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8/13/2019 12V Power Supply From Universal Mains
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Copyright © 2013, Texas Instruments Incorporated 1 ti.com/webench
WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
WEBENCH ® Design Report
Design : 1180682/40 LM5023MM-2/NOPBLM5023MM-2/NOPB 90.0V-250.0V to 11.862745098039216V @ 2.0A
VinMin = 90.0VVinMax = 250.0VVout = 12.0VIout = 2.0A
Device = LM5023MM-2/NOPBTopology = FlybackCreated = 11/7/13 4:12:11 PMBOM Cost = $0.00Total Pd = 4.59WFootprint = 2,929.0mm2BOM Count = 38
Ccomp1.0 nF384.0 mOhm
Ccs100.0 pF
Cd68.0 pF94.0 mOhm
Cfb12.0 nF
Cgnd2.2 nF120.0 mOhm
C n4.7 µF15.0 mOhmQ y = 3
Cout82.0 µF27.0 mOhmQ y = 3
Cs4.7 nF
Css12.0 nF
Cvcc4.7 µF
Cvcc1100.0 nF64.0 mOhm
Cvcc222.0 µF
D1VF@o= 1.3 VVRRM= 40 0.0 V
D2VF@o= 770.0 mVVRRM= 100.0 V
D3VF@o= 850.0 mVVRRM= 20 0.0 V
~
~
- +
DacVF@o= 1.1 VVRRM= 1 00 0 V
Dz4
M1VdsMax= 800.0 VIdsMax= 2.5 Amps
M2VdsMax= 600.0 VIdsMax= 3.9 Amps
O1
Rcs4.53 kOhm63.0 mW
R bb10.2 kOhm63.0 mW
R bt86.6 kOhm63.0 mWopto
649.0 kOhm250.0 mW
Rqrb7.68 kOhm63.0 mW
Rqrt25.5 kOhm125.0 mW
Rs12.1 kOhm250.0 mW
Rsense430.0 mOhm500.0 mW
Rvcc100.0 Ohm125.0 mWRvin
10.0 kOhm63.0 mW
Rvsd2.0 MOhm0.0 W
T1
Lp= 1.263 mHRp= 6.211 OhmLeakage_L= 25.255 µHNs1toNp= 0.086Rs1= 10.727 mOhmsNs2toNp= 0.072Rs2= 9.045 kOhms
LM5023
QR
VSD
SS
COMP
CS
GND
OUT
VCC
U1
SHUNT_VREF
Cathode
Ref
AnodeR
V n Iout
1. Rbld is a starting point, but may need to be experimented with in order to get minimum current needed to hold Vout at no load. Rlc and thefeedback resistors may also need adjustment based on the actual transformer used. For more information please click the design assistancebutton.
