overvoltage protection circuit
1
Current error amplifier
output
Inverting input to current
error amplifier
Multiplier input
2
IIN-
3
VDET
4
OVP
Overvoltage
input
Voltage
output
Inverting input to voltage
error amplifier
Ground
Output
Power supply to output
circuit
Power Supply
Soft-start
Output ON/OFF control
input
Reference voltage
Oscillator synchronization
input
Oscillator timing capacitor
and resistor
Non-inverting
current error amplifier
protection
5
VFB
error
amplifier
Output of voltage error amplifier to connect
compensation network
Inverting input to voltage error amplifier to
detect PFC output voltage
Ground
Output for direct driving a power MOSFET
Power supply to output circuit
6
VIN-
7
8
9
GND
OUT
VC
10
11
12
VCC
CS
ON/OFF
Power supply for IC
A pin to connect a capacitor for soft-start
Input of ON/OFF control circuit
13
14
REF
SYNC
Reference voltage output
Input of synchronization signal
15
CT
A pin to connect timing capacitor and
resistor to set oscillation frequency
Input of inductor current signal
16
IDET
input
to
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