2*100W@4Ω TK2050
Class-D Audio Amplifier Board
User’s Guide
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Table of Contents
Chapter 1. Overview ..........................................................................................................1
1.1
1.2
1.3
1.4
1.5
Overview .............................................................................................................. 1
Features ............................................................................................................... 2
Applications......................................................................................................... 2
Benefits ................................................................................................................ 3
Quick Start ........................................................................................................... 3
Chapter 2. Hardware Detail ...............................................................................................5
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
Power Connection............................................................................................... 5
Input Connections............................................................................................... 5
Output Connections............................................................................................ 6
DC Offset.............................................................................................................. 7
LED Indicators..................................................................................................... 7
Volume Control.................................................................................................... 8
Temperature Control ........................................................................................... 8
Notes .................................................................................................................... 9
Chapter 3. Electrical Characteristics .............................................................................10
Chapter 4. Mechanical Drawing......................................................................................12
Chapter 5. Appendix ........................................................................................................13
Chapter 6. Contact Us .....................................................................................................16
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page i
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
NOTES:
Product Version
：
Ver 1.0
Document Version
：
Ver 1.0
AA-AB32181_Ver1.0_Page ii
© 2004-2009 Sure Electronics Inc
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 1. Overview
1.1
Overview
Welcome to use this 2*100W Class-D audio amplifier board by Sure Electronics. As an
upgraded version of the original AA-AB013, this board integrates an external extensible
interface to connect the matching product of a volume control board and a rotary encoder
board for volume control. It’s suitable for amplifier enthusiasts or hobbyists to finish a
complete amplifier system.
This amplifier board integrates Tripath’s high performance TC2000 and TP2050 chips
supporting dual channel audio amplification. Powered by any DC voltage from 10V to 32V,
this high efficiency amplifier board is capable of outputting up to 100W per channel. It can
be used to drive 4Ω or 8Ω passive speakers.
TC2000 is a dual channel audio controller produced by Tripath using its patent Digital
Power Processing technology (DPPTM). Combined with switching power output stages
TP2050, it can achieve class-T audio power amplification and 50W continuous average
power per channel, as well as lower THD+N and higher S/N ratio.
For 100W power output, this amplifier board integrates one TC2000 chips and two TP2050
chips so that it supports dual-channel audio amplification of up to 100W each. Resistance
and capacity components of high quality are used to gain the perfect timber, finally realize
high S/N ratio, low THD+N, wide frequency response range etc.
In addition, auto fan control function is utilized so that the cooling fun will self-adjust its
rotating speed when the temperature of chips is too high, ensuring the normal working of
the chips, and will automatically shutdown when the temperature of chips keeps low,
ensuring the fun’s own long service life.
FIGURE 1-1 FRONT VIEW
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 1
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
FIGURE 1-2 ACCESSORIES
Note: The diagrams above are used for reference only.
1.2 Features
y
A perfect "Class D" architecture
y
Wide power supply range: 12V to 30V, maximum 32V
y
Frequency response: 20Hz to 20KHz(±3dB)
y
Signal/Noise Ratio: 100dB(A-Weighted)
y
High Output Power
30W @ 6Ω, < 1% THD+N
40W @ 8Ω, < 3% THD+N
100W @ 4Ω, < 10.0% THD+N
y
High Efficiency
86% @ 60W 8Ω
82% @ 46W 6Ω
90% @ 100W 4Ω
y
Audiophile Quality Sound
0.007% THD+N @ 30W 8Ω
0.005% THD+N @ 70W 4Ω
y
Line level audio signal input
y
Over/under voltage turn off
y
Over current protection
y
Over temperature protection
1.3 Applications
y
Active Subwoofers
y
Home Theater Receiver
y
Multi-channel Distribution
y
Active DVD System
AA-AB32181_Ver1.0_Page 2
© 2004-2009 Sure Electronics Inc
Overview
y
Mini/Micro Systems
y
Mounting holes facilitate installation and fixing
y
Several wiring methods facilitate connection
y
Excellent design of the power ports which allows you to connect multiple amplifier
1.4 Benefits
boards in series.
y
Excellent heat dissipation eliminates the requirement of an extra heat sink
1.5 Quick Start
Suggested connection is shown in figure 1-3.