Electrical BOM# Name Manufacturer Part Number Properties Qty Price Footprint
1. Ccomp Kemet C0805C102K5RACTUSeries= X7R
Cap= 1.0 nFESR= 384.0 mOhmVDC= 50.0 VIRMS= 214.0 mA
1 $0.010805 7mm2
2. Ccs MuRata GRM033R71C101KA01DSeries= X7R
Cap= 100.0 pFVDC= 16.0 VIRMS= 0.0 A
1 $0.010201 2mm2
3. Cd Kemet C0805C680J5GACTUSeries= C0G/NP0
Cap= 68.0 pFESR= 94.0 mOhmVDC= 50.0 VIRMS= 603.0 mA
1 $0.010805 7mm2
4. Cfb MuRata GRM155R71E123KA61DSeries= X7R
Cap= 12.0 nFVDC= 25.0 VIRMS= 0.0 A
1 $0.010402 3mm2
5. Cgnd TDK C4532X7R3D222KSeries= X7R
Cap= 2.2 nFESR= 120.0 mOhmVDC= 2.0 kVIRMS= 0.0 A
1 $0.21
1812 27mm2
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WEBENCH ® Design
Copyright © 2013, Texas Instruments Incorporated 2 ti.com/webench
WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
# Name Manufacturer Part Number Properties Qty Price Footprint
6. Cin EPCOS Inc B32924C3475MSeries= 303
Cap= 4.7 µFESR= 15.0 mOhmVDC= 630.0 VIRMS= 457.0 mA
3 $1.83
B32924_33mm 670mm2
7. Cout Sanyo 16SVPF82MSeries= 1273
Cap= 82.0 µFESR= 27.0 mOhmVDC= 16.0 VIRMS= 3.0 A
3 $0.35
CAPSMT_62_E61 53mm2
8. Cs MuRata GRM155R72A472KA01DSeries= X7R
Cap= 4.7 nFVDC= 100.0 VIRMS= 0.0 A
1 $0.010402 3mm2
9. Css MuRata GRM155R71E123KA61DSeries= X7R
Cap= 12.0 nFVDC= 25.0 VIRMS= 0.0 A
1 $0.010402 3mm2
10. Cvcc MuRata GRM21BC81E475KA12LSeries= 379
Cap= 4.7 µFVDC= 25.0 VIRMS= 0.0 A
1 $0.040805 7mm2
11. Cvcc1 Kemet C0805C104K5RACTUSeries= X7R
Cap= 100.0 nFESR= 64.0 mOhmVDC= 50.0 VIRMS= 1.64 A
1 $0.010805 7mm2
12. Cvcc2 Nippon Chemi-Con EMVA160ADA220MD55GSeries= MVA
Cap= 22.0 µFVDC= 16.0 VIRMS= 26.0 mA
1 $0.07
CAPSMT_62_D55 28mm2
13. D1 Diodes Inc. RS1G-13-F VF@Io= 1.3 VVRRM= 400.0 V
1 $0.07
SMA 37mm2
14. D2 Vishay-Semiconductor 50WQ10FNPBF VF@Io= 770.0 mVVRRM= 100.0 V
1 $0.41
DPAK 102mm2
15. D3 Diodes Inc. DFLS1200-7 VF@Io= 850.0 mVVRRM= 200.0 V
1 $0.21PowerDI123 13mm2
16. Dac Vishay-Semiconductor DF10SA VF@Io= 1.1 VVRRM= 1,000 V
1 $0.24
DF-S 99mm217. Dz4 ON Semiconductor BZX84C15LT1G Zener 1 $0.02
SOT-23 14mm2
18. M1 ST Microelectronics STD3NK80ZT4 VdsMax= 800.0 VIdsMax= 2.5 Amps
1 $0.68
DPAK 102mm2
19. M2 Fairchild Semiconductor FCD4N60TM VdsMax= 600.0 VIdsMax= 3.9 Amps
1 $0.49
DPAK 102mm2
20. O1 CUSTOM Custom Optocoupler 1 NA
CUSTOM 0mm221. Rcs Vishay-Dale CRCW04024K53FKED
Series= CRCW..e3Res= 4.53 kOhmPower= 63.0 mWTolerance= 1.0%
1 $0.010402 3mm2
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WEBENCH ® Design
Copyright © 2013, Texas Instruments Incorporated 3 ti.com/webench
WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
# Name Manufacturer Part Number Properties Qty Price Footprint
22. Rfbb Vishay-Dale CRCW040210K2FKEDSeries= CRCW..e3
Res= 10.2 kOhmPower= 63.0 mWTolerance= 1.0%
1 $0.010402 3mm2
23. Rfbt Vishay-Dale CRCW040286K6FKEDSeries= CRCW..e3
Res= 86.6 kOhmPower= 63.0 mWTolerance= 1.0%
1 $0.010402 3mm2
24. Ropto Panasonic ERJ-8ENF6493V
Series= ERJ-8E
Res= 649.0 kOhm
Power= 250.0 mWTolerance= 1.0%
1 $0.01
1206 11mm2
25. Rqrb Vishay-Dale CRCW04027K68FKEDSeries= CRCW..e3
Res= 7.68 kOhmPower= 63.0 mWTolerance= 1.0%
1 $0.010402 3mm2
26. Rqrt Vishay-Dale CRCW080525K5FKEASeries= CRCW..e3
Res= 25.5 kOhmPower= 125.0 mWTolerance= 1.0%
1 $0.010805 7mm2
27. Rs Panasonic ERJ-8ENF1212VSeries= ERJ-8E
Res= 12.1 kOhmPower= 250.0 mWTolerance= 1.0%
1 $0.011206 11mm2
28. Rsense Rohm MCR25JZHFLR430Series= 298
Res= 430.0 mOhmPower= 500.0 mW
Tolerance= 1.0%
1 $0.04
1210 15mm2
29. Rvcc Vishay-Dale CRCW0805100RFKEASeries= CRCW..e3
Res= 100.0 OhmPower= 125.0 mWTolerance= 1.0%
1 $0.010805 7mm2
30. Rvin Vishay-Dale CRCW040210K0FKEDSeries= CRCW..e3
Res= 10.0 kOhmPower= 63.0 mWTolerance= 1.0%
1 $0.010402 3mm2
31. Rvsd CUSTOM CUSTOMSeries= ?
Res= 2.0 MOhmPower= 0.0 WTolerance= 0.0%
1 NACUSTOM 0mm2
32. T1 CUSTOM CUSTOM Lp= 1.263 mHRp= 6.211 OhmLeakage_L= 25.255 µH
Ns1toNp= 0.086Rs1= 10.727 mOhmsNs2toNp= 0.072Rs2= 9.045 kOhms
1 NACUSTOM 0mm2
33. U1 Texas Instruments LM5023MM-2/NOPB Switcher 1 $0.38
S-PDSO-G8 36mm2
34. VR Texas Instruments LMV431 Voltage References 1 $0.21
R-PDSO-G3 16mm2
IC Tj
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0.75 1 1.25 1.5 1 .75 2
Iout(A)
31.401889995
31.401889996
31.401889997
31.401889998
31.401889999
31.401890000
31.401890001
31.401890002
31.401890003
31.401890004
31.401890005
I C T j ( d e g
C )
Duty Cycle
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0.75 1 1.25 1 .5 1 .75 2
Iout(A)
5
10
15
20
25
30
35
40
45
50
D u
t y C y c l e ( %
)
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WEBENCH ® Design
Copyright © 2013, Texas Instruments Incorporated 4 ti.com/webench
WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
T1 Iprim pk
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
0.15
0.20
0.25
0.30
0.35
0.400.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
T 1 I p r i m
p k ( A )
Cin IRMS
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1.75 2
Iout(A)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
C i n I R M S ( A )
Frequency_
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0.75 1 1.25 1 .5 1.75 2
Iout(A)
55,000
60,000
65,000
70,000
75,000
80,000
85,000
90,000
95,000
100,000
105,000
110,000115,000
120,000
125,000
130,000
F r e q u e n c y_
( H z )
T1 Is1 RMS
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
3.75
T 1 I s 1 R M S ( A )
Peak Rectified Vin
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0.75 1 1.25 1 .5 1.75 2
Iout(A)
12 5
15 0
17 5
20 0
22 5
25 0
27 5
30 0
32 5
35 0
P e a k R e c t i f i e d
V i n ( V )
Diode2 Pd
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
D i o d e 2
P d ( W )
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WEBENCH ® Design
Copyright © 2013, Texas Instruments Incorporated 5 ti.com/webench
WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
Efficiency
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
60.0
62.5
65.0
67.5
70.0
72.5
75.0
77.5
80.0
82.5
85.0
E f f i c i e n c y ( %
)
Vout p- p
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1.75 2
Iout(A)
0.015
0.020
0.025
0.030
0.035
0.0400.045
0.050
0.055
0.060
0.065
0.070
0.075
0.080
0.085
0.090
V o u
t p - p
( V )
T1 Iprim RMS
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1.75 2
Iout(A)
0.000
0.025
0.050
0.075
0.100
0.125
0.150
0.175
0.200
0.225
0.250
0.275
0.300
0.325
0.350
T 1 I p r i m
R M S ( A )
M2 TjOP
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1 .75 2
Iout(A)
29
30
31
32
33
34
35
36
37
38
39
40
41
M 2 T j O P ( d e g
C )
Iin rms
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1.75 2
Iout(A)
0.000
0.025
0.050
0.075
0.100
0.125
0.150
0.175
0.200
0.225
0.250
0.275
0.300
0.325
I i n r m s ( A
)
Cin Pd
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1.75 2
Iout(A)
0.0000
0.0001
0.0002
0.0003
0.0004
0.0005
0.0006
0.0007
0.0008
0.0009
0.0010
0.0011
0.0012
0.0013
C i n P d ( W )
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WEBENCH ® Design
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WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
Cout Pd
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1.75 2
Iout(A)
0.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
0.065
0.070
C o u t P d ( W )
Xformer Pd
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
X f o r m
e r P d ( W )
Pout
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
22.5
P o u
t ( W )
Min Rectified Vin
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0.75 1 1.25 1 .5 1.75 2
Iout(A)
12 5
15 0
17 5
20 0
22 5
25 0
27 5
30 0
32 5
35 0
M i n R e c t i f i e d
V i n ( V )
M2 Pd
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1 .25 1 .5 1.75 2
Iout(A)
0.075
0.100
0.125
0.150
0.175
0.200
0.225
0.250
0.275
0.300
0.325
0.350
M 2 P d ( W )
Total Pd
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
T o
t a l P d ( W )
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WEBENCH ® Design
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WEBENCH ® Design Report LM5023MM-2/NOPB : LM5023MM-2/NOPB90.0V-250.0V to 11.862745098039216V @ 2.0A November 7, 2013 16:12:38 GMT-8
Cout IRMS
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
C o u
t I R M S ( A )
Avg Bridge Diode Pd
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1.75 2
Iout(A)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
A v g
B r i d g e
D i o d e
P d ( W )
IC Pd
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0.5 0 .75 1 1.25 1.5 1 .75 2
Iout(A)
0.007009445
0.007009446
0.007009447
0.007009448
0.007009449
0.007009450
0.007009451
0.007009452
0.007009453
0.007009454
