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Quasi-Resonant IC. FA5531 Datasheet

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Quasi-Resonant IC. FA5531 Datasheet






FA5531 IC. Datasheet pdf. Equivalent




FA5531 IC. Datasheet pdf. Equivalent





Part

FA5531

Description

(FA5530 - FA5532) Quasi-Resonant IC



Feature


Quasi-Resonant IC FA5530/31/32 Features Features • Internal start-up circuit with 500V rating and low frequency oper ation achieves 140mW input at no load. • Small Output Capacitance : Linearly reduced frequency for lighter load cau ses small ripple voltage. •Suitable f or Low Noise and High Efficiency about 90% •Line-up of 3 types for maximum f requency and OLP 5530: 65k.
Manufacture

FE

Datasheet
Download FA5531 Datasheet


FE FA5531

FA5531; Hz max.,16Vmax.-VCC,Auto-restart OLP 553 1:130kHz max.,28Vmax.-VCC,Auto-restart OLP 5532:130kHz max.,28Vmax.-VCC,Timer- Latched OLP •High ability of driving Power MOSFET ( High / Low side : 17 ohm / 3.5 ohm ) : available to 200W output •Vcc rating 28V allows no series reg ulator for auxiliary winding to clamp V cc voltage for FA5531/32. •1ms Fixed Soft Start time •Timer L.


FE FA5531

atched Over-Voltage Protection of 16V/28 V Vcc •8 pins package ( DIP/SO ) Usag e : Notebook PC, LCD Monitor, LCD-TV et c. 3.3V 0.4V Overload Timer 190ms 1510m s 5V 50uA FA5531Block BlockDiagram Dia gram FA5531 ZCD Valley detection 1 sh ot (380ns) Start up management Logic VH Start up Current Time out (5µs) R eset CLR VCC www.DataSheet4U.com Max . fsw Blanking Variab.


FE FA5531

le max.130kHz UVLO 5V Reg. Check 5V Re g. 9.85V/9.1V IS 5V Internal supply 20kΩ Current comparator FB 125k 125k Driver S R Q OUT 1V Disable ZCD Soft start (1ms) 8V OVP 2 VCC OVP 1 Timer latch (48µs) Reset 28V GND Q uasi-Resonant IC FA5530/31/32 Applicati onCircuit Circuit Application 80 to 264 Vac 0.22μF 1M 1M 250V/ 3A FG E RA15-01 2SK3687 Cd 220pF 470.

Part

FA5531

Description

(FA5530 - FA5532) Quasi-Resonant IC



Feature


Quasi-Resonant IC FA5530/31/32 Features Features • Internal start-up circuit with 500V rating and low frequency oper ation achieves 140mW input at no load. • Small Output Capacitance : Linearly reduced frequency for lighter load cau ses small ripple voltage. •Suitable f or Low Noise and High Efficiency about 90% •Line-up of 3 types for maximum f requency and OLP 5530: 65k.
Manufacture

FE

Datasheet
Download FA5531 Datasheet




 FA5531
Quasi-Resonant IC FA5530/31/32
FFeeaattuurreess
FFAA55553311BBlloocckkDDiiaaggrraamm
• Internal start-up circuit with 500V rating and low
frequency operation achieves 140mW input at no load.
Small Output Capacitance : Linearly reduced
ZCD
frequency for lighter load causes small ripple voltage.
•Suitable for Low Noise and High Efficiency about 90%
•Line-up of 3 types for maximum frequency and OLP
5530: 65kHz max.,16Vmax.-VCC,Auto-restart OLP
5531:130kHz max.,28Vmax.-VCC,Auto-restart OLP
IS
5532:130kHz max.,28Vmax.-VCC,Timer-Latched OLP
•High ability of driving Power MOSFET ( High / Low FB
side : 17 ohm / 3.5 ohm ) : available to 200W output
•Vcc rating 28V allows no series regulator for
auxiliary winding to clamp Vcc voltage for FA5531/32.
•1ms Fixed Soft Start time
•Timer Latched Over-Voltage Protection of 16V/28V Vcc
•8 pins package ( DIP/SO )
Usage : Notebook PC, LCD Monitor, LCD-TV etc.
Valley
detection
Time out
(5µs)
5V Reset
50uA
Max. fsw
Blanking
Variable
max.130kHz
5V
1 shot
(380ns)
CLR
Start up
management
Logic
Start up
Current
VH
VCC
5V Reg.
Check
5V Reg.
UVLO
Internal
supply
9.85V/9.1V
20kΩ
125k
Current
comparator
SQ
R
Driver
OUT
125k 1V
Disable
Soft start
(1ms)
0.4V
Overload
3.3V
Timer
190ms
1510ms
Reset
ZCD
OVP 2
8V
VCC
OVP 1
28V
Timer
latch
(48µs)
GND




 FA5531
Quasi-Resonant IC FA5530/31/32
AApppplliiccaattiioonnCCiirrccuuiitt
Bead 4700pF
80 to
264Vac
0.22μF 470pF 7mH
1M
1M
250V/3A 470pF
FG
100 ohm
1000pF
~+
~ー
D3SBA60
E RA15-01
7.5k
2200pF
T1
220μF
400V
56k
E R A38-06
2200pF
YG865C15R * 2
19V /0 to 5A
3300μF * 3
35V
( 9900μF )
4.7μH
1000μF
35V
10 ohm
2SK3687
4.7k
Cd
220pF
Lp = 3 6 0 μH
Np:Ns:Nsub=57:10:12
0.22 ohm
0.022μF
2k
200k
0.1μF GND
10k
2200pF
18k
100k
S C 9 0 2 -2
18
27
36
45
FA5531
33μF
50V
4.7 ohm E R A22-02
N a tio n a l
S e m icon d u ctor
LMV431
10k 0.01μF
15k




 FA5531
Quasi-Resonant IC FA5530/31/32
Low dV/dt slope of Drain Voltage “Vds”
Valley
SSwwititcchhininggFFrreeqquueennccyyvvss. .OOuuttppuuttPPoowweerr
TTimimininggCChhaarrtt((FFAA55553311/3/322))
Valley
VVddss
fsw Maximum Frequency :
65kHzMoar x13f0skwHz
(130kHz)
Maximum
Frequenfcsyw
113/1030kkHHzz
113/103k0kHHzz
Example:
1kH(z1 k H z )
Output PowerPPoo
Low frequency switching such as 1kHz
VaVlalellyey
Signal
OUTOUpiTn
voltage
at light load reduces standby power.
Maximum frequency limits EMI noise and switching Loss.
Heavy
Load
Middle
Load
Maximfusmw Period
is (1/ (Mi1nkimHuzm)
Frequency).
Example :1kHz
Light
Load
Switching at Valley of Vds : Turn-ON Loss and Noise are very small.
Low dV/dt of Vds at Turn-OFF by a capacitor connected between Drain and Source
of Power MOSFET : Turn-OFF Loss and Noise are also very small.



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