FIGURE 1-3 CONNECTION SCHEMATIC
Note: Please observe the following steps to complete verification so as to ensure the
products are intact during transit.
1. Open the amplifier package and make sure the product is intact (No missing
or damaged components and no deformation)
2. Please observe the connection schematics when connecting the amplifier
board. Use a nearby sound source, such as MP3 or CD player to have a
trial. This amplifier board can be deemed as qualified if you can hear the
sound corresponding to that sound source.
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 3
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
FIGURE 1-4 CASCADING SCHEMATIC
Note: GND should be grounded or connected to the housing of the device.
AA-AB32181_Ver1.0_Page 4
© 2004-2009 Sure Electronics Inc
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 2. Hardware Detail
2.1 Power Connection
To power the amplifier board, use either jack or terminal blocks. Pay attention to the
polarity when connecting power supply.
FIGURE 2-1 POWER CONNECTION
TABLE 2-1 POWER CONNECTION
Connector Mark
Description
Jack
J5
Terminal
Blocks
J3
J4
DC 10V to 32V power supply
VCC
GND
The positive of DC 10V to 32V power supply
The negative of DC 10V to 32V power supply
Note:
1. You are allowed to use only one way to power the amplifier board at a time.
2. The maximum supply voltage shall not exceed 36V.
2.2 Input Connections
You may use RCA connectors to input audio signal.
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 5
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
FIGURE 2-2 INPUT CONNECTION
TABLE 2-2 INPUT CONNECTION
Connector Mark
J11
RCA connector
J12
Terminal Blocks
J10
Channel Description
Channel 1 Input
Channel 2 Input
Channel 1 Input
GND
Channel 2 Input
Note: You are allowed to feed only one group (dual channel) of audio signal to the
amplifier board at a time.
2.3 Output Connections
You can use either terminal blocks or banana connectors to output audio signal. Two
pairs of banana jacks are provided for free.
FIGURE 2-3 OUTPUT CONNECTION
AA-AB32181_Ver1.0_Page 6
© 2004-2009 Sure Electronics Inc
Hardware Detail
TABLE 2-3 OUTPUT CONNECTION
Connector Mark
Description
Negative Output of Channel 1
J15
Positive Output of Channel 1
J13
Banana Connectors
Negative Output of Channel 2
J18
Positive Output of Channel 2
J16
Terminal blocks*
Note:
1.
2.
3.
J14
Output of Channel 1
J17
Output of Channel 2
Never connect more than one group of speaker to the audio output.
Never connect CH1_OUT- 、CH2_OUT- together since they belong to different
NETs
* Refer to on-board descriptions for connection details.
2.4 DC Offset
If it is not quite necessary, DO NOT trim the output offset by adjusting “R16” and “R35” on
the board since the output offset has been regulated to a range of ±10mV.
Note: Never adjust these potentiometers unless necessary, improper adjustment may
damage your speakers.
2.5 LED Indicators
This amplifier has two power LED indicators which are respectively marked as “Power
(D3)” and “FAULT (D5)”. “Power (D3)” will be illuminated in green when power-up.
“FAULT (D5)” will be illuminated in blue when the board works in SLEEP mode or there’s
error. Please refer to the connection schematic of the board for the LED location and
refer to the manual of TK2050 for details of “FAULT”.
FIGURE 2-4 LED INDICATOR
Note: When power on, the “FAULT (D5)” will twinkle for a short time. However, it doesn’t
affect use.
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 7
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
2.6 Volume Control
The on-board external extensible interface allows for the connection of a rotary encoder
board and a volume control board for volume control. The two boards are not provided
here but as another product (product No.: AA-AA11117) sold on Sure’s webstore. If you
use the two boards, please set K1, K2, K3 and K4 of the on-board DIP switch OFF. Not
using these two boards, you may also adjust the volume by setting the DIP switch.
FIGURE 2-5 VOLUME CONTROL
TABLE 2-8 DIP SWITCH SETTING
Switch
CH1
K1
K2
Function
ON
ON
HIGH
ON
OFF
MEDIUM
OFF
ON
MEDIUM
OFF
OFF
TURN-OFF
Switch
CH2
K3
K4
Function
ON
ON
HIGH
ON
OFF
MEDIUM
OFF
ON
MEDIUM
OFF
OFF
TURN-OFF
Note: Please be aware that audio clippings may occur to some portable players
because of the audio source not the amplifier itself. The sensitivity of this amplifier is
0.775VRMS and the audio signal of the same level should be input.
2.7 Temperature Control
To ensure the amplifier chips can work in a good environment, the amplifier board
integrates one PIC16F690 (U1) and two thermistors (R7, R8). R7 and R8 are used for
real-time detection to the temperature around the driver chips. U1 obtains the
information from the thermistors and accordingly control the fan installed. When the
ambient temperature or the temperature of chips is too high, the fan used will
automatically adjust its rotating speed to reduce the temperature. When the ambient
temperature and the temperature of chips are low, the fan will automatically shutdown to
extend the service life.
AA-AB32181_Ver1.0_Page 8
© 2004-2009 Sure Electronics Inc
Hardware Detail
FIGURE 2-6 U1, R7 AND R8
2.8 Notes
In order to protect amplifier board and extend its service lifetime, please read the
following warnings carefully since warranties will be voided if you do not observe the
following warnings:
Warning 1:
Quality-related issues caused by potentiometers installed by buyers.
Warning 2:
In order to achieve a better sound quality, please use stable power supply since a bad or
unstable power supply may worsen the sound quality or even cripple the amplifier board.
Warning 3:
Never equip a pre-amplifier to the audio input since the amplifier itself has powerful
amplification ability and a high signal input will burn out the amplifier chip.
Warning 4:
In order to protect amplifier and speaker, please turn the volume output to the minimum
when hooking up the amplifier and you may readjust the volume when you are sure that
the amplifier is functioning properly.
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 9
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 3. Electrical Characteristics
Following table lists all typical data. For full specification, please refer to the data sheet of
Tripath’s TK2050 chip.
TABLE 3-1 ELECTRICAL CHARACTERISTICS
Parameter
Condition
Min.
Typ.
Max.
Supply Voltage
-
10V
24V
32V
Shutdown Current*
-
7A
12A
16A
DC12V, no load
-
100mA
-
MUTE=0
-
10mA
40mA
90dB
100dB
(A-weighted)
(A-weighted)
A=0dB
0.720V
0.771V
0.800V
RL=4Ω, Pout=70W
-
0.010%
-
RL=8Ω, Pout=30W
-
0.007%
-
Quiescent Current
Signal/Noise Ratio
Input Sensitivity
THD+N*
Frequency Range
-
-
20Hz to 20KHz（±3dB）
RL=4Ω,
86%
Pout=117W
Efficiency@ VCC=32V
THD+N<0.01%
Output
Power
THD+N<10%
Input Impedance
RL=4Ω, Pout=46W
-
82%
-
RL=8Ω, Pout=60W
-
88%
-
RL=4Ω, f=1000Hz
-
50W
-
RL=8Ω, f=1000Hz
-
35W
-
RL=4Ω, f=1000Hz
-
100W
-
RL=8Ω, f=1000Hz
-
60W
-
-
11K
22K
-
-10mV
0mV
10mV
3.2Ω
-
-
80dB
95dB
-
Offset Voltage
(adjustable)
Minimum Load
Channel Separation*
-
Po=100W,
RL=4ohm
Power Gain*
-
14V/V
16V/V
18V/V
Operating Temperature
-
0℃
20℃
50℃
Storage Temperature
-
-20℃
20℃
105℃
AA-AB32181_Ver1.0_Page 10
© 2004-2009 Sure Electronics Inc.
2*100W@4Ω TK2050 Class-D Audio Amplifier Board
Thermal Warning*
-
-
130℃
-
Thermal Shutdown
-
-
150℃
-
Note: *The chip’s specifications from Tripath’s TK2050 Data Sheet.
© 2004-2009 Sure Electronics Inc.
AA-AB32141_Ver1.0_Page 11
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 4. Mechanical Drawing
FIGURE 4-1 MECHANICAL DRAWING
AA-AB32181_Ver1.0_Page 12
© 2004-2009 Sure Electronics Inc.
