Sure Electronics TK2050 User manual

4*100W @4ΩTK2050
Class-D Audio Amplifier Board
User’s Guide
©2004-2009 Sure Electronics Inc. AA-AB009_Ver1.0

4*100W @4ΩTK2050 Class-D Audio Amplifier Board
©2004-2009 Sure Electronics Inc. AA-AB009_Ver1.0
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.

4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
2004-2009 Sure Electronics Inc.
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A-AB009_Ver1.0_Page i
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

4*100W @4ΩTK2050 Class-D Audio Amplifier Board
©2004-2009 Sure Electronics Inc
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A-AB009_Ver1.0_Page ii
NOTES:
Product Version ：Ver 1.1
Document Version ：Ver 1.0

4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©2004-2009 Sure Electronics Inc.
Chapter 1. Overview
1.1 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 4Ωor
8Ωpassive 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 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
Note: This diagram above is used for reference only.
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4*100W @4ΩTK2050 Class-D Audio Amplifier Board
©2004-2009 Sure Electronics Inc
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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.

Overview
FIGURE 1-2 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 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.
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4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©2004-2009 Sure Electronics Inc.
Chapter 2. Hardware Detail
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
J13 VCC The positive of DC 10-30V power supply
Terminal
Blocks J14 GND The negative of DC 10-30V power supply
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
J18 Channel 1 Input
J19 Channel 2 Input
J20 Channel 3 Input
RCA connector
J21 Channel 4 Input
Channel 1 Input
J16 Channel 2 Input
Channel 3 Input
Terminal Blocks
J17 Channel 4 Input
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
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
Banana Connectors
J12 Positive Output of Channel 4
J1 Output of Channel 1
J2 Output of Channel 2
Terminal blocks
J3 Output of Channel 3
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4*100W @4ΩTK2050 Class-D Audio Amplifier Board
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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Hardware Detail
©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
50KΩpotentiometer 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.

4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©2004-2009 Sure Electronics Inc.
Following table lists all typical data. For full specification, please refer to the Tripath
data sheet of TK2050 chip.
Parameter
Chapter 3. Electrical Characteristics
Min. Typ. Max.
Supply Voltage 10V 24V 30V
Over-current
Shutdown*
7A 12A 16A
Signal/Noise Ratio 90dB(A-Weighted) 100dB(A-Weighted) -
THD+N - 0.010% THD+N @ 70W 4Ω
0.007% THD+N @ 30W 8Ω
-
Frequency
Response
20HZ—20KHz（±3dB）-
Input Sensitivity 0.720V 0.771V 0.800V
Channel
Separation*
80dB 95dB -
Efficiency*
(Vcc=32V)
- 86% @ 117W 4Ω
82% @ 46W 6Ω
88% @ 60W 8Ω
-
Output power 4
ohm*@30V rail
- 50W <0.01THD+N
100W<10% THD+N
-
Output power 8
ohm*@30V rail
- 35W<0.01THD+N
60W<10% THD+N
-
Offset Voltage
(adjustable)
-10mV 0mV 10mV
Input Impedance 20K ohms 22K ohm -
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.
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4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©2004-2009 Sure Electronics Inc.
Chapter 4. Mechanical Drawing
FIGURE 4-1 MECHANICAL DRAWING
Symbol L L1 L2 W W1 W2
Inch 5.70 3.15 2.73 5.70 3.20 3.66
mm 144.78 80.01 69.34 144.78 81.28 92.96
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4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
2004-2009 Sure Electronics Inc.
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5.1 Schematics 1
R18
1K
J13 CON3
1
2
3
DGND1
C1
0.22uF/D
DGND2
U1
SDA-704
24
23
25
27
28
26
29
30
31
32
33
34
35
36
37
38
39
40
22
21
20
19
18
17
16
14
15
13
12
11
10
9
8
7
6
5
4
3
2
1
41
42
43
44
HC4_OUT+
CH4_OUT+
DGND2
HC4_OUT-
DGND2
HC4_OUT-
HC3_OUT+
HC3_OUT+
DGND2
HC3_OUT-
HC3_OUT-
HC2_OUT+
HC2_OUT+
DGND1
HC2_OUT-
CH2_OUT-
DGND1
HC1_OUT+
VDD2
VDD2
N/C
DGND2
DGND2
PPWM
GND
GND
CH4_IN
CH3_IN
GND
SLEEP
MUTE
GND
CH2_IN
GND
CH1_IN
DGND1
DGND1
N/C
VDD1
VDD1
HC1_OUT+
DGND1
HC1_OUT-
HC1_OUT-
VCC
DGND1
R15
1k
DGND2
R3
10R
R1
10R
C25
0.68uF/J
C24
1uF/D
R10
1K
C27
0.68uF/J
C3
0.22uF/D
VCC
R5
22k
J5
CON1
1
VCC
C8 0.68uF/ J
J9
CON1
1
R2
10R
VCC
R11
1K
C20
1uF/D
J16
CON3
3 2 1
J15 DJ005B
3
2
1
J14 CON3
1
2
3
DGND1
L3 10uH
12
C2
0.22uF/D
VCC
R14
1k
L4 10uH
12
L6 10uH
12
J3
CON2
2
1
C9 0.68uF/ J
+
C18
1000uF/35V
1
2
J17
CON3
3 2 1
J10
CON1
1
J19
CH2
1 2
C7 0.68uF/ J
C28
1uF/D
C27
1uF/D
C28
0.68uF/J
C21
0.22uF/J
C17
0.22uF/J
C29
1uF/D
+
C14
1000uF/35V
12
C23
1uF/D
C11 0.68uF/J
J4
CON1
1
J2
CON2
2
1
+
C13
1000uF/35V
1
2
J8
CON1
1
J7
CON1
1
J1
CON2
2
1
C15
1uF/D
+
C19
1000uF/35V
1
2
L1 10uH
12
L7 10uH
12
C30
1uF/D
J12
CON1
1
L2 10uH
12
C4
0.22uF/D
J11
CON2
2
1
J21
CH4
1 2
C12 0.68uF/J
J18
CH1
1 2
C6 0.68uF/ J
J6
CON1
1
C10 0.68uF/J
L5 10uH
12
J20
CH3
1 2
R19
1K
D1 MBR1660
2
3
1
pin2
case
pin1
DGND2
C26
0.68uF/J
L8 10uH
12
C5 0.68uF/ J
C16
0.22uF/J
R4
10R
C22
0.22uF/J
Chapter 5. Appendix

4*100W @4ΩTK2050 Class-D Audio Amplifier Board
5.2 Schematic 2_Jack
5.3 Schematic 3_Power
©2004-2009 Sure Electronics Inc
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Appendix
5.4 Schematic 4 _ TC2000
©2004-2009 Sure Electronics Inc.
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4*100W @4ΩTK2050 Class-D Audio Amplifier Board
5.5 Schematic 5 _ TP2050
Note: The above schematics are used for reference only. There might be a tiny difference in production
batch.
©2004-2009 Sure Electronics Inc
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4*100W @4ΩTK2050
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©2004-2009 Sure Electronics Inc.
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: [phone] (For technical questions only)
[phone] (English service, from GMT1-10AM)
Fax: [phone]
Website: www.sure-electronics.com
www.sure-electronics.net
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