20
LatticeSC PCI Express x1
Lattice Semiconductor
Evaluation Board User’s Guide
Figure 7. DC/DC Conversion
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
2_5_TRIM
CORE_TRI
M
1_2_TRIM
3_3_TRIM
12_0V
2_5V
3_3V
12_0V
VCC_CORE
1_5V
2_5V
12_0V
1_2V
1_8V
12_0V
12_0V
VCC_CORE
3_3VIN
12_0V
1_8V
1_5V
1_2V
3_3VIN
3_3VIN
12_0V
12_0V
12_0V
12_0V
3_3VIN
3_3V
12_0V
12_0V
1_2VDDA
PROBE_VCC
[3]
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SC PCI EXPRESS Card
1.0
DC/DC Conversion
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SC PCI EXPRESS Card
1.0
DC/DC Conversion
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SC PCI EXPRESS Card
1.0
DC/DC Conversion
C
41
4
GND Pads
Distributed around the board
2.5V
POWER RAIL GOOD INDICATORS
VCC
CORE
V
5.
2
V
8.
1
3.3V
1.2V
1.5V
SC
VCC_CORE
1.8V
1.5V
1.2V
12V
INPUT
GOOD
+12VDC
GND
3.3V
4.32K Typical
SET VALUE
1V= 36.5K
1.2V=17.4K
POWER INPUT
VCC12 power supply must always be higher than VCC Core, or if lower, then well within 150mV of VCC Core
C137
22UF-16V_TANTBSMT
C137
22UF-16V_TANTBSMT
R50
470R-1206SMT
R50
470R-1206SMT
TP2
TESTPOINT
TP2
TESTPOINT
1
C128
100NF-0603SMT
C128
100NF-0603SMT
R81
OPEN-0805SMT
R81
OPEN-0805SMT
R79
0R-0603SMT
R79
0R-0603SMT
FB1
BLM41PG600SN1
FB1
BLM41PG600SN1
R83
124R-0603SMT
R83
124R-0603SMT
R55
150R-0603SMT
R55
150R-0603SMT
R54
100R-0603SMT
R54
100R-0603SMT
G
D6
LED-SMT1206_GREEN
G
D6
LED-SMT1206_GREEN
TP12
TESTPOINT
TP12
TESTPOINT
1
R75
15_4K-0603SMT
R75
15_4K-0603SMT
TP3
TESTPOINT
TP3
TESTPOINT
1
R66
OPEN-0603SMT
R66
OPEN-0603SMT
R65
124R-0603SMT
R65
124R-0603SMT
TB1
Terminal Block/ED1202DS
TB1
Terminal Block/ED1202DS
1
2
U13
PTH12060W
U13
PTH12060W
GND
1
VIN
2
INHIBIT#
3
ADJUST
4
SENSE
5
VOUT
6
GND
7
TRACK
8
MDWN
9
MUP
10
R67
OPEN-0805SMT
R67
OPEN-0805SMT
C135
10UF-16V_TANTBSMT
C135
10UF-16V_TANTBSMT
TP7
TESTPOINT
TP7
TESTPOINT
1
F3
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
F3
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
C136
100NF-0603SMT
C136
100NF-0603SMT
R85
68K-0603SMT
R85
68K-0603SMT
R76
100K-0603SMT
R76
100K-0603SMT
TP11
TESTPOINT
TP11
TESTPOINT
1
C138
100NF-0603SMT
C138
100NF-0603SMT
C122
10UF-16V_TANTBSMT
C122
10UF-16V_TANTBSMT
C130
1UF-16V-0805S
MT
C130
1UF-16V-0805S
MT
U14
PTH12060W
U14
PTH12060W
GND
1
VIN
2
INHIBIT#
3
ADJUST
4
SENSE
5
VOUT
6
GND
7
TRACK
8
MDWN
9
MUP
10
R86
56R-0603SMT
R86
56R-0603SMT
C133
10UF-16V_TANTBSMT
C133
10UF-16V_TANTBSMT
+
C134
330UF-FKSMT
+
C134
330UF-FKSMT
TP10
TESTPOINT
TP10
TESTPOINT
1
R62
0R-0805SMT
R62
0R-0805SMT
U16
AMS1503CT
U16
AMS1503CT
VPOWER
5
VCONTROL
4
OUTPUT
3
ADJUST_GND
2
SENSE
1
C127
22UF-16V_TANTBSMT
C127
22UF-16V_TANTBSMT
R60
100K-0603SMT
R60
100K-0603SMT
C131
10UF-16V_TANTBSMT
C131
10UF-16V_TANTBSMT
J8
JUMPER1
J8
JUMPER1
1
2
+
C118
470UF-FKSMT
+
C118
470UF-FKSMT
R63
0R-0603SMT
R63
0R-0603SMT
R87
BOURNS-3224W-10K
R87
BOURNS-3224W-10K
C125
10UF-16V_TANTBSMT
C125
10UF-16V_TANTBSMT
F4
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
F4
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
+
C124
330UF-FKSMT
+
C124
330UF-FKSMT
R78
0R-0603SMT
R78
0R-0603SMT
R72
24K-0603SMT
R72
24K-0603SMT
TP8
TESTPOINT
TP8
TESTPOINT
1
F2
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
F2
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
+
C119
100UF-FKSMT
+
C119
100UF-FKSMT
F1
F1251CT-ND
10A Fast-Blo SMT Socketed Fuse
F1
F1251CT-ND
10A Fast-Blo SMT Socketed Fuse
G
D8
LED-SMT1206_GREEN
G
D8
LED-SMT1206_GREEN
+
C132
330UF-FKSMT
+
C132
330UF-FKSMT
Q5
2N2222/SOT23
Q5
2N2222/SOT23
3
1
2
R68
OPEN-0805SMT
R68
OPEN-0805SMT
R51
470R-1206SMT
R51
470R-1206SMT
J6
22HP037-2.1mm PC
Male Power Jack 2.1mm
J6
22HP037-2.1mm PC
Male Power Jack 2.1mm
1
3
2
R56
10K-0603SMT
R56
10K-0603SMT
R73
BOURNS-3224W-2K
R73
BOURNS-3224W-2K
G
D9
LED-SMT1206_GREEN
G
D9
LED-SMT1206_GREEN
U12
AMS1503CT
U12
AMS1503CT
VPOWER
5
VCONTROL
4
OUTPUT
3
ADJUST_GND
2
SENSE
1
R61
100K-0603SMT
R61
100K-0603SMT
R49
470R-1206SMT
R49
470R-1206SMT
R74
1_8K-0603SMT
R74
1_8K-0603SMT
R57
10K-0603SMT
R57
10K-0603SMT
R82
OPEN-0805SMT
R82
OPEN-0805SMT
Q4
2N2222/SOT23
Q4
2N2222/SOT23
3
1
2
R70
BOURNS-3224W-10K
R70
BOURNS-3224W-10K
TP9
TESTPOINT
TP9
TESTPOINT
1
TP5
TESTPOINT
TP5
TESTPOINT
1
G
D10
LED-SMT1206_GREEN
G
D10
LED-SMT1206_GREEN
+
C120
330UF-FKSMT
+
C120
330UF-FKSMT
G
D7
LED-SMT1206_GREEN
G
D7
LED-SMT1206_GREEN
R89
BOURNS-3224W-5K
R89
BOURNS-3224W-5K
R69
27R-0603SMT
R69
27R-0603SMT
+
C129
22UF-16V_TANTBSMT
+
C129
22UF-16V_TANTBSMT
Q2
2N2222/SOT23
Q2
2N2222/SOT23
3
1
2
R84
BOURNS-3224W-10K
R84
BOURNS-3224W-10K
C123
10UF-16V_TANTBSMT
C123
10UF-16V_TANTBSMT
F6
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
F6
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
TP1
TESTPOINT
TP1
TESTPOINT
1
C126
100NF-0603SMT
C126
100NF-0603SMT
TP6
TESTPOINT
TP6
TESTPOINT
1
G
D11
LED-SMT1206_GREEN
G
D11
LED-SMT1206_GREEN
R77
100K-0603SMT
R77
100K-0603SMT
TP4
TESTPOINT
TP4
TESTPOINT
1
R59
10K-0603SMT
R59
10K-0603SMT
R88
2_2K-0603SMT
R88
2_2K-0603SMT
G
D12
LED-SMT1206_GREEN
G
D12
LED-SMT1206_GREEN
R71
BOURNS-3224W-10K
R71
BOURNS-3224W-10K
R52
470R-1206SMT
R52
470R-1206SMT
C121
10UF-16V_TANTBSMT
C121
10UF-16V_TANTBSMT
R58
10K-0603SMT
R58
10K-0603SMT
R80
0R-0805SMT
R80
0R-0805SMT
R53
470R-1206SMT
R53
470R-1206SMT
U15
PTH12060W
U15
PTH12060W
GND
1
VIN
2
INHIBIT#
3
ADJUST
4
SENSE
5
VOUT
6
GND
7
TRACK
8
MDWN
9
MUP
10
J7
HEADER 3x1
J7
HEADER 3x1
1V
1
ADJ
2
1.2V
3
Q3
2N2222/SOT23
Q3
2N2222/SOT23
3
1
2
F5
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
F5
F1228CT-ND
5A Fast-Blo SMT Socketed Fuse
R64
0R-0603SMT
R64
0R-0603SMT
U11
PTH03010W
U11
PTH03010W
GND
1
VIN
2
INHIBIT#
3
ADJUST
4
SENSE
5
VOUT
6
GND
7
TRACK
8
MDWN
9
MUP
10