4*100W @4Ω TK2050
Class-D Audio Amplifier Board
User’s Guide
© 2004-2009 Sure Electronics Inc. AA-AB009_Ver1.0
4*100W @4Ω TK2050 Class-D Audio Amplifier Board
Notice: Please read this manual prior to using the product and follow the steps to keep the product in a good
working status and long life. We assume no liability for any damage caused by users themselves.
Warning: Never expose the product in the rain and other wet locations.
Safety Precautions: Please protect the product well since it is a high-power device. Keep the metal objects
away from the amplifier board to avoid danger. Make sure quality power supply is used, or there may be some
problems.
Caution: Please read carefully the manual and check if the amplifier board is good or not before use the
product. DC 12V power supply and one-hour working time are recommended for the first use. There must be
a certain space for the heat removal since this product is a high-power device which is prevented from
working in an extreme condition for a long time. Never touch the heat sinks for too long time, or your hand will
be scalded.
© 2004-2009 Sure Electronics Inc. AA-AB009_Ver1.0
4*100W @4Ω TK2050
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CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
Table of Contents
Chapter 1. Overview ..........................................................................................................1
1.1 Overview .............................................................................................................. 1
1.2 Features ............................................................................................................... 2
1.3 Applications......................................................................................................... 2
1.4 Benefits ................................................................................................................ 2
1.5 Quick Start ........................................................................................................... 2
Chapter 2. Hardware Detail ...............................................................................................4
2.1 Power Connection............................................................................................... 4
2.2 Input Connections............................................................................................... 4
2.3 Output Connections............................................................................................ 4
2.4 DC Offset.............................................................................................................. 5
2.5 LED Indicators..................................................................................................... 5
2.6 Volume Control.................................................................................................... 6
2.7 Notes .................................................................................................................... 6
Chapter 3. Electrical Characteristics ...............................................................................7
Chapter 4. Mechanical Drawing........................................................................................8
Chapter 5. Appendix..........................................................................................................9
5.1 Schematics 1 ...................................................................................................... 9
5.2 Schematic 2_Jack ............................................................................................. 10
5.3 Schematic 3_Power .......................................................................................... 10
5.4 Schematic 4 _ TC2000 .......................................................................................11
5.5 Schematic 5 _ TP2050....................................................................................... 12
Chapter 6. Contact Us .....................................................................................................13
2004-2009 Sure Electronics Inc.
A-AB009_Ver1.0_Page i
4*100W @4Ω TK2050 Class-D Audio Amplifier Board
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NOTES:
Product Version ： Ver 1.1
Document Version ： Ver 1.0
A-AB009_Ver1.0_Page ii
© 2004-2009 Sure Electronics Inc
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1.1 Overview
4*100W @4Ω TK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 1. Overview
Welcome to use this self-made 4*100W audio amplifier board which is a perfect class-D
architecture integrated TC2000 and TP2050 chips to achieve the single-channel 100W
power output. With high efficiency, it especially is available for the outdoor venues where
power supply is always in consideration. Moreover, integrated with TC2000 and TP2050
chips of Tripath, this board also supports four-channel amplification and can be powered
by any DC power supply ranging from 10 to 32V, which can be used to drive any 4Ω or
8Ω passive speakers.
TC2000 is a dual channel audio controller produced by Tripath using its patent Digital
TM
Power Processing technology (DPP
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 two TC2000 chips and four
TP2050 chips so that it supports four-channel audio amplification of up to 100W each.
Resistance 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.
FIGURE 1-1 PRODUCT DIAGRAM
). Combined with switching power output stages
.
Note: This diagram above is used for reference only.
© 2004-2009 Sure Electronics Inc.
A-AB009_Ver1.0_Page 1
4*100W @4Ω TK2050 Class-D Audio Amplifier Board
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1.2 Features
Operating voltage range: 10V—30V, the maximum voltage of power supply is 32V
Frequency response: 20Hz—20KHz(±3dB)
Signal/Noise Ratio：100dB (A-Weighted)
High Output Power
30W @ 6Ω, < 1% THD+N
40W @ 8Ω, < 3% THD+N
100W @ 4Ω, < 10.0% THD+N
High Efficiency
86% @ 60W 8Ω
82% @ 46W 6Ω
90% @ 100W 4Ω
Audiophile Quality Sound
0.007% THD+N @ 30W 8Ω
0.005% THD+N @ 70W 4Ω
Line level analogue audio input
Over/under voltage turn off
Over current protection
Over temperature protection
1.3 Applications
Active Subwoofers
Home Theater Receiver
Multi-channel Distribution
Active DVD System
Mini/Micro Systems
1.4 Benefits
Mounting holes are available for easy installation and fix.
Several wiring methods facilitate connection.
The design of power supply allows you to connect more amplifier board.
