Texas Instruments TAS5102EVM Manual de usuario

TAS5102EVM and TAS5103EVM for theTAS5102 and TAS5103 Digital Amplifier PowerOutput Stages

User's Guide

Literature Number: SLLU106August 2008

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Contents

1 Related Documentation from Texas Instruments ...................................................................... 51.1 Additional Documentation ................................................................................................ 52 Overview ............................................................................................................................. 52.1 TAS5102EVM and TAS5103EVM Features ........................................................................... 62.2 PCB Key Map.............................................................................................................. 63 Quick-Setup Guide ............................................................................................................... 73.1 Electrostatic Discharge Warning ........................................................................................ 73.2 Unpacking the EVM ....................................................................................................... 73.3 Power Supply Setup ...................................................................................................... 73.4 GUI Software Installation ................................................................................................. 83.5 Operational Sequence and Indicators .................................................................................. 94 System Interfaces ................................................................................................................ 94.1 Power Supply (PSU) Interface (PVDD and GND) .................................................................... 94.2 J1 Amplifier Connection to MC012 Controller Module .............................................................. 104.3 Loudspeaker Connectors (J3 - J6) .................................................................................... 104.4 SPDIF Optical Input Connector ........................................................................................ 114.5 SPDIF Co-Axