FA5331PM Fuji Electric, FA5331PM Datasheet

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FA5331PM

Manufacturer Part Number
FA5331PM
Description
Bipolar IC For Power Factor Correction
Manufacturer
Fuji Electric
Datasheet
FA5331P(M)/FA5332P(M)
FA5331P(M)/FA5332P(M)
FA5331P(M) and FA5332P(M) are control ICs for a power
factor correction system. These ICs use the average current
control system to ensure stable operation. With this system, a
power factor of 99% or better can be achieved.
FA5331P(M) is a 1st generation IC and FA5332P(M) is 2nd
generation IC which light-load characteristics are improved.
• Drive circuit for connecting a power MOS-FET(Io = 1.5A)
• Pulse-by-pulse overcurrent and overvoltage limiting function
• Output ON/OFF control function by external signals
• External synchronizing signal terminal for synchronous
• Undervoltage malfunction prevention function
• Low standby current (90 A typical) for simple start-up circuit
• 16-pin package (DIP/SOP)
• 2% accuracy reference voltage for setting DC output and
• When there is a possibility of light-load operation,
1
operation with other circuits
overvoltage protection [FA5332P(M) only]
FA5332P(M) is suitable.
Description
Features
Block diagram
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin
symbol
IFB
IIN–
VDET
OVP
VFB
VIN–
GND
OUT
VC
VCC
CS
ON/OFF
REF
SYNC
CT
IDET
Description
Current error amplifier output
Inverting input to current error amplifier
Multiplier input
Overvoltage protection input
Voltage error amplifier 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 input to current error amplifier
FA5331P
FA5332P
SOP-16
DIP-16
Dimensions, mm
2.54
16
16
1
2.54
1
0.81
0.71
0.40
16
1
0.25
0.25
0.1
10.06
19.2
19.4
1.27
9
8
1.5
1.3
0.2
0.48
0.5
For Power Factor Correction
8
8
9
9
0.1
0.1
0.7
7.62
7.6
Bipolar IC

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FA5331PM Summary of contents

Page 1

FA5331P(M)/FA5332P(M) FA5331P(M)/FA5332P(M) Description FA5331P(M) and FA5332P(M) are control ICs for a power factor correction system. These ICs use the average current control system to ensure stable operation. With this system, a power factor of 99% or better can be achieved. ...

Page 2

Absolute maximum ratings Item Symbol V V Supply voltage , Output current Input voltage , , SYNC ON/OFF VDET OVP V IDET P Total power dissipation d (Ta= Operating ...

Page 3

FA5331P(M)/FA5332P(M) Current error amplifier section Item Input threshold voltage Input bias current Open-loop voltage gain Output voltage Output source curent Reference voltage section Item Output voltage Voltage variation 1 (by supply voltage variation) Voltage variation 2 (by load change) Multiplier ...

Page 4

Overvoltage protection circuit section Item Input threshold voltage Input threshold voltage/reference voltage(V Delay time Overcurrent limiting circuit section Item Input threshold voltage Delay time Output ON/OFF circuit section Item Threshold voltage Input current at ON Undervoltage lockout circuit section Item ...

Page 5

FA5331P(M)/FA5332P(M) Description of each circuit 1. Oscillator section This section outputs sawtooth waves oscillating between 0.15 and 3.55V using the capacitor charge and discharge characteristics. Figure 1 shows how to connect the required external components to this circuit. The oscillation ...

Page 6

Current error amplifier and overcurrent limiting circuit The current error amplifier forms a current loop to change the input circuit current into sinusoidal waves. As Fig. 3 shows, the multiplier output is connected to pin 2 (IIN –) through ...

Page 7

FA5331P(M)/FA5332P(M) 6. ON/OFF control input circuit Figure 7 shows the ON/OFF control input circuit. If pin 12 is set to the high level (enable), this IC outputs pulses from the OUT pin. If pin 12 is set to the low ...

Page 8

Design advice 1. Start circuit Figure 9 shows a sample start circuit. Since the IC current while the Vcc pin voltage rises from (typ.), the power loss in resistor R additional winding is prepared in ...

Page 9

FA5331P(M)/FA5332P(M) 4. No-load operation The following condition should be meet to prevent from overvoltage and audible noise during no-load or light-load operation. For FA5331 (Fig.10) 0.85• OFST 3 (3.5•10 –0.26•R )•12 n where, = 42+0.26•R n and, ...

Page 10

Characteristic curves ( Oscillation frequency (f ) vs. OSC timing resistor resistance ( FA5331 Oscillation frequency (f ) vs. OSC ambient temperature (Ta) FA5331 Output duty cycle vs. CS terminal voltage (V FA5332 200 100 ...

Page 11

FA5331P(M)/FA5332P(M) IIN– terminal voltage vs. VDET terminal voltage Multiplier I/O FA5331 IDET terminal voltage vs. IIN– terminal voltage Normal operation FA5331 0 –0.5 –1.0 –1.5 0 0.5 1.0 IIN– terminal voltage [V] H-level output voltage (V ) vs. OH output ...

Page 12

Overcurrent limiting threshold voltage vs. ambient temperature (Ta) FA5331 OVP terminal threshold voltage vs. ambient temperature (Ta) FA5331 Supply current (I ) vs. supply voltage (V CC Normal operation FA5332 –1.08 –1.09 –1.1 –1.11 –1.12 –1.13 –40 –20 FA5332 1.67 ...

Page 13

FA5331P(M)/FA5332P(M) Application circuit Example of FA5331 application circuit Example of FA5332 application circuit Parts tolerances characteristics are not defined in the circuit design sample shown above. When designing an actual circuit for a product, you must determine parts tolerances and ...

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