FAN7314A Просмотр технического описания (PDF) - Fairchild Semiconductor
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FAN7314A Datasheet PDF : 3 Pages
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Typical Application Circuit (LCD Backlight Inverter)
Application
22-Inch LCD Monitor
Device
FAN7314A
Input Voltage Range
22V±5%
Number of lamps
4
1. Features
High-Efficiency Single-Stage Power Conversion
P-N Half-Bridge Topology
Reduces Required External Components
Enhanced System Reliability through Protection Functions
22.5V
ENA
BDIM
ADIM
C601
470u, 35V
C602
470u, 35V
C820
1u, 50V
R612
10k
R610
24k
1 OLP
2 OLR
3
C622
0.22u 4
ENA
S_S
5
C621
1u
6
GND
REF
RT1 20
OUTB 19
OUTA 18
VIN 17
PGND 16
OUTC 15
R619
100n
RT
R619
51k
C625
1u, 50V
S1
D1
G1
S2
R634
D2
10k G2
Q601
FDD8424H
R615
33k
R611
9.1k
C610
10n
REF
R601
270k
7 ADIM
8 BDIM
OUTD 14
C614
220p
CT 13
9 EA_IN
RT 12
10 EA_OUT
BCT 11
COP2
33n
R616
150k
COP1
1n
C651
10u, 25V
R613
30k
C616
3.9n
RT
R621
5.1k
R617
10.7k
C652
10u, 25V
FB
T602S
C624
1u
REF
Q602
KST2222A
R614
330k
D609
BAW56
D601
BAW56
C641
D604 2.2n
BAW56
C630
2.2n
C623
1n
C640
2.2n
C629
2.2n
R618
100k
R629
10k
R630
10k
R625
10k
R624
10k
OLR
OLP3
OLP4
OLP2
OLP1
CN603
OLR
D608
BAV70
R632
1k
C603
5p, 3kV
R633
1k
C604
5p, 3kV
OLP1
D606
BAV99
C642
3.9n//220p
C643
3.9n//220p
OLP2
D607
BAV99
R628
1k
R631
1k
FB
CN604
OLR
D608
BAV70
R627
1k
C605
5p, 3kV
R620
1k
C606
5p, 3kV
OLP3
D603
BAV99
C628
3.9n//220p
C627
3.9n//220p
OLP4
D605
BAV99
R626
1k
R623
1k
FB
Figure 9. Typical Application Circuit
2. Transformer Specifications
Supported by Clover Hitech (http://www.cloverhitech.com)
PART NO : EEL-22W
Pin No.
2Æ7
3Æ6
1Æ8
4Æ5
Wire
UTSC 0.1×12
1 UEW 0.04Ω
Turns
19
2300
Inductance Leakage Inductance
83.0µH
16µH
1.4H
280mH
Remarks
1kHz, 1V
© 2008 Fairchild Semiconductor Corporation
FAN7314A • 1.0.2
11
www.fairchildsemi.com
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