IN
1
OUT
3
GND
2
TAB
4
U2
LM2940IMP-12/NOPB
GND
1A
D1
0.047µF
C1
0.1uF
C13
GND
4700pF
C12
182k
R2
5600pF
C7
0.47µF
C8
0.1uF
C9
GND
GND
GND
GND
GND
+12V
47µF
C5
10µF
C38
GND
GND
GND
100µF
C10
4.99k
R39
1.00k
R40
GND
GND
3A
D3
GND
GND
VCC
9
SS
7
SW
1
FB
6
RTN
5
VIN
10
BST
2
RON/SD
8
DAP
11
ISEN
3
SGND
4
U1
LM5010ASD/NOPB
PVDD
0.1µF
50V
C2
GND
GND
2.2µF
50V
C4
PVDD
GND
1µF
50V
C3
0.01µF
50V
C11
RANGE 18V-36V
47µF
50V
C39
+15V
+12V
360
R34
GND
Green
D5
3.3V
3.3V
3.3V
Hi Current Shunt
+15V
J29
PVDD-IN
J32
12V
J33
3.3V
1.50k
R58
GND
Green
D6
12V
+12V
15V-VR
4.7µF
C6
100µH
1.5A
L1
OUTPUT
2
GND
1
IN
3
OUTPUT
4
U3
TLV1117-33IDCY
10.0k
R38
VMID
0.1uF
C51
GND
GND
10µF
C53
10µF
C70
0.1uF
C72
+12V-OA
0.1uF
C15
GND
GND
10µF
C16
+12V
GND
10µF
C81
10uH
0.8A
L6
10.0k
R37
+12V-OA
10µF
C89
0.1uF
C90
10µF
C91
12V-VR
3.3V-VR
GND
GND
GND
GND
NT3
Net-Tie
GND
J1
J31
RESET
Q2
+12V
GND
Orange
D2
OTW
+12V
GND
GND
CLIP_OTW
MONITORS
100
R33
100
R35
FAULT
7uH 6.5A
L2
MA5173
0.68µF
C24
GND
1000pF
C25
DNP
DNP
GND
0.68µF
C35
GND
GND
0.68µF
C43
GND
GND
0.68µF
C59
GND
GND
GND
PVDD
GND
GND
PVDD
OUT_A
OUT_B
OUT_C
0.033µF
C27
GND
1µF
C32
GND
GND
GND
0.033µF
C29
0.033µF
C52
0.033µF
C54
RESET
VBG
1
2
J21
GND
0.01µF
C49
GND
GND
1µF
C40
0.1uF
C14
GND
0
R3
GVDD_AB
0.1uF
C22
3.3
R6
GND
1
2
3
J6
3.3V
1
2
3
J5
3.3V
M1
M2
GND
GND
M1
M2
INPUT_A
INPUT_B
INPUT_A
INPUT_B
INPUT_C
INPUT_D
GND
3.3V
SLAVE MODE
10.0k
R15
20.0k
R16
30.0k
R17
MASTER MODE
MASTER MODE AM1
MASTER MODE AM2
GND
FREQUENCY
22.0k
R13
ADJUST
OUT_D
C_START
INPUT_D
INPUT_C
47k
R24
1.00k
R29
1.00k
R31
0.1µF
C68
GND
100pF
C64
100
R23
GND
100pF
C58
100
R19
GND
100pF
C30
100
R10
GND
100pF
C19
100
R5
GND
MODE PIN SELECTION
M2
M1
0
1
0
1
0
1
0
1
INPUT MODE
OUTPUT
DESCRIPTION
2N + 1
2N/1N + 1
2N + 1
1N + 1
2xBTL
1xBTL + 2xSE
1xPBTL
4xSE
STEREO BTL OUTPUT, A D MODE
2.1 BTL + SE MODE, AD MODE
PARALLEL BTL OUTPUT, A D MODE
SINGLE ENDED OUTPUT, A D MODE
3.3V
IN = SE
OUT = BTL
1µF
C33
1µF
C47
1µF
C48
1000pF
C36
DNP
DNP
1000pF
C44
DNP
DNP
1000pF
C60
DNP
DNP
HEATSINK
GND
Black
J20
GNDCD
OUT_A
OUT_B
OUT_C
OUT_D
OUTA
OUTB
OUTC
OUTD
Black
J11
GNDAB
1
2
3
4
5
6
7
8
J16
OA
OB
OC
OD
GND
1µF
C77
DNP
DNP
3.30
R54
DNP
DNP
GND
1µF
C78
DNP
DNP
1µF
C79
DNP
DNP
1µF
C80
DNP
DNP
TP13
RESET
TP14
FAULT
TP1
CLIP_OTW
TP6
GND
TP2
PWMA
TP7
PWMC
TP5
PWMB
TP9
PWMD
TP4
PVDD-AB
TP8
PVDD-CD
TP3
OUTA
TP10
OUTB
TP11
OUTC
TP12
OUTD
Hi Current Shunt
GND
GND
6
4
5
1
3
S1
RESET
GND
0.1uF
C67
GND
0.1uF
C82
J13
DNP
DNP
FAULT
0
R30
3.30k
R26
GND
GND
7uH 6.5A
L3
MA5173
7uH 6.5A
L4
MA5173
7uH 6.5A
L5
MA5173
PVDD
100k
R61
0.1uF
C69
GND
GVDD_CD
0
R1
1µF
C83
1µF
C84
GND
VDD
GVDD_AB
VDD
GVDD_CD
3.3V
FAULT
CLIP_OTW
GND
OSCILLATOR
SYNC
INTERFACE
4
1
2
3
J17
0.47µF
C50
47k
R28
MODE
SELECTION
GND
1
GND
2
MR
5
RESET
3
VDD
4
U7
TPS3802K33DCKR
GND
1500µF
C21
1500µF
C34
1500µF
C42
1500µF
C56
2200µF
C31
2200µF
C46
Hi Current Shunt
Hi Current Shunt
Hi Current Shunt
3.30
R55
DNP
DNP
3.30
R56
DNP
DNP
3.30
R57
DNP
DNP
Q1
1µF
C41
TP26
FREQ_ADJ
DNP
TP25
M1
DNP
TP24
OC-ADJ
DNP
TP20
INA
DNP
TP21
INB
DNP
TP22
INC
DNP
TP23
IND
DNP
TP18
DVDD
DNP
TP19
AVDD
DNP
TP15
GVDD-AB
DNP
TP16
VDD
DNP
TP17
GVDD-CD
DNP
TP27
VBG
DNP
INA
INB
INC
IND
FROM
ANALOG
FRONT END
OUTA
TO
ANALOG
FRONT END
OUTB
OUTC
OUTD
CLIP_OTW
FAULT
RESET-SW
TO
AIB
CONNECTOR
RESET-SW
OC_IOP
OC_IOM
VDD-RST
AVDD
14
BST_A
44
BST_B
43
BST_C
24
BST_D
23
VBG
20
C_START
15
DVDD
11
FAULT
19
FREQ_ADJ
8
GND
12
GND
13
GND
25
GND
26
GND
33
GND
34
GND
41
GND
42
GVDD_AB
1
GVDD_CD
22
INPUT_A
5
INPUT_B
6
INPUT_C
16
INPUT_D
17
M1
3
M2
4
OC_ADJ
7
OC_IOM
9
OC_IOP
10
CLIP OTW
21
OUT_A
39
OUT_A
40
OUT_B
35
OUT_C
32
OUT_D
27
OUT_D
28
PVDD_AB
36
PVDD_AB
37
PVDD_AB
38
PVDD_CD
29
PVDD_CD
30
PVDD_CD
31
RESET
18
VDD
2
U4
TPA3251D2DDVR
Red
D4
FAULT
GND
1µF
C85
DNP
DNP
1µF
C86
DNP
DNP
J36
+12V
+12V GVDD
GVDD
GVDD
GVDD
GVDD
J9
J2
J22
J23
J24
J25
8.87k
R32
Copyright © 2017, Texas Instruments Incorporated
EVM Design Documents
18
SLAU751 – November 2017
Copyright © 2017, Texas Instruments Incorporated
TPA3251 Evaluation Module
Figure 29. TPA3251EVM Schematic 2
Figure 30. TPA3251EVM Schematic 3
