Lattice Semiconductor LFSC80E-P4-EV, User Manual

Page: 18 / 25

18
LatticeSC PCI Express x4 Evaluation Board
Lattice Semiconductor User’s Guide
Figure 9. DC/DC Conversion
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
2_5_TR IM
CORE _TRIM
1_2_TR IM
VC
C
A
3_3_TR IM
VC
C
A
12_0V
GN
D
12_0V VC
C
A
12_0V
2_5V
3_3V
12_0V
V
CC_
CO
RE
1_5V
2_5V
12_0V
1_2V
1_8V
12_0V
12_0V
V
CC_
CO
RE
3_3VI
N
12_0V
1_8V
1_5V
1_2V
3_3VI
N
3_3VI
N
12_0V
12_0V
12_0V
12_0V
3_3VI
N
3_3V
12_0V
12_0V
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
DC/DC Co
n
v
e
rsio
n
C
41
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
DC/DC Co
n
v
e
rsio
n
C
41
1
Ti
tl
e
Siz
e
Projec
t
R
ev
D
at
e:
Sheet
of
SC8
0
X4
PCI
EXPRESS Ca
rd
3.
0
DC/DC Co
n
v
e
rsio
n
C
41
1
G
N
D P
ads
Di
s
tr
ibut
ed ar
ound t
he boar
d
2.5V
P
O
W
E
R RA
IL
GOOD I
NDI
CA
TORS
VCC CO
RE
V
5.
2
V
8.
1
3.3V
1.2V
1.5V
SC VCC_CO
RE
1.8V
1.5V
1.2V
12V IN
P
U
T
GOOD
+12VDC GND
3.3V
4.32K Typical
SET VALUE 1V= 36.5K 1.2V=17.4K
POW
E
R
IN
PU
T
VCC12 power supply must always be higher than VCC Core, or if lower, then well within 150mV of VCC Core
C6
6
100NF -0603SM T
C6
6
100NF -0603SM T
TP
6
TE
S
TP
O
INT
TP
6
TE
S
TP
O
INT
1
R4
5
470R
-1
206SM
T
R4
5
470R
-1
206SM
T
C7
4
22U
F
-16V_T
AN
T
BSM
T
C7
4
22U
F
-16V_T
AN
T
BSM
T
R4
9
100R
-0603SM
T
R4
9
100R
-0603SM
T
R5
0
150R
-0603SM
T
R5
0
150R
-0603SM
T
R7
5
124R
-0
603SM
T
R7
5
124R
-0
603SM
T
R2
0
4
100R
-0603SM
T
R2
0
4
100R
-0603SM
T
R7
2
0R
-0603SM
T
R7
2
0R
-0603SM
T
R7
7
OPEN
-0805SM
T
R7
7
OPEN
-0805SM
T
TB
1
T
e
rm
in
al
Bloc
k
/ED
1202D
S
TB
1
T
e
rm
in
al
Bloc
k
/ED
1202D
S
1 2
R6
8
124R
-0603SM
T
R6
8
124R
-0603SM
T
TP
7
TE
S
T
P
O
INT
TP
7
TE
S
T
P
O
INT
1
R6
6
15_4K/
SM
T
0603
R6
6
15_4K/
SM
T
0603
TP
1
6
TE
S
TP
O
INT
TP
1
6
TE
S
TP
O
INT
1
G
D1
2
LED
-SM
T
1206_GR
EEN
G
D1
2
LED
-SM
T
1206_GR
EEN
TP
1
1
TE
S
TP
O
INT
TP
1
1
TE
S
TP
O
INT
1
C7
0
10U
F
-16V_T
AN
T
B
SM
T
C7
0
10U
F
-16V_T
AN
T
B
SM
T
R1
6
5
OPEN
-0805SM
T
R1
6
5
OPEN
-0805SM
T
U1
0
PT
H
12060W
U1
0
PT
H
12060W
GN
D
1
VI
N
2
INHIBIT #
3
ADJ UST
4
SEN
S
E
5
VO
U
T
6
GND
7
TRA CK
8
MDW N
9
MUP
10
R76
3_3K-0603SMT
R76
3_3K-0603SMT
U1
4
PT
H
12060W
U1
4
PT
H
12060W
GN
D
1
VI
N
2
INHIBIT #
3
ADJ UST
4
SEN
SE
5
VO
U
T
6
GND
7
TRA CK
8
MDW N
9
MUP
10
C6
3
10U
F
-16V_T
AN
T
BSM
T
C6
3
10U
F
-16V_T
AN
T
BSM
T
C7
5
100NF -0603SM T
C7
5
100NF -0603SM T
TP
1
5
TE
S
TP
O
INT
TP
1
5
TE
S
TP
O
INT
1
R7
1
100K-0603SM
T
R7
1
100K-0603SM
T
R8
1
1M
-0603SM
T
R8
1
1M
-0603SM
T
C7
3
100NF -0603SM T
C7
3
100NF -0603SM T
F2 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
F2 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
C6
8
10U
F
-16V_T
AN
T
BSM
T
C6
8
10U
F
-16V_T
AN
T
BSM
T
R5
5
100K-0603SM
T
R5
5
100K-0603SM
T
C6
5
22U
F
-16V_T
AN
T
B
SM
T
C6
5
22U
F
-16V_T
AN
T
B
SM
T
U1
6
AM
S1503C
T
U1
6
AM
S1503C
T
VPO
W
ER
5
V
C
ON
T
R
OL
4
OU
T
P
U
T
3
AD
J
U
ST
_
G
N
D
2
SEN
SE
1
R
164
0R
-0805SM
T
R
164
0R
-0805SM
T
TP
1
4
TE
S
TP
O
INT
TP
1
4
TE
S
TP
O
INT
1
+
C7
2
330U
F
-F
KSM
T
+
C7
2
330U
F
-F
KSM
T
C7
1
10U
F
-16V_T
AN
T
B
SM
T
C7
1
10U
F
-16V_T
AN
T
B
SM
T
F4 F1
2
2
8
C
T-
ND
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
F4 F1
2
2
8
C
T-
ND
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
C6
0
10U
F
-16V_T
AN
T
B
SM
T
C6
0
10U
F
-16V_T
AN
T
B
SM
T
R8
0
BOU
R
N
S-3224W
-10K
R8
0
BOU
R
N
S-3224W
-10K
R5
9
0R
-0603SM
T
R5
9
0R
-0603SM
T
+
C5
5
4
7
0
UF-
FK
S
MT
+
C5
5
4
7
0
UF-
FK
S
MT
J9
8
JUMP
E
R1
J9
8
JUMP
E
R1
1
2
R2
0
3
49_9R
-0603SM
T
R2
0
3
49_9R
-0603SM
T
R7
3
0R
-0603SM
T
R7
3
0R
-0603SM
T
R
200
100R
-0805SM
T
R
200
100R
-0805SM
T
+
C6
2
330U
F
-F
K
SM
T
+
C6
2
330U
F
-F
K
SM
T
+
C5
9
330U
F
-F
K
SM
T
+
C5
9
330U
F
-F
K
SM
T
+
C6
9
330U
F
-F
K
SM
T
+
C6
9
330U
F
-F
K
SM
T
G
D1
4
LED
-SM
T
1206_GR
EEN
G
D1
4
LED
-SM
T
1206_GR
EEN
F1 F1
2
5
1
C
T-
ND
1
0
A
Fa
st-
B
lo
S
MT S
o
cke
te
d
Fu
se
F1 F1
2
5
1
C
T-
ND
1
0
A
Fa
st-
B
lo
S
MT S
o
cke
te
d
Fu
se
+
C5
6
100U
F
-F
K
SM
T
+
C5
6
100U
F
-F
K
SM
T
F3 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
F3 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
TP
1
2
TE
S
TP
O
INT
TP
1
2
TE
S
TP
O
INT
1
R
156
24K/
SM
T
0603
R
156
24K/
SM
T
0603
R5
3
10K-0603SM
T
R5
3
10K-0603SM
T
C6
1
10U
F
-16V_T
AN
T
B
SM
T
C6
1
10U
F
-16V_T
AN
T
B
SM
T
J3
22H
P037
Ma
le
P
o
we
r Ja
ck 2
.1
m
m
J3
22H
P037
Ma
le
P
o
we
r Ja
ck 2
.1
m
m
1
3
2
R4
6
470R
-1206SM
T
R4
6
470R
-1206SM
T
R
201
0R
-0603SM
T
R
201
0R
-0603SM
T
R6
3
OPEN
-0805SM
T
R6
3
OPEN
-0805SM
T
Q11
2N
2222/
SOT
23
Q11
2N
2222/
SOT
23
3
1
2
R6
2
1_8K-0603SM
T
R6
2
1_8K-0603SM
T
R4
4
470R
-1206SM
T
R4
4
470R
-1206SM
T
R5
8
100K-0603SM
T
R5
8
100K-0603SM
T
U1
2
AM
S1503C
T
U1
2
AM
S1503C
T
VPO
W
ER
5
V
C
ON
T
R
OL
4
OU
T
P
U
T
3
AD
J
U
ST
_
G
N
D
2
SEN
SE
1
G
D1
5
LED
-SM
T
1206_GR
EEN
G
D1
5
LED
-SM
T
1206_GR
EEN
R7
8
BOU
R
N
S
-3224W
-2K
R7
8
BOU
R
N
S
-3224W
-2K
TP
1
0
TE
S
TP
O
INT
TP
1
0
TE
S
TP
O
INT
1
TP
1
3
TE
S
TP
O
INT
TP
1
3
TE
S
TP
O
INT
1
R6
0
BOU
R
N
S-3224W
-10K
R6
0
BOU
R
N
S-3224W
-10K
Q13
2N
2222/
SOT
23
Q13
2N
2222/
SOT
23
3
1
2
R2
0
2
10K-0603SM
T
R2
0
2
10K-0603SM
T
R7
4
OPEN
-0805SM
T
R7
4
OPEN
-0805SM
T
R5
1
10K-0603SM
T
R5
1
10K-0603SM
T
R6
4
BOU
R
N
S
-3224W
-10K
R6
4
BOU
R
N
S
-3224W
-10K
Q10
2N
2222/
S
OT
23
Q10
2N
2222/
S
OT
23
3
1
2
R69
OPEN-0603SM T
R69
OPEN-0603SM T
R1
0
1
BOU
R
N
S
-3224W
-5
K
R1
0
1
BOU
R
N
S
-3224W
-5
K
G
D1
3
LED
-SM
T
1206_GR
EEN
G
D1
3
LED
-SM
T
1206_GR
EEN
G
D1
6
LED
-SM
T
1206_GR
EEN
G
D1
6
LED
-SM
T
1206_GR
EEN
C6
4
100NF -0603SM T
C6
4
100NF -0603SM T
TP
5
TE
S
TP
O
INT
TP
5
TE
S
TP
O
INT
1
F6 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
F6 F
1
228C
T
-N
D
5
A
Fa
st-
B
lo
S
M
T S
o
cke
te
d
Fu
se
C5
8
10U
F
-16V_T
AN
T
B
SM
T
C5
8
10U
F
-16V_T
AN
T
B
SM
T
R5
4
10K-0603SM
T
R5
4
10K-0603SM
T
TP
8
TE
S
TP
O
INT
TP
8
TE
S
TP
O
INT
1
R7
0
100K-0603SM
T
R7
0
100K-0603SM
T
G
D1
7
LED
-SM
T
1206_GR
EEN
G
D1
7
LED
-SM
T
1206_GR
EEN
TP
9
TE
S
T
P
O
INT
TP
9
TE
S
T
P
O
INT
1
R
163
0R
-0805SM
T
R
163
0R
-0805SM
T
R5
2
10K-0603SM
T
R5
2
10K-0603SM
T
R4
7
470R
-1
206SM
T
R4
7
470R
-1
206SM
T
R6
5
BOU
R
N
S-
3224W
-10K
R6
5
BOU
R
N
S-
3224W
-10K
G
D1
8
LED
-SM
T
1206_GR
EEN
G
D1
8
LED
-SM
T
1206_GR
EEN
R7
9
2_2K-0603SM
T
R7
9
2_2K-0603SM
T
U1
1
PT
H
03010W
U1
1
PT
H
03010W
GN
D
1
VI
N
2
INHIBIT #
3
ADJ UST
4
SEN
SE
5
VO
U
T
6
GND
7
TRA CK
8
MDW N
9
MUP
10
R6
1
0R
-0603SM
T
R6
1
0R
-0603SM
T
F5 F
1
228C
T
-N
D
5A F
a
s
t-
Bl
o SM
T
Soc
k
et
ed F
u
s
e
F5 F
1
228C
T
-N
D
5A F
a
s
t-
Bl
o SM
T
Soc
k
et
ed F
u
s
e
U2
5
SC
1592
U2
5
SC
1592
IL
IM
1
IN
2
CNT
L
3
GN
D
4
OU
T
5
SEN
SE
6
EN
7
TA
B
8
Q12
2N
2222/
SOT
23
Q12
2N
2222/
SOT
23
3
1
2
J6
0
H
EAD
ER
3x
1
J6
0
H
EAD
ER
3x
1
1V
1
AD
J
2
1.
2V
3
U1
5
PT
H
12060W
U1
5
PT
H
12060W
GN
D
1
VI
N
2
INHIBIT #
3
ADJ UST
4
SEN
SE
5
VO
U
T
6
GND
7
TRA CK
8
MDW N
9
MUP
10
R4
8
470R
-1206SM
T
R4
8
470R
-1206SM
T