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© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2
2*100 watt @ 4ohm TK2050 Class-D Audio Amplifier Board
User’s Guide
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page i
Chapter1.Overview ......................................................................................................................... 1
1.1 Welcome ......................................................................................................................... 11.2 Quick Start ...................................................................................................................... 3
Chapter2.Hardware Detail .............................................................................................................. 52.1 Power Connection ......................................................................................................... 52.2 Input Connections ......................................................................................................... 52.3 Output Connections ...................................................................................................... 52.4 Connection with Next Board......................................................................................... 62.5 Mute Setting ................................................................................................................... 62.6 Gain Settings.................................................................................................................. 62.7 DC Offset......................................................................................................................... 62.8 LED Indicators ............................................................................................................... 72.9 Volume Control............................................................................................................... 7
Chapter3.Electrical Characteristics .............................................................................................. 8Chapter4.Mechanical Drawing....................................................................................................... 9Chapter5.Appendix ....................................................................................................................... 10
Schematics ............................................................................................................................. 10Chapter6.Contact Us..................................................................................................................... 12
Table of Contents
2*100 watt @4ohm TK2050 Class-D Audio Amplifier Board
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page ii
NOTES: Product Version : Ver 1.0 Document Version : Ver 1.2
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 1
1.1 Welcome
This self-made 2*100W audio amplifier board is a perfect class-D architecture integrated with Tripath TC2000 and TP2050. It supports dual channel amplification and can readily be powered by any DC power supply ranging from +10 to 36V. You can use it to drive any 4Ω or 8Ω passive speakers.
As quoted from the datasheet of Tripath, TC2000 is a two-channel audio controller that uses Tripath’s proprietary Digital Power Processing (DPPTM) technology. When combined with switching power output stages, the TC2000 allows the implementation of a complete Class-T audio amplifier. TP2050 is a stereo power stage capable of 50W continuous average power per channel, Class-T Digital Audio Power Amplifier using Tripath’s proprietary Digital Power ProcessingTM technology. The TP2050 can be coupled with a Class-T controller such as TC2000 or TC2001 to produce a high-quality stereo amplifier. To put it simple, TC2000 converts analogue audio signal it receives into digital signal and TP2050 amplifies the digital signal from TC2000. This amplifier board integrates two TP2050 chips to support dual channel amplification of up to 100W each. The absolute maximum voltage of TP2050 chip is rated at 40V, so 36V is the very maximum recommended rail voltage. The maximum voltage of TC2000 shall not exceed 5V.
Figure 1 Product Diagram
Notice: The diagram above is used for reference only.
Chapter1.Overview
Overview
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 2
Features: Fully bridged stereo output, the output of this product cannot be bridged again. Maximum voltage of power supply is 36V Line level analogue audio input Sensitivity and gain are adjustable with on-board DIP switch +5V screw terminal for mute Over / under voltage turn off Over current protection Over temperature protection
Applications Powered Subwoofers Home Theater Receivers Multi-channel Distribution Powered DVD Systems Mini/Micro Systems
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 boards. Excellent heat sink eliminates your worry over heat dissipation.
Overview and Main Feature
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 3
1.2 Quick Start Suggested connection is shown in Figure 2.
Figure 2 Connection Schematic Notice: 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 correspond to that sound source.
Overview
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 4
Figure 3 Cascade Schematic
Notes: 1. GND should be connected to ground or the housing of your instrument. 2. Never connect “OUT1-” and “OUT2-“since they are not in the same net.
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 5
2.1 Power Connection
To power the amplifier board, use either jack or terminal blocks. On-board diodes can prevent the consequence of wrong connection of power supply.
Connector Mark Description
Jack J3 DC 10-36V Power Supply
J1 VCC Positive (+) of DC 10-36V Power Supply Terminal Blocks J5 GND Negative (GND) of DC 10-36V Power Supply
Warning: You are allowed to use only one way for powering the amplifier board at a time. The maximum voltage of power supply shall not exceed 36V. 2.2 Input Connections
You may use either RCA connectors or terminal blocks to input audio signal.
Connector Mark Channel J7 Channel 1 Input RCA Connectors J9 Channel 2 Input J8(PIN1) Channel 1 Input Terminal Blocks J8(PIN3) Channel 2 Input
Warning: You are allowed to feed only one group (dual channel) of audio signal to the amplifier board at a time. Please refer to 2.6 “Gain Setting” for details. 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.
Connector Mark Description J10 Positive output of Channel 1 J12 Negative output of Channel 1 J15 Positive output of Channel 2 Banana Connectors
J13 Negative output of Channel 2 J11 Output of Channel 1 Terminal Blocks
Refer to on-board descriptions for connection details
J14 Output of Channel 2
Warning: Never connect more than one group of speaker to the audio output.
Chapter2.Hardware Detail
Hardware Detail
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 6
2.4 Connection with Next board J4 and J2 on terminal block are used to connect more amplifier board.
Connector Mark Description J4 VDD Positive (+) of DC 10-36V Power Supply to next board J2 GND Negative (GND) of DC 10-36V Power Supply to next board
Notice: It is allowed to connect more amplifier boards in series, but it would be better to limit that number to 4. Remember to use AWG12-compliant cable or equivalent for series connection.
2.5 Mute Setting To mute the output audio signal, connect “+5V” and “MUTE” of the terminal block with a piece of
lead. In normal use, “MUTE” shall be left unconnected.
Connector Mark Description
J6 MUTE
When “MUTE” is connected with “+5V”, both amplifiers will be muted and enter into idle mode. When connected to ground or left disconnected, both amplifiers will resume to regular operation.
Notice: When you select power supply for the board, the appropriate voltage is DC 10-36V. Never connect "MUTE" on the terminal block to any power supply or any other voltage higher than 5V.
2.6 Gain Settings The on-board 4-slide DIP switch, which is marked as “SW1”, is used to set the gain of amplifier
board. 4 slides are marked as K1, K2, K3 and K4 respectively. K1 and K2 are used to set the gain of channel 1 while K3 and K4 are used for channel 2. The following table lists the gain values on different settings:
niaG reifilpmA gnitteS 2 lennahC gnitteS 1 lennahC
K1 K2 K3 K4 Gain Level
Power Gain (dB) Typical
Voltage Gain (V/V) Typical
ON ON ON ON High 24 16 OFF ON OFF ON Medium 30 32 ON OFF ON OFF Medium 30 32 OFF OFF OFF OFF Low 34 48
Tips: High: Portable MP3/CD player with built-in volume control. Medium: General-purpose use Low: Preamplifier with fairly high output signal
2.7 DC Offset If it is not quite necessary, DO NOT trim the output offset by adjusting “R5” and”R26”-two
Hardware Detail
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 7
potentiometers on board since we have already regulated that offset to a range of +/- 10mV. You may refer to the connection diagram for the location of potentiometers.
Warning: Adjusting these potentiometers may damage your speakers.
2.8 LED Indicators
This amplifier board has two indicators, one of which is marked as “Power (D3)”; another is “Hmute (D4)”. The power indicator will be illuminated in green on power-up and “Hmute” will be illuminated in blue when you mute the amplifier audio output or amplifier board error occurs. Please refer to the TK2050 Data Sheet for a complete description of HMUTE. Please refer to the Board Connection Diagram for the LED locations on amplifier board.
2.9 Volume Control
This amplifier board doesn’t include any potentiometer which could be used to manually adjust the volume control. Users may use the volume control of the sound source (such as MP3 player or PC) to adjust the loudness of the audio output. If you need a potentiometer, you may install one (50Kohm) by yourself, but it may void the warranty at the same time. Another reason for not installing potentiometer is the signal attenuation it may occur after installation. To compensate that attenuation, adjusting the gain value is required. You may refer to 2.6 Gain setting for details. Please be aware that audio clippings (waveform distortion) may occur for some portable players, these are the clippings generated by the audio source, not the amplifier itself; please increase the input gain of amplifier board.
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 8
The following table lists all typical data. For full specifications, please refer to the Tripath data sheet
of TK2050 chip. Min Typical Max Supply voltage 10V 24V 36V Over-current shutdown
7A 12A 16A
Signal/Noise Ratio 80dBA THD+N Not tested Channel separation 95dB Efficiency 85%-90% Output power 4 ohm*@30V rail
75W<0.01THD+N, 115W 10% THD+N
Output power 8 ohm*@30V rail
35W<0.01THD+N, 60W 10% THD+N
Offset voltage Adjustable below 100mV
Output noise 135mV Input impedance Nominally 22 to 47 K Power stage gain Set by dip switch Thermal warning* 130ºC Thermal shutdown* 150ºC Notice: *The chip specifications by Tripath.
