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L4981X Datasheet(PDF) 9 Page - STMicroelectronics

Part # L4981X
Description  POWER FACTOR CORRECTOR
Download  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4981X Datasheet(HTML) 9 Page - STMicroelectronics

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C7
C8
R8
R7
R6
R14
74
BRIDGE
C1
L4981B
15
16
R15
19
C12
D4
D3
C5
T
13
14
C9
R12
3
C11
R13
MOS
D5
R17
20
R11
R3
R5
C3
R4
C4
R16
C6
C10
1
R2
R10
R1
R9
D1
6
11
12
17
10
18
9
5
8
2
FUSE
Vi
C2
+
-
Vo=400V
D95IN220
85VAC-265VAC
D2
RS
R21
R22
Figure 9B: L4981B Power Factor Corrector (200W)
C1
470nF
400V
C2
100
µF
450V
C3
2.2nF
C4
1.1nF
C5
100
µF
25V
C6
1
µF
16V
C7
220nF
63V
C8
220nF
63V
C9
330nF
C10
1
µF
16V
C11
270pF
400V
C12
8.2nF
100V
D1
STTA506D
D2, D3
1N4148
D4
18V
1/2W
D5
BYT11-600
MOS
STH/STW15NA50
FUSE = 4A/250V
RS
0.07(3 x .22)
1/2W
5%
R1
820k
Ω
1/4W
1%
R2
10k
Ω
1/4W
1%
R3
1.8k
Ω
1/4W
5%
R4
1.8k
Ω
1/4W
5%
R5
18k
Ω
1/4W
5%
R6
1.2M
Ω
1/4W
5%
R7
360k
Ω
1/4W
5%
R8
33k
Ω
1/4W
5%
R9
1.8M
Ω
1/4W
1%
R10
21k
Ω
1/4W
1%
R11
402
Ω
1/4W
1%
R12
120k
Ω
1/4W
5%
R13
27
Ω
1/4W
5%
R14
1M
Ω
1/4W
1%
R15
120k
Ω
1/2W
5%
R16
24k
Ω
1/4W
5%
R17
1.8k
Ω
4W
1%
R21
5.1k
Ω
1/4W
1%
R22
1.1M
Ω
1/4W
1%
BRIDGE = 4 x P600M
PART LIST
T= primary: 88 turns of 12 x 32 AWG (0.2mm)
secondary: 9 turns of # 27AWG (0.15mm)
core: B1ET3411A THOMSON - CSF
gap: 1,6mm for a total primary inductance of
0.9mH
fSW = 80 to 92kHz PO = 200W
VOUT = 400V Irms max = 2.53A
VOVP = 442V IPK max = 6.2A
L4981A - L4981B
9/17


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