FA5550 Fuji Electric holdings CO.,Ltd, FA5550 Datasheet - Page 5

• Manufacturer Part Number: FA5550
• Description: Power Factor Correction Converter
• Manufacturer: Fuji Electric holdings CO.,Ltd

4. Block diagram
5. Pin assignment
Rev.1 Feb-2008
COMP
Pin No.
GND
FB
1
2
3
4
5
6
7
8
VCC
FB
８
１
1
2
6
Symbol
SLOPE
COMP
GND
MUL
OUT
VCC
FB
COMP
IS
OUT
FA5550P/N
７
２
ERRAMP
+
-
+
-
+
-
+
-
Voltage feed-back input
Error amplifier compensation pin
Multiplier input
Current sense input
SLOPE compensation pin
Ground
Output
Power supply
VOVP(1.09VREF)
VSP(0.3V)
GND
VOS(2.0V)
VREF(2.5V)
MUL
６
３
OVP
SP
Function of pin
SLOPE
IS
SLOPE
4
５
４
IS
AOC
MUL
MUL
3
SLOPE
5
OSC
FA5550 / 51
VZCD(1.5V/1.33V)
VOVP(1.09VREF)
VREF(2.5V)
VDD(5.0V)
(1.237V/1.113V)
5
VOS(2.0V)
+
-
VBO
Input pin from converter output voltage
Output pin for error amplifier
Input pin for sine-wave AC power supply waveform
Input pin for current detection of MOSFET
Pin for regulation of SLOPE compensation
Pin for power supply grounding
Output pin for direct drive of MOSFET
Pin for power supply input to operate IC
REF
R
S
Q
Functional description
Fuji Electric Device Technology
VCC
UVLO
8
SP
OVP
7
OUT