Chapter3.Electrical Characteristics
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 9
Figure 4
Symbol L L1 W W1 Inch 4.80 4.40 4.00 3.60 mm 121.92 111.76 101.60 91.44
Chapter4.Mechanical Drawing
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 10
Schematics
+ C4
100uF/10V
12
VCC
+ C11
220uF/50V
12
J6 CON2
2
1
+5V
R3 1K
J1 CON2
1
2
R1
1K
+ C13
220uF/50V
12
VCC
D3
LED/G
VCC
D2 SS34/DO-214AB1 2
U1 LM317EMP/SOT-223
3
1
24VIN
VAD
J VOUTVOUT
VCC
C14
0.22uF//MKP
+ C8
220uF/50V
12
VCC
22uF/33uF
+ C12
220uF/50V
12
+5V
MUTE
VCC
J4 CON2
2
1
+ C3
47uF/50V
12
+ C9
220uF/50V
12
D1 SS34/DO-214AB1 2
J3 DJ005B
321
R2 3K
R4 0R
C6
0.1uF/50V
+ C7
220uF/50V
12
C2
0.1uF/50V
C1
0.1uF/50V
J5 CON2
2
1
C10
0.22uF//MKP
J2 CON2
1
2
VCC
C5
0.1uF/50V
VCC VCC
C24 0.22uf /MKP
C27
390pF/50V
R23 10K C21
390pF/50V
R13 15K
OUT2B
MUTEGain2A
Y1B
R16 22K
R19 22K
Gain2B
Gain1B
C20 1uF/50V
R32 22K
CH2
R33
1K
D4 LED/B
R14
22K
R9 10K
U2 TC2000/SOIC
1
2
3
4
5
6
28
27
26
24
25
23
22
21
20
19
18
17
16
15
9
14
13
12
7
8
10
11
BIASCAP
FDBKP2
DCMP
FDBKN2
VPWR
FDBKP1
IN2
VP2
BBM1
MUTE
BBM2
IN1
VP1
V5
GND
VHI
OVRLDB
VLO
OCD1
REF
Y1
OCD2
NC
Y2
FDBKN1
HUMTE
Y1B
Y2B
R15
1K
CH1
+5VR24
10K
C23
0.1uF/50V
J9
CH2
12
+5V
C19
390pF/50V
C25 1uF/50V
C180.1uF/50V
R29
470K
Y2
Gain1A
OUT1AJ7
CH1
12
R18 22KSW1
SW DIP-4
1234
8765
CH2
Gain1B
C15
0.1uF/50V
R25 15K
R22
1K
R30 22K
J8 CON3
1
2
3
+5V
R21 22KGain2B
C16 0.22uf /MKP Y1
R26
10K/EVM3ESX50B14
13
2
C17 1uF/50VR12 1K
R10 22K
+5V
R11 22K
CH1
C26
0.1uF/50V
Y2B
+5V
R8
470K
R5
10K/EVM3ESX50B14
13
2
R34
22K
R6 470K
R20 22K
OUT2A
+5V
R7 8.2K
Gain2A
Gain1A OUT1B
R17 15K
R27 470KR28
1K
R31 15K
C22
390pF/50V
Chapter5.Appendix
Appendix
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_page 11
J12OUT-
1
C38
0.1uF/50V
VCC
OUT1B
Y2B
C35
0.22uF/MKP
+5V
R42
10k
Y1B C36
0.47uF/MKP
R48
47R
R47
47R
L3 10uH
R40
47R
+5V
C54
0.1uF/50V
R37
10K
Y2
C51
6.8uF/50V
Y1
L1 10uH
C31
0.1uF/50V
Y2
Y1B
C39
0.1uF/50V
C41
6.8uF/50V
R38
47R
C45
0.1uF/50V
C33
0.47uF/MKP
VCC
L2 10uH
C44
0.1uF/50VR43
10K
C49
0.22uF/MKP
1206
OUT1A
C52
0.1uF/50V
R39
47R
Y2B
R41
47R
J11 CON22
1
L4 10uH
R44
10K
C30
0.1uF/50V
+5v
C42
0.1uF/50V
R35
10k
TP2050/PowerSO36
VCC
C48
0.47uF/MKP
C46
6.8uF/50V
+5v
VCC
OUT2B
C43
6.8uF/50V
50V
VCC
R46
47R
J13OUT+
1
C34
0.47uF/MKP
C55
6.8uF/50V
C29
6.8uF/50V
C50
0.47uF/MKPJ15OUT-
1
TP2050/PowerSO36
J14 CON22
1
U3
23
29
24
27
26
25
28
30
18
31
21
22
33
34
35
36
20
32
15
17
16
14
12
11
10
7
13
8
9
6
4
3
2
5
19
1
IBIAS
IN1A
CONFIG
FAULT
TRISTATE
PWRDN
TH_WAR
IN1B
NC
IN2A
VDD1
VDD2
VSS1
VSS2
VCCSIGN1
VCCSIGN2
GNDREG
IN2B
VCC1A
OUT1A1
OUT1A2
GND1A
VCC1B
OUT1B1
OUT1B2
VCC2A
GND1B
OUT2A1
OUT2A2
GND2A
VCC2B
OUT2B1
OUT2B2
GND2B
GNDCLEAN
GNDSUB
R36
10K
OUT2A
C32
6.8uF/50V
50V
VCC
Y1
U4
23
29
24
27
26
25
28
30
18
31
21
22
33
34
35
36
20
32
15
17
16
14
12
11
10
7
13
8
9
6
4
3
2
5
19
1
IBIAS
IN1A
CONFIG
FAULT
TRISTATE
PWRDN
TH_WAR
IN1B
NC
IN2A
VDD1
VDD2
VSS1
VSS2
VCCSIGN1
VCCSIGN2
GNDREG
IN2B
VCC1A
OUT1A1
OUT1A2
GND1A
VCC1B
OUT1B1
OUT1B2
VCC2A
GND1B
OUT2A1
OUT2A2
GND2A
VCC2B
OUT2B1
OUT2B2
GND2B
GNDCLEAN
GNDSUB
R45
47R
C37
6.8uF/50V
VCC
J10OUT+
1
C47
0.47uF/MKP
C28
0.1uF/50V
C53
0.1uF/50V
VCC
1206
C40
0.1uF/50V
Figure 5 Schematics
Notice: The above schematics are used for reference only. There might be a tiny difference in production batch.
2*100 WATT@4OHM TK2050 CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
© 2004-2009 Sure Electronics Inc. AA-AB013_Ver1.2_Page 12
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
Chapter6.Contact Us