Amc7812Evm Schematic (3 Of 3) - Texas Instruments AMC7812EVM-PDK User Manual

AMC7812EVM Documentation
Supply Regulation
USEWALL WART T1094-P5P-ND 19-30V
J5
1
C33 C34
C35
3
22 F 4.7 F 4.7 F
2
PJ-102A
GND GND
D1
MMSZ4689-V
5.1V
GND
Jumper Table:
- JP3 (AVDD/DVDD): Onboard / external AVDD/DVDD supply select.
1-2 selects onboard supply (default +5V)
2-3 selects external supply (pin J6-1)
- JP4 (AVCC): Onboard / external AVCC supply select.
1-2 selects onboard supply (default +14V)
2-3 selects external supply (pin J6-2)
- JP5 (IOVDD): Onboard / external IOVDD supply select.
1-2 selects onboard supply (default VDUT)
2-3 selects external supply (pin J6-3)
24
AMC7812EVM-PDK User's Guide
U3
R44 R45
26 10
VIN VOUT
49.9k 174k
11
VOUT
27 12
INH/UVLO VOUT
13
VOUT
R49 R50
R51 178k 31 14
RT/CLK VOUT
24.9k 13.7k
15
VOUT
C42 NI
28 39
SS/TR VOUT
R54 NI
29 36
STSEL VADJ
GND
GND
35
PWRGD
1
AGND
4
AGND
6 5
PH AGND
7 30
PH AGND
21 32
PH AGND
22 33
PH AGND
23 34
PH AGND
24 37
PH AGND
38 9
PH GND_PT
41 8
PH GND_PT
16
PGND
2 17
DNC PGND
3 18
DNC PGND
25 19
DNC PGND
20
PGND
40
PGND
LMZ35003RKG
U5
3 2
IN OUT
C44
4 1
+3.3V TAB GND
10 F
LM1086CS-3.3
GND
GND
Onboard VREF
AVDD/DVDD U6
2 6
VIN VOUT
C48 C49
5
TRIM/NR
10 F 0.1 F
7
NC
3
TEMP
8
DNC
1 4
DNC GND
GND
REF5025IDGK
Figure 36. AMC7812EVM Schematic (3 of 3)
Copyright © 2010–2014, Texas Instruments Incorporated
+14V
C36 C37 C38 C39
R47
R48 47 F 47 F 10 F 1 F 0
165k
R52 NI
GND GND R53 NI
R55 NI
R56 0
R57 NI
VDUT
R58 NI
R59 0
R60 NI
R61 NI
GND
GND
GND
+3.3V
C45
R64
10 F
120
GND
D3
3.3V
GND
2.5V REF
R68
C50 0.47
1 F C51
10 F
GND
GND
U4
15 1
IN OUT
16 20 C40 C41
IN OUT
R46
47 F 10 F 300
13 3
EN SENSE
14
NR
4 C43 GND
6P4V2
5 19
6P4V1 NC
1 F
6 18
3P2V NC
8 17
1P6V NC
9 2
0P8V NC
10
0P4V
11 7 GND
0P2V GND
12
0P1V PAD
TPS7A4700RGW
GND
Power Selection
R62 0
+5V
R63 NI
+3.3V JP3
AVDD/DVDD
TP3
2
AVDD/DVDD
C46
10 F
GND
R65 0
+14V
JP4
AVCC
R66 NI TP4
+5V
2
R67 NI
AVCC
+3.3V
C47
10 F
GND
R69 0
VDUT
JP5
IOVDD
R70 NI TP5
+5V
2
R71 NI
IOVDD
+3.3V
C52
10 F
GND
SBAU177D – September 2010 – Revised August 2014
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+5V
D2
5V
AVDD/DVDD
AVCC
J6
1
2
3
4
ED555/4DS
EXT POWER
GND
IOVDD