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 5. Appendix
FIGURE 5-1 SCHEMATIC 1
+5V
R1
10k
U1 PIC16F690/SSOP
+5V
1
R2
C1
0.1uF/50V
2
MCLR
10k
R4
FAULT1
330R
1
2
3
4
5
6
7
8
9
10
VDD
VSS
RA5/OSC1
RA0/AN0/PGD
RA4/AN3/OSC2RA1/AN1/ref /PGC
RA3/MCLR/Vpp
RA2/AN2
RC5/CCP1
RC0/AN4
RC4
RC1/AN5
RC3/AN7
RC2/AN6
RC6/AN8/SSRB4/AN10/SDI/SDA
RC7/AN9/SDO RB5/AN11/RX/DT
RB7/TX/CK
RB6/SCK/SCL
20
19
18
17
16
15
14
13
12
11
J1
PGD
PGC
PGC
PGD
NTC2
NTC1
HUMTE
PWM
R3
330R
con6
6
5
4
3
2
1
+5V
MCLR
FAULT2
+12V
+5V
+5V
J2
1
2
R6
10K
10K
CON2
3
R5
NTC1
Q1
NTC2
1
PWM
RT/NTC
R8
AX3400 SOT-23
2
R7
RT/NTC
R9
10K
Note: All the schematics in this chapter are used for reference only. There might be a tiny difference in
production batch.
© 2004-2009 Sure Electronics Inc.
AA-AB32181_Ver1.0_Page 13
2*100W @4Ω TK2050 Class-D Audio Amplifier Board
FIGURE 5-2 SCHEMATIC 2
VCC
+5V
U2 LM317EMP/SOT-223
VIN
CON2
+ C3
0.1uF/50V
R11 3K
1
R12
C5
100uF/10V
1K
R10
C7
1K
0.1uF/50V
VIN
VOUT
VOUT
2
4
+12V
+ C6
0.1uF/50V
R13 3K
2
C4
3
VCC
1
0.1uF/50V
J4
U3 LM317EMP/SOT-223
2
4
1
C2
VOUT
VOUT
1
3
R14
C8
100uF/25V
470R
0.1uF/50V
2
D2 SS34/DO-214AB
1
2
2
VADJ
D1 SS34/DO-214AB
1
2
1
1
CON2
VADJ
J3
D3
2
J5
J6
LED/G
DJ005B
1
2
3
CON2
1
1
VCC
VCC
VCC
VCC
1
VCC
1
VCC
1
VCC
1
2
VCC
1
220uF/50V
0R
+ C13
0.22uF/MKP
+ C14
220uF/50V
2
2
220uF/50V
R15
2
220uF/50V
2
C12
+ C11
C16
+ C15
220uF/50V
220uF/50V
0.22uF/MKP
2
+ C10
2
+ C9
CON2
2
J7
1
J8
CON2
2
+5V
1
MUTE
+5V
J9
Vin1
J10 CON3
CH1
1
Vin2
2
1
3
5
7
9
11
2
4
6
8
10
12
Vout1
Vout2
CON12
CH2
3
+5V
U4
1
C18
0.22uf /MKP
C19
1uF/50V
R17 470K
10K/EVM3ESX50B14
Vin1
D4
2
R19
16
R20 10K
17
470K
18
22K
TVS/DO-214AB
REF
19
20
OCD2
OCD1
NC
VLO
Y2
OVRLDB
VHI
GND
Y 2B
Y1
HUMTE
FDBKN1
+5V
C20
0.1uF/50V
TC2000/SOIC
Y 1B
R21 22K
+5V
1
CH1
C17
15
R23
1
J11
R18 8.2K
0.1uF/50V
3
2
CH1
R16
2
21
14
13
12
11
10
9
Y2
Y 2B
Y 1B
HUMTE
Y1
LED/B
D5
8
7
R24
V5
R25
C21
1K
390pF/50V
15K
R22
1K
OUT1A
Resistor and capacitor
must be close to U2
R26 22K
22
SW1
1
2
3
4
Vin1
Vin2
8
7
6
5
Vout1 R27
R29
Vout2 R30
R31
22K
22K
22K
22K
23
VP1
IN1
FDBKP1
R28 15K
6
OUT1B
MUTE
C22
1uF/50V
24
+5V
SW DIP-4
MUTE
R33
+5V
VPWR
10K
C23
1K
390pF/50V
5
R34 15K
4
OUT2A
1
FDBKN2
R32
C24
0.22uf /MKP
CH2
R35
2
Vin2
C26
2
2
1uF/50V
10K/EVM3ESX50B14
D6
3
J12
1
1
CH2
TVS/DO-214AB
R39
22K
R36 470K
25
+5V
26
C27
R38
0.1uF/50V
470K
BBM2
BBM1
DCMP
3
R37
C25
1K
390pF/50V
R40 22K
R41 15K
27
28
VP2
FDBKP2
IN2
BIASCAP
2
OUT2B
1
C28
R42
C29
0.1uF/50V
1K
390pF/50V
Nets of audio signal
must be very short.
