EB-GS2972
Evaluation Board User Guide
50283 - 2
May 2012
12 of 22
2.4 Power Schematic
Figure 2-4: Power
S
chematic
C
129
10u
C
82
10n
+1.2V
TP2
C
2
6
0.1u
C
102
10n
Between pins 33 an
d
30
SR
C
-A
Heat sink
on
c
opper
C
27
22u
Between pins 33 an
d
30
SR
C
-B
IN
8
SHDN
5
A
G
ND
4
P
G
ND
6
SENSE
3
OUT
2
N
C
1
N
C
7
U4
LT3021ES8-1.2
500mA
C
99
10n
C
100
10n
C
101
10n
C
98
10n
C
95
10u
DE
C
OUPLIN
G
@ PIN 5
G
ND
Between pins 1
6
an
d
17
SR
C
-B
Between pins 1
6
an
d
17
SR
C
-A
R7
6
0R
C
134
10u
C
135
10u
G
ND
1V8_SR
C
4382
C
13
6
10u
C
137
0.1u
C
138
0.1u
V
CC
_1.8V
1V8_
C
ore_
G
S4911
V
CC
_1.8V
C
112
10u
G
ND
C
114
0.1u
C
113
10u
C
111
0.1u
R71
0R
1
2
3
J
P7
()
V
CC
_3.3V
1.8V
3.3V
V
CC
_1.8V
IO V
IO_V
C
88
10n
C
8
6
1u
5V
R32
240R
R
66
49.9K
R4
1.15K
+1.8V
C
84
0.1u
TP3
PWR
C
85
22u
Heat sink
on
c
opper
IN
8
SHDN
5
A
G
ND
4
P
G
ND
6
SENSE
3
OUT
2
N
C
1
N
C
7
U1
6
LT3021ES8-1.8
V
CC
A
1
G
ND
2
A
3
B
4
DIR
5
V
CC
B
6
SN74LV
C
1T45DBVR
U15
C
87
22u
500mA
V
CC
_3.3V
PWR
G
D_3V3
C
90
1u
R2
3.57K
V
CC
_1.8V
C
12
22u
G
ND
G
ND
V
CC
_5V
IN
5
IN
6
IN
7
IN
8
BIAS
10
P
G
9
OUT
1
OUT
18
OUT
19
OUT
20
N
C
17
FB
1
6
EN
11
SS
15
G
ND
12
N
C
13
N
C
14
N
C
2
N
C
3
N
C
4
Pa
d
21
U14
TPS74201_R
G
W
D7
LN
J
311
G
8P
G
ND
V
CC
_5V
G
ND
G
ND
G
ND
V
CC
_3.3V
V
CC
_5V
V
CC
_3.3V
V
CC
_5V
G
ND
G
ND
PWR
G
D_3V3
POWER SUPPLIES
C
118
10n
C
117
10n
G
ND
IO_V_
G
S4911
DE
C
OUPLIN
G
@ PINS18,31,38,50,
6
2
R
6
8
0R
C
9
6
0.1u
C
97
0.1u
C
78
10n
C
75
10n
C
7
6
10n
C
77
10n
C
74
10n
V
CC
_3.3V
C
70
1u
IO_V
+1.2V
Between pins 43 an
d
42
SR
C
-A
Between pins 43 an
d
42
SR
C
-B
3V3_SR
C
4382
R72
2R
C
20
EEV-FK1
C
221XP
R
6
9
0R
C
91
22u
G
ND
C
139
10u
Between pins 9 an
d
10
SR
C
-A
C
140
0.1u
DE
C
OUPLIN
G
@
PINS 2
6
,44
C
104
10u
G
ND
C
105
10u
J
1
5V Input
G
ND
VDD_XTAL_
G
S4911
V
CC
_3.3V
C
107
10u
C
10
6
10u
R70
0R
C
115
0.1u
3V3_PLL_SR
C
4382_A
C
130
10u
G
ND
G
ND
R75
0R
C
131
10u
R73
2R
3V3_SR
C
4382
Between pins 9 an
d
10
SR
C
-B
C
142
0.1u
C
141
10u
G
ND
3V3_PLL_SR
C
4382_B
G
S4911
d
e
c
ouplin
g
SR
C
4382 power
d
e
c
ouplin
g
3V3_SR
C
4382
IO_V_SR
C
4382
G
ND
G
ND
C
110
10u
1V8_
G
S4911
V
CC
_1.8V
C
73
10u
G
ND
C
80
10u
C
92
0.1u
C
81
0.1u
R
6
7
0R
C
108
0.1u
C
72
0.1u
C
94
0.1u
C
93
10u
C
109
0.1u
IO_V
V
CC
_3.3V
C
83
10n
DE
C
OUPLIN
G
@ PINS 3,10,14,45,53,54
Summary of Contents for EB-GS2972
Page 14: ...EB GS2972 Evaluation Board User Guide 50283 2 May 2012 14 of 22 Figure 3 2 Layer 2 Ground ...
Page 15: ...EB GS2972 Evaluation Board User Guide 50283 2 May 2012 15 of 22 Figure 3 3 Layer 3 Power ...
Page 16: ...EB GS2972 Evaluation Board User Guide 50283 2 May 2012 16 of 22 Figure 3 4 Layer 4 Signal 1 ...
Page 17: ...EB GS2972 Evaluation Board User Guide 50283 2 May 2012 17 of 22 Figure 3 5 Layer 5 Signal 2 ...
