Sure Electronics TK2050 Manuel utilisateur

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.

A-AB013_Ver1.2_Page i

Chapter1.Overview ......................................................................................................................... 1

1.1 Welcome......................................................................................................................... 1

1.2 Quick Start...................................................................................................................... 3

Chapter2.Hardware Detail .............................................................................................................. 5

2.1 Power Connection ......................................................................................................... 5

2.2 Input Connections......................................................................................................... 5

2.3 Output Connections ...................................................................................................... 5

2.4 Connection with Next Board......................................................................................... 6

2.5 Mute Setting ................................................................................................................... 6

2.6 Gain Settings.................................................................................................................. 6

2.7 DC Offset......................................................................................................................... 6

2.8 LED Indicators ............................................................................................................... 7

2.9 Volume Control............................................................................................................... 7

Chapter3.Electrical Characteristics .............................................................................................. 8

Chapter4.Mechanical Drawing....................................................................................................... 9

Chapter5.Appendix....................................................................................................................... 10

Schematics ............................................................................................................................. 10

Chapter6.Contact Us..................................................................................................................... 12

Table of Contents

2*100 watt @4ohm TK2050 Class-D Audio Amplifier Board

A-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

A-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 4Ωor 8Ωpassive 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

A-AB013_Ver1.2_Page 2

Features:

yFully bridged stereo output, the output of this product cannot be bridged again.

yMaximum voltage of power supply is 36V

yLine level analogue audio input

ySensitivity and gain are adjustable with on-board DIP switch

y+5V screw terminal for mute

yOver / under voltage turn off

yOver current protection

yOver temperature protection

Applications

yPowered Subwoofers

yHome Theater Receivers

yMulti-channel Distribution

yPowered DVD Systems

yMini/Micro Systems

Benefits

yMounting holes are available for easy installation and fix

ySeveral wiring methods facilitate connection

yThe design of power supply allows you to connect more amplifier boards.

yExcellent heat sink eliminates your worry over heat dissipation.

Overview and Main Feature

A-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

A-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

A-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 1Terminal 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

A-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:

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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

A-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.

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