AA-AB32181_Ver1.0_Page 14
© 2004-2009 Sure Electronics Inc
Appendix
FIGURE 5-3 SCHEMATIC 3
+5v
U5
29
Y1
23
C30
0.1uF/50V
24
R43
VCC
TP2050/PowerSO36
IN1A
VCC1A
IBIAS
OUT1A1
CONFIG
OUT1A2
15
17
OUT1A
16
C31
10k
1uF/50V
25
GND1A
14
PWRDN
C32
VCC
C33
28
0.1uF/50V
Y1
30
18
Y 1B
31
21
22
33
34
C38
C39
0.1uF/50V
0.1uF/50V
35
36
C40
20
VCC1B
TRISTATE
TH_WAR
32
OUT1B2
GND1B
1
23
C42
0.1uF/50V
24
R46
NC
1
C36
50V
VCC
VCC2A
VDD2
OUT2A1
VSS1
OUT2A2
7
L2
8
2
R45
C37
0.68uF/MKP
VDD1
J14 CON2
NC
J15
OUT-
10uH
9
VSS2
VCCSIGN1
GND2A
6
VCCSIGN2
GNDREG
VCC
VCC2B
OUT2B1
IN2B
4
3
OUT1B
2
C41
GNDCLEAN
GNDSUB
1uF/50V
GND2B
5
VCC
TP2050/PowerSO36
IN1A
VCC1A
IBIAS
OUT1A1
CONFIG
OUT1A2
15
17
OUT2A
16
C43
10k
1uF/50V
25
R47
J13
OUT+
C35
C34
13
IN2A
U6
29
10
NC
+5v
Y2
10uH
0.22uF/MKP
OUT2B2
19
L1
11
0.68uF/MKP
IN1B
0.1uF/50V
Y 1B
OUT1B1
12
1
26
FAULT1
FAULT
1
27
PWRDN
GND1A
14
C44
VCC
0.1uF/50V
27
10K
26
FAULT2
FAULT
TRISTATE
C45
28
0.1uF/50V
VCC1B
OUT1B1
OUT1B2
12
L3
10uH
11
10
C46
TH_WAR
0.68uF/MKP
Y2
30
18
Y 2B
31
21
22
33
34
C50
C51
0.1uF/50V
0.1uF/50V
35
36
C52
20
IN1B
GND1B
VDD2
VSS1
VSS2
19
1
© 2004-2009 Sure Electronics Inc.
1
0.22uF/MKP
2
VCC
VCC2A
OUT2A1
OUT2A2
GND2A
7
L4
10uH
C49
R48
0.68uF/MKP
NC
J17 CON2
J18
OUT-
8
9
6
VCCSIGN1
VCCSIGN2
VCC
GNDREG
VCC2B
32
C48
50V
IN2A
0.1uF/50V
Y 2B
NC
13
NC
VDD1
J16
OUT+
C47
1
10K
0.1uF/50V
1
R44
OUT2B1
IN2B
OUT2B2
4
3
2
GNDCLEAN
GNDSUB
OUT2B
C53
1uF/50V
GND2B
5
AA-AB009_Ver1.0_Page 15
2*100W @4Ω TK2050 CLASS-D
AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 6. Contact Us
Sure Electronics Co., Ltd.
5F, Zone A,
Qinhuai Technology Innovation Center
105-2 DaMing Rd (ZIP:210022)
Nanjing
P.R.China
Tel:
+86-13601408832 (For technical questions only)
+86-25-66606340 (English service, from GMT1-10AM)
Fax:
+86-25- 66606341-866
Website:
www.sure-electronics.com
www.sure-electronics.net
AA-AB32181_Ver1.0_Page 16
© 2004-2009 Sure Electronics Inc.