Figure 10. Power Supply Schematic - STMicroelectronics EVALSPEAr320CPU User Manual

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Figure 10. Power supply schematic

8
C94 Place close to IN(4,5) PIN
J11 J11
1
U16 U16
DC POWER DC POWER
4
2.1mm 2.1mm
IN
5
2
IN
3
10
EN
DC POWER SOCKET 2.1MM DC POWER SOCKET 2.1MM
4
C98 C98 1
NC
8
NC
9
NC
11
PAD1
12
PAD2
ST STBP120C ST STBP120C
3
AVCC AVCC
R62 R62 R63 R63
C87 C87
1.2V
R61 R61
R56 R56
C88 C88
R22 R22 R65 R65
2
C89 C89 AVCC
2.2 nF X7R 2.2 nF X7R
3.3V
R57 R57
C91 C91
R70 R70
R69 R69
R64 R64
C90 C90
470 pF X7R 470 pF X7R
1
8
7 6
PD1 PD1
1
PADX2-80H60 PADX2-80H60
2
6
OUT
7
OUT
3
A A
Z1 Z1
FLT
MMSZ5232BT1 MMSZ5232BT1
K K G G
D4 D4
R28 R28
4.7 Kohm 4.7 Kohm
2
GND
AVCC
C65 C65 1.8V
44
46
10 uF X5R 10V 10 uF X5R 10V
R49 56K Ohm R49 56K Ohm
C37 C37
39
1.8V C66 C66 5V
10
R68 R68
10 uF X5R 10V 10 uF X5R 10V
From farthest 1.8V point
11
15 Kohm 15 Kohm 12
13
24
37
21
C67 C67
22
16
10 uF X5R 10V 10 uF X5R 10V
15
14
23
34
Place near pin 33
R67 R67 C74 C74
33
28
10 uF X5R 10V 10 uF X5R 10V
27
26
25
35
47
From farthest point
36
48
41
AVCC
R50 R50
R66 R66
R60 R60
0 Ohm 0 Ohm
AVCC
R71 R71
C38 C38
68 Kohm,NC 68 Kohm,NC
0.1 uF X5R 10V 0.1 uF X5R 10V
7 6
5
5V
+ + + +
C82 C82 C83 C83
C63 C63
U10 U10
3
LDOIN VOUT_1S8
DSCG L1 L1
7
VSW1_1S8
2 8
2.2 uH 1.2A 2.2 uH 1.2A
SET_SWF VSW2 _1S8
4
CSNS
SET_PH1
L2 L2
9 19
VIN1_1S8 VSW1_1S05
20
2.2 uH 1.2A 2.2 uH 1.2A
VIN2_1S8 VSW2_1S05
VFB_1S8
COMP_1S8
SS_1S8 L3 L3
31
PG_1S8 VSW1_1S5
32
1 uH 1.7A 1 uH 1.7A
EN_1S8 VSW2_1S5
VIN1_1S05
VIN2_1S05
43 VTT
VTT
45
VFB_1S05 VTTREF
COMP_1S05
SS_1S05
PG_1S05
EN_1S05
C92 C92
5
33 nF X7R 50V 33 nF X7R 50V
SGND1_1S8
6
VIN_1S5 SGND2_1S8
17
SGND1_1S05
18
VFB_1S5 SGND2_1S05
30
COMP_1S5 SGND2_1S5
29
SS_1S5 SGND1_1S5
PG_1S5
1
EN_1S5 AGND1
38
AGND2
40
VTTFB AGND3
EN_VTT
42
VTTGND
49
VCC THERMAL
AVCC
ST PM6641 ST PM6641
REF3 REF3 REF4 REF4
FIDUCIAL FIDUCIAL FIDUCIAL FIDUCIAL
AVCC
5
4 3
5V
5V
R59 R59
4.3 Ohm 4.3 Ohm
AVCC
C35 C35
0.1 uF X5R 10V 0.1 uF X5R 10V C36 C36
Place near PM6641 Place faraway
1.8V
10 uF X5R 10V 10 uF X5R 10V
+ +
C84 C84
C68 C68
47 uF Tan 10V 47 uF Tan 10V
1.2V
10 uF X5R 10V 10 uF X5R 10V
+ +
C85 C85
C69 C69
47 uF Tan 10V 47 uF Tan 10V
3.3V
10 uF X5R 10V 10 uF X5R 10V
+ +
C86 C86
C70 C70
47 uF Tan 10V 47 uF Tan 10V
R51 R51
0 ohm,NC 0 ohm,NC VREF
VREF
C93 C93
22 uF Y5V 6.3V 22 uF Y5V 6.3V
R52 R52
0 ohm,NC 0 ohm,NC
5V 3.3V 2.5V
R72 R72 R41 R41 R75 R75
680 Ohm 680 Ohm 330 Ohm 330 Ohm
1K Ohm 1K Ohm
D7 D7 D8 D8 D9 D9
GREEN GREEN GREEN GREEN GREEN GREEN
4 3
U9 U9
3
Vin
1
GN
LD LD
ST L ST L
C71 C71
10 uF X5R 10 uF X5R
C72 C72
10 uF X5R 10 uF X5R
C73 C73
10 uF X5R 10 uF X5R