Sure Electronics 2X15W User manual

2X15W Class-D Stereo PowerAmplifier Kit User’s Guide
4
Contact Us
Sure Electronics Co., Ltd.
East zone, 3F, Building 6
Jingang Technology Innovation Center
No.108 Ganjiabian Rd (ZIP: 210000)
Qixia District
Nanjing
P.R.China
Tel: [phone]
Fax: [phone]
Website: www.sure-electronics.com
Email: [email protected]
1
Overview
This is a Class-D audio amplifier kit designed to make use of the TPA3122D2 power
amplifier IC. Completing this kit, you will have a fully functional, dual-channel audio amplifier.
This amplifier is capable of delivering up to 15W per channel (8Ωat 28V) and can be
powered by a wide range of 10V to 30V. Gain can be selected via a 2-slide switch from
weak(20dB), low(26dB), medium(32dB) or high(36dB). The efficiency of TPA3122D2
eliminates the need for an external heat sink when playing music. All components are
through-hole and easy to be soldered on the PCB. This kit includes:
Item Description Quantity
Resistors
R1,R2,R3,R4,R5,R6,
R7,R8,R9
10Kohm 1/4W 9
C1,C2,C5,C6,C9,C12 0.68uF(684K) mylar 6
C3,C4,C13,C14,C15,
C18,C21,C22
1uF(105) monolithic 8
Capacitors
C7,C8,C10,C11,C16,
C17,C19,C20
220uF 35V electrolytic 8
Inductors L1,L2 10uH 3A 2
Amplifier Chip U1
TPA3122D2 20-pin DIP
package + 20-pin IC socket
1
Diode D1 1N5822 3A 40V 1
LED D2 3mm Green 1
Printed Circuit Board
121.90(L) × 91.40(W) × 1.60(H)
±0.20mm
1
DC Input Jack J12 DJ005B 3pin 1
2-Slide Switch SW1 2.54mm pitch 1
RCA Sockets J3,J4 red (J3), white (J4) 2
Accessory - 3.5 to RCA Cable 1
Note: As to audio signal output, we don’t provide components which should be prepared by
users themselves.

2X15W Class-D Stereo Power Amplifier Kit User’s Guide
2
PCB Layout
3
Some interfaces are reserved on the PCB providing another way of input and output, such
as audio signal input (J1, J2), audio signal output (J5, J6 ) and power input (J11). What you
need to do is to get some screw terminals and solder them. Except J5 and J6, you can also
install banana jacks in J7, J8, J9 and J10 to output audio signal.
Circuit Diagram
VCC VCC VCC
J10 OUT2+
1
+
C20
220uF
12
+
C11 220uF/ 35V
1 2
VCC
J7 OUT1+
1
J9 OUT2-
1
SD
J3
CH1
1 2
J11 CON2
1
2
J2 CON2
1
2
J5 CON2
1
2
VCC
+
C8 220uF/35V
1 2
R8 10K
SD
C14 1uF
SW1
SW-2/DIP
1
2
4
3
C1 0.68uF/MKS
VCC
MU TE
R9 10K
C3 1uF
C6
0.68uF/MKS
C21
1uF
GAINA1
J6 CON2
1
2
C22
1uF
C13 1uF
C5
0.68uF/MKS
R2
10K
L1 33uH
+
C16
220uF
12
+
C17
220uF
12
D2
LED/G
C9 0.68uF/MKS
U1 TPA3122/DI P
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
PVCCL
SD
MUTE
LIN
RIN
BYPASS
AGND1
AGND2
VCLAMP
PVCCR PGNDR
ROUT
BSR
GAIN1
GAIN0
AVCC2
AVCC1
BSL
LOUT
PGNDL
C18
1uF
R5
10K
GAINA1
L2 33uH
VCC
R1 10K
C12 0.68uF/MKS
R6
10K
+
C19
220uF
12
VCC
MU TE
+
C7 220uF/35V
1 2
C15
1uF
J8 OUT1-
1
R3
10K
VCC
J14 CON2
1
2
VCC
VCC
C4 1uF
J1 CON2
1
2
C2 0.68uF/MKS
VCC
SD
VCC
R4
10K
GAINA0
J12 DJ005B
3
2
1
GAINA0
R7
10K
VCC
J4
CH2
1 2
J13 CON2
1
2
D1 1N5822
1 2
J15 CON2
1
2
+
C10 220uF/ 35V
1 2