FIGURE B-2:
SAMA5D3 SCHEMATICS - BOARD POWER I/O AND REGULATORS
1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
Page Title:
Project Name:
Board Power I/O and Regulators
SAMA5D3-EnetDevSys (Knave)
PN:
03-10841
Description:
Date:
Size:
Sheet
of
Rev
B
2
6
1
3/22/2018
Designer:
Jennifer Hancock
SAMA5D3 EnetDevSys FDB baseboard
Designed with
Microchip Technology, Inc.
USB/Network Group - UNG
www.Microchip.com
Altium.com
0.1uF
C27
3V3
3V3
10k
R18
5V
10000pF
C47
1uF
C49
249k
1%
R32
240k
1%
R31
0.1uF
C48
10R
R29
2V5
1V2
1v2out
3V3
10k
R24
68k
R25
20k
R27
102k
R19
20k
R20
i
Power
i Power
i
Power
i
Power
i
Power
i
Power
1V8
5V
12V_F
1V2
0.1uF
C88
0.1uF
C89
0.1uF
C90
0.1uF
C91
0.1uF
C92
0.1uF
C93
VDDIOP1
0.1uF
C97
0.1uF
C98
0.1uF
C99
0.1uF
C100
1V8
0.1uF
C103
0.1uF
C104
0.1uF
C108
0.1uF
C109
VDDIOM
0.1uF
C102
0.1uF
C110
VDDOSC
0.1uF
C111
VDDPLLA
VDDANA
GNDUTMI
GNDUTMI
VDDUTMIC
0.1uF
C116
0R
R36
3V3
1uF
C95
i
Power
0.1uF
C2
4.7uF
C23
10uF
C43
10uF
C44
10uF
C45
VDDIOP0
VDDIOM
VDDOSC
VDDANA
10uH
L3
2.2R
R33
3V3
VDDPLLA
VDDUTMIC
10uH
L5
10uH
L4
2.2R
R34
2.2R
R35
1V2
i
Power
i
Power
i
Power
i
Power
i
Power
3V3_R
i
Power
1V2_R1
i
Power
i
Power
4.7uF
C107
4.7uF
C112
VDDIOM
3V3
VDDOSC
VDDPLLA
0.1uF
C113
1V2
VDDIOP1
1V8
VDDANA
0.1uF
C114
0.1uF
C115
4.7uF
C87
4.7uF
C7
4.7uF
C28
4.7uF
C22
4.7uF
C29
4A
10k
DNP
R4
10k
DNP
R10
1V2 PG
i
Power
i Power
2
3
1
SW2
TP60
2V5
TP1
5VPG
0R
R1
TP59
i
Power
1V2_R3
12V_EXT
0.1uF
C46
"3V3"
12V / 2A - 4A
On-board current < 2A
5V / 6A
On-board current < 2A
1.8V / 1A
On-board current < 0.2A
2.5V / 1A
On-board current < 0.4A
1.2V / 3A
On-board current < 1.6A
Power up:
All 1V2 rails should come up at least 1ms after the other power rails.
Reset should be release after 1V2 comes up.
Power down:
Voltage rails can be removed in any sequence.
SAMA5D36 Power Sequencing Requirements
SAMA5D36 Power Distribution
1k
R9
1k
R21
100R
R86
22R
R17
1v2_L
i Power
TP19
TP17
TP22
TP24
TP23
TP25
TP26
2200pF
C4
510k
R148
TP6
i
Power
20k
R8
0.1uF
C36
i
Power
47uF
C34
47uF
C35
TP12
0.1uF
C37
0.1uF
DNP
C38
0R
R26
10k
1%
R23
1.37k
1%
R149
15pF
C5
10uF
25V
C32
0.1uF
50V
C33
12V_SW
TP34
10k
R28
0.1uF
C39
100k
R143
3V3PG
Switching Frequency = ~500kHz
12V Pwr Off/On
5VFB
5VSW
5VFQ
5VEN
"5V Ext."
2.2k
R22
47uF
DNP
C25
47uF
DNP
C26
120uF
DNP
C30
VDDIOP0
VDDIOP1
3V3
2V5_EXT
1V8
Install only one jumper to select one
voltage at a time. Voltage LED circuit
is shown on page 6.
5V
10000pF
C60
1uF
C61
0.1uF
C63
10R
R161
3V3
3v3out
i
Power
i
Power
0.1uF
C54
4.7uF
C53
10uF
C56
10uF
C57
10uF
C58
10k
DNP
R160
10k
R159
TP87
0.1uF
C59
3V3 / 3A
On-board current < 2A
3v3_L
i Power
TP86
TP21
TP88
5VPG
12V_SW
1.91k
1%
R144
3V3PG
Grn
D2
GREEN
D3
MMBD914-7
D9
470nH
L1
470nH
L2
5VDD
2
PWRGD
47
PVDD
4
PVIN
14
BST
42
ANODE
40
FREQ
50
EN
48
GND
1
VIN
49
PGND
6
RIA
38
VOUT
21
FB
46
RIB
39
SW
10
ILIM
51
5VDD
3
PGND
45
PVDD
5
PGND
7
PGND
8
PGND
52
SW
11
SW
12
SW
31
SW
32
SW
33
SW
34
PVIN
15
PVIN
16
PVIN
17
PVIN
18
PVIN
19
VOUT
22
VOUT
23
VOUT
24
VOUT
25
VOUT
26
VOUT
27
VOUT
28
VOUT
29
RIA
37
RIA
36
ANODE
41
BST
43
BST
44
NC
9
NC
13
NC
20
NC
30
NC
35
PVIN ePAD
53
ePAD VOUT
54
ePAD SW
55
PGND ePAD
56
MIC45205-1Y
U3
1
2
3
4
5
6
J2
33pF
C42
SHDN
1
GND
3
VIN
2
VOUT
4
ADJ
5
GND (TAB)
6
MCP1826T-ADJ
U2
SHDN
1
GND
3
VIN
2
VOUT
4
ADJ
5
GND (TAB)
6
MCP1826T-ADJ
U4
SS
7
FB
6
EN
4
SNS
5
PVIN
11
SS
FB
EN
SNS
PVIN
AGND
8
PGND
12
ePAD
13
PG
3
SW
1
PVIN
10
SW
2
AVIN
9
MIC23303YML
U5
SS
7
FB
6
EN
4
SNS
5
PVIN
11
SS
FB
EN
SNS
PVIN
AGND
8
PGND
12
ePAD
13
PG
3
SW
1
PVIN
10
SW
2
AVIN
9
MIC23303YML/ADJ
U6
4A FB
F1
VDDIODDR_1
D13
VDDIODDR_2
F14
VDDIODDR_3
G10
VDDIODDR_4
G13
VDDIODDR_5
H11
ADVREF
L5
VDDANA
L6
VDDFUSE
R3
VDDPLLA
R10
VDDIOM_1
P12
VDDIOM_2
T16
VDDOSC
U11
VDDUTMII
U13
VDDUTMIC
V13
GNDCORE_1
A16
GNDCORE_2
C9
GNDIODDR_1
E14
GNDIODDR_2
F10
GNDIODDR_3
F13
GNDIODDR_4
F15
GNDIODDR_5
H14
GNDIOP_1
J7
GNDIOM_1
J11
GNDANA
L4
GNDIOP_2
N11
GNDCORE_3
N13
GNDFUSE
P4
GNDPLL
P10
GNDUTMII
R12
GNDCORE_4
T8
GNDOSC
T11
GNDBU
T13
GNDCORE_5
T14
GNDIOM_2
T17
GNDIOP_3
U7
GNDCORE_6
V17
GNDIOP_4
E5
VDDIOP10_1
G7
VDDIOP11_1
L11
VDDIOP11_2
M4
VDDIOP10_2
V11
VDDBU
V15
VDDCORE_1
C5
VDDCORE_2
C7
VDDCORE_3
D14
VDDCORE_4
T7
VDDCORE_5
T15
VDDCORE_6
U17
VDDCORE_7
V7
VDDIODDR_1
VDDIODDR_2
VDDIODDR_3
VDDIODDR_4
VDDIODDR_5
ADVREF
VDDANA
VDDFUSE
VDDPLLA
VDDIOM_1
VDDIOM_2
VDDOSC
VDDUTMII
VDDUTMIC
GNDCORE_1
GNDCORE_2
GNDIODDR_1
GNDIODDR_2
GNDIODDR_3
GNDIODDR_4
GNDIODDR_5
GNDIOP_1
GNDIOM_1
GNDANA
GNDIOP_2
GNDCORE_3
GNDFUSE
GNDPLL
GNDUTMII
GNDCORE_4
GNDOSC
GNDBU
GNDCORE_5
GNDIOM_2
GNDIOP_3
GNDCORE_6
GNDIOP_4
VDDIOP10_1
VDDIOP11_1
VDDIOP11_2
VDDIOP10_2
VDDBU
VDDCORE_1
VDDCORE_2
VDDCORE_3
VDDCORE_4
VDDCORE_5
VDDCORE_6
VDDCORE_7
ATSAMA5D36A-CU
U7H
33pF
C55
0R
DNP
R145
464k
R162
107k
R163
1
2
3
2.5 mm
12V (typ)
BARREL JACK
J1
220R
FB3
220R
FB1
220R
FB7
220R
FB5
220R
FB11
220R
DNP
FB2
A copper plane for
GNDUTMI covers all
USB components
Schematics
2018
Microchip Technology Inc.
D
S
5
0002789A-p
age
37