Excellent heat sink eliminates your worry over heat dissipation.
1.5 Quick Start
Suggested connection is shown in figure 1-2.
A-AB009_Ver1.0_Page 2
© 2004-2009 Sure Electronics Inc
FIGURE 1-2 CONNECTION SCHEMATIC
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Overview
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 diagram 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.
A-AB009_Ver1.0_Page 3
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2.1 Power Connection
To power the amplifier board, use jack or terminal blocks. Pay more attention to the
positive and negative of the power supply when wiring.
TABLE 2-1 POWER CONNECTION
Connector Mark Description
Jack J15 DC 10-30V power supply
4*100W @4Ω TK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 2. Hardware Detail
Terminal
Blocks
Note:
1. You are allowed to use only one way to power the amplifier board at a time.
2. The maximum voltage of power supply shall not exceed 32V.
2.2 Input Connections
You may use RCA connectors to input audio signal.
TABLE 2-2 INPUT CONNECTION
Connector Mark Channel
RCA connector
Terminal Blocks
Note: Never input the audio signals through RCA connectors and terminal blocks at a
time.
2.3 Output Connections
You can use either terminal blocks or banana connectors to output audio signal. Two
pairs of banana connectors are provided for free.
TABLE 2-3 OUTPUT CONNECTION
Connector Mark Description
Banana Connectors
Terminal blocks
J13 VCC The positive of DC 10-30V power supply
J14 GND The negative of DC 10-30V power supply
J18 Channel 1 Input
J19 Channel 2 Input
J20 Channel 3 Input
J21 Channel 4 Input
J16
J17
J4 Negative Output of Channel 1
J5 Positive Output of Channel 1
J6 Negative Output of Channel 2
J7 Positive Output of Channel 2
J8 Negative Output of Channel 3
J9 Positive Output of Channel 3
J10 Negative Output of Channel 4
J12 Positive Output of Channel 4
J1 Output of Channel 1
J2 Output of Channel 2
J3 Output of Channel 3
Channel 1 Input
Channel 2 Input
Channel 3 Input
Channel 4 Input
A-AB009_Ver1.0_Page 4
© 2004-2009 Sure Electronics Inc.
4*100W @4Ω TK2050 Class-D Audio Amplifier Board
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J11 Output of Channel 4
Note:
1. Please refer to the instruction of circuit board connection for details.
2. Never connect more than one group of speakers to the audio output.
3. Never connect CH1_OUT- 、CH2_OUT-、CH3_OUT- and CH4_OUT- together
since they belong to different NETs.
2.4 DC Offset
If it is not quite necessary, DO NOT trim the output offset by adjusting “R13”, “R28”, “R41”
and “R56” on the board since the output offset has been regulated to a range of ±10mV.
Note: Never adjust these potentiometer unless necessary, improper adjustment may
damage your speakers.
2.5 LED Indicators
The amplifier has three LED indicators, one of which is marked as “Power（D1）”, the other
two as “Hmute（D2）” and “Hmute (D3)”. “Power（D1）” will be illuminated in green on
power-up and “Hmute（D2、D3）” will be illuminated in blue when the board is in a mute
mode or error occurs. Please refer to TK2050 Data Sheet for a detailed description of
HMUTE and the Board Connection Diagram for the LED location on the amplifier board.
© 2004-2009 Sure Electronics Inc.
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2.6 Volume Control
No potentiometer is provided for manually adjusting the volume. The volume control of
sound source like MP3 or PC can be used to adjust the volume of the audio output or a
50KΩ potentiometer can be installed by users themselves, but it may cause signal
attenuation.
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.
Note: Never adjust these potentiometer unless necessary, it may damage your
speakers.
2.7 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.
Hardware Detail
A-AB009_Ver1.0_Page 6
© 2004-2009 Sure Electronics Inc
4*100W @4Ω TK2050
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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 Tripath
data sheet of TK2050 chip.
Parameter
Supply Voltage 10V 24V 30V
Min. Typ. Max.
Over-current
Shutdown*
Signal/Noise Ratio 90dB(A-Weighted) 100dB(A-Weighted) -
THD+N - 0.010% THD+N @ 70W 4Ω
Frequency
Response
Input Sensitivity 0.720V 0.771V 0.800V
Channel
Separation*
Efficiency*
(Vcc=32V)
Output power 4
ohm*@30V rail
Output power 8
ohm*@30V rail
Offset Voltage
(adjustable)
Input Impedance 20K ohms 22K ohm -
7A 12A 16A
-
0.007% THD+N @ 30W 8Ω
80dB 95dB -
- 86% @ 117W 4Ω
- 50W <0.01THD+N
- 35W<0.01THD+N
-10mV 0mV 10mV
20HZ—20KHz（±3dB）
82% @ 46W 6Ω
88% @ 60W 8Ω
100W<10% THD+N
60W<10% THD+N
-
-
-
-
Minimum Load 3.2 ohm - -
Power Stage Gain 14V/V 16V/V 18V/V
Thermal Warning* - 130ºC -
Thermal Shutdown* - 150ºC -
Note: *The chip specifications from Tripath Data Sheet of TK2050 chip. Some has
been regulated according to the actual situation.
© 2004-2009 Sure Electronics Inc.
A-AB009_Ver1.0_Page 7
CLASS-D AUDIO AMPLIFIER BOARD
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Chapter 4. Mechanical Drawing
FIGURE 4-1 MECHANICAL DRAWING
4*100W @4Ω TK2050
USER’S GUIDE
Symbol L L1 L2 W W1 W2
Inch
mm
A-AB009_Ver1.0_Page 8
5.70 3.15 2.73 5.70 3.20 3.66
144.78 80.01 69.34 144.78 81.28 92.96
© 2004-2009 Sure Electronics Inc.
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5.1 Schematics 1
R18
1K
J18
1 2
CH1
J19
1 2
CH2
J16
CON3
J20
1 2
CH3
J21
1 2
CH4
J17
CON3
R19
1K
321
321
VCC
C25
0.68uF/J
C26
0.68uF/J
C27
0.68uF/J
C28
0.68uF/J
4*100W @4Ω TK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
Chapter 5. Appendix
C23
1uF/D
C24
1uF/D
VCC
R10
1K
R11
1K
C27
1uF/D
C28
1uF/D
R5
R14
1k
R15
1k
C29
1uF/D
C30
1uF/D
22k
DGND2
VCC
U1
1
VDD1
DGND1
2
VDD1
3
N/C
4
DGND1
5
DGND1
6
CH1_IN
7
GND
8
CH2_IN
9
GND
10
MUTE
11
SLEEP
12
GND
13
CH3_IN
14
GND
15
CH4_IN
16
GND
17
PPWM
18
DGND2
19
DGND2
20
N/C
21
VDD2
22
VDD2
SDA-704
HC1_OUT-
HC1_OUT-
DGND1
HC1_OUT+
HC1_OUT+
DGND1
CH2_OUT-
HC2_OUT-
DGND1
HC2_OUT+
HC2_OUT+
HC3_OUT-
HC3_OUT-
DGND2
HC3_OUT+
HC3_OUT+
DGND2
HC4_OUT-
HC4_OUT-
DGND2
HC4_OUT+
CH4_OUT+
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
C5 0. 68uF/J
DGND1
L7 10uH
12
L8 10uH
12
C6 0. 68uF/J
C7 0. 68uF/J
L1 10uH
12
L2 10uH
12
C8
0.68uF/J
C9 0. 68uF/J
L3 10uH
12
L4 10uH
12
C10 0.68uF/J
C11 0.68uF/J
L5 10uH
12
L6 10uH
12
C12 0.68uF/J
DGND2
R1
10R
C1
0.22uF/D
R2
10R
C2
0.22uF/D
R3
10R
C3
0.22uF/D
R4
10R
C4
0.22uF/D
J11
2
1
CON2
J4
1
CON1
J5
1
CON1
J6
1
CON1
J2
2
1
CON2
J7
1
CON1
J8
1
CON1
J3
2
1
CON2
J9
1
CON1
J10
1
CON1
J12
1
CON1
J1
2
1
CON2
C21
0.22uF/J
VCC
C22
0.22uF/J
DGND2
1
+
2
C18
1000uF/35V
1
+
2
C19
1000uF/35V
J13 CON3
1
2
3
J14 CON3
1
2
3
J15 DJ005B
C17
0.22uF/J
VCC
1
+
2
C13
1000uF/35V
DGND1
12
+
C14
1000uF/35V
C20
1uF/D
D1 MBR1660
2
1
2
3
1
pin2
pin1
case
3
C15
1uF/D
C16
0.22uF/J
2004-2009 Sure Electronics Inc.
A-AB009_Ver1.0_Page 9
4*100W @4Ω TK2050 Class-D Audio Amplifier Board
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5.2 Schematic 2_Jack
5.3 Schematic 3_Power
A-AB009_Ver1.0_Page 10
© 2004-2009 Sure Electronics Inc
5.4 Schematic 4 _ TC2000
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Appendix
© 2004-2009 Sure Electronics Inc.
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4*100W @4Ω TK2050 Class-D Audio Amplifier Board
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5.5 Schematic 5 _ TP2050
Note: The above schematics are used for reference only. There might be a tiny difference in production
batch.
A-AB009_Ver1.0_Page 12
© 2004-2009 Sure Electronics Inc
4*100W @4Ω TK2050
A
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
© 2004-2009 Sure Electronics Inc.
A-AB009_Ver1.0_Page 13
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