0.007009455
I C P d ( W )
Avg Rectified Vin
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0.75 1 1.25 1 .5 1.75 2
Iout(A)
12 5
15 0
17 5
20 0
22 5
25 0
27 5
30 0
32 5
35 0
A v g
R e c t i f i e d
V i n ( V )
Vin_OP_RMS
Vin= 90 .0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0.75 1 1.25 1 .5 1.75 2
Iout(A)
8090
10 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 0
V i n
_ O P
_ R M S ( V )
T1 Is1 pk
Vin= 90 . 0V Vin= 170 .0V Vin= 250 .0V
0.25 0 .5 0 .75 1 1.25 1 .5 1 .75 2
Iout(A)
1.5
2.02.53.03.54.04.55.05.56.06.57.07.58.08.59.09.5
10.0
T 1 I s 1 p
k ( A )
Operating Values# Name Value Category Description1. Cin IRMS 325.771 mA Current Input capacitor RMS ripple current2. Cout IRMS 1.202 A Current Output capacitor RMS ripple current3. Iin rms 113.27 mA Current RMS Input Current4. T1 Iprim RMS 245.53 mA Current Transformer Primary RMS Current5. T1 Iprim pk 541.832 mA Current Transformer Primary Peak Current6. T1 Is1 RMS 3.091 A Current Transformer Secondary1 RMS Current
7. T1 Is1 pk 6.283 A Current Transformer Secondary1 Peak Current8. Avg Rectified Vin 353.35 V General Average Rectified Voltage for the AC Line Period9. BOM Count 38 General Total Design BOM count
10. FootPrint 2.929 kmm2 General Total Foot Print Area of BOM components11. Pout 23.725 W General Total output power
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WEBENCH ® Design
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WEBENCH ® D i R LM5023MM 2/NOPB LM5023MM 2/NOPB
# Name Value Category Description12. Total BOM $0.0 General Total BOM Cost13. Vout OP 11.863 V Op_Point Operational Output Voltage14. Duty Cycle 69.894 % Op_point Duty cycle15. Efficiency 83.781 % Op_point Steady state efficiency16. Frequency 130.0 kHz Op_point Switching frequency17. IC Tj 32.962 degC Op_point IC junction temperature18. ICThetaJA 200.0 degC/W Op_point IC junction-to-ambient thermal resistance19. IOUT_OP 2.0 A Op_point Iout operating point20. M2 TjOP 34.951 degC Op_point M2 MOSFET junction temperature
21. Min Rectified Vin 353.15 V Op_point Minimum voltage seen at rectified input22. Peak Rectified Vin 353.55 V Op_point Peak voltage seen at rectified input23. Vin_OP_RMS 250.0 V Op_point AC Input RMS Voltage24. Vout p-p 56.548 mV Op_point Peak-to-peak output ripple voltage25. Avg Bridge Diode Pd 367.163 mW Power Average Power Dissipation in the Bridge Diode over the AC Line Period26. Cin Pd 530.633 µW Power Input capacitor power dissipation27. Cout Pd 13.003 mW Power Output capacitor power dissipation28. Diode2 Pd 2.38 W Power Diode2 power dissipation29. IC Pd 14.809 mW Power IC power dissipation30. M2 Pd 377.702 mW Power M2 MOSFET total power dissipation31. Total Pd 4.593 W Power Total Power Dissipation32. Xformer Pd 823.135 mW Power Transformer power dissipation
Design Inputs# Name Value Description1. Iout 2.0 A Maximum Output Current2. Iout1 2.0 Amps Output Current #13. VinMax 250.0 V Maximum input voltage4. VinMin 90.0 V Minimum input voltage5. Vout 12.0 V Output Voltage6. Vout1 12.0 Volt Output Voltage #17. base_pn LM5023 Base Product Number8. source DC Input Source Type9. Ta 30.0 degC Ambient temperature
Design Assistance1. Application Hints Rbld The European Standard for offline power supplies reuires that power supplies with an output power greater than 70Wneed to have a PFC front end. There may be application#s where a PFC front end is not required, so please make a choice based on whateverworks for you Rlc provides the function of feed-forward line compensation to eliminate change in IPP due to change in di/dt and the propagationdelay of the internal comparator and MOSFET turn-off time. For best results the chosen value may need to be adjusted based on board, FETand transformer parasitics. Rfbt & Rfbb The feedback resistors will set the output voltage of the circuit. The values chosen may need to be finedtuned based on the final Transformer turns ratios and the voltage across the output diode at close to zero current. Please see the datasheet forfurther design guidance. http://www.ti.com/lit/ds/symlink/lm5023.pdf
2. LM5023 Product Folder : http://www.ti.com/product/lm5023 : contains the data sheet and other resources.
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