2*25W @4
Ω
TPA3123
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©
2004-2009 Sure Electronics Inc.
Chapter 5. Appendix
FIGURE 5-1 SCHEMATIC
AA-AB018_Ver1.0_Page 15
J2
CH1
1
2
J1
OUT1+
1
PIN10
PIN12
J6
OUT1-
1
D2
LED/G
J12 CON2
2
1
VCC
J3
CON4
1
2
3
C18
0.1uF
VCC
最大瞬间电流
5A
C7
1uF/50V
J13 CON2
1
2
C29
0.1uF
C17
1uF/50V
+
C23
470uF/35V
1
2
L1
33uH
C1
0.22uF/MKP
SW1
SW DIP-2/SM
1
2
4
3
R8
10K
VCC
VCC
VCC
MUTE
VCC
C4
1uF/50V
C26
0.22uF//MKP
+
C25
470uF/35V
1
2
VCC
C13
0.22uF
VCC
VCC
C9
1uF/50V
GAINA1
SD
C5
0.47uF/MKP
C3
0.22uF
C20
1uF/50V
C11
0.47uF/MKP
靠近芯片
J4
CON2
2
1
J5
OUT1-
1
C12
1uF/50V
L2
33uH
+
C14
470uF/35V
1
2
VCC
J7
CH2
1
2
J8
CON2
1
2
VCC
R1
4.7K
C30
1uF/50V
GAINA0
VCC
PIN1
PIN3
MUTE
VCC
C16
1uF/50V
VCC
+
C2 470uF/35V
1
2
GAINA0
U1
TPA3123/HTSSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PVCCL1
SD
PVCCL2
MUTE
LIN
RIN
BYPASS
AGND1
AGND2
PVCCR1
VCLAMP
PVCCR2
PGNDR1
PGNDR2
ROUT
BSR
GAIN1
GAIN0
AVCC1
AVCC2
BSL
LOUT
PGNDL1
PGNDL2
J11
DJ005B
3
2
1
GAINA1
C21
1uF/50V
R6 0R
R5
1
0K
+
C22
470uF/35V
1
2
C15
1uF/50V
靠近芯片
SD
J10 CON2
1
2
C6
1uF/50V
C27
0.22uF//MKP
C8
0.1uF
D1 SS34
1
2
C10
0.22uF/MKP
C28
0.1uF
J9
OUT1+
1
SD
C19
0.1uF
VCC
R3
4.7K
R7
100K
VCC
R4
1
0K
R2
4.7K
1
+
C24
470uF/35V
2
Note:
The above schematic is used for reference only. There might be a tiny difference
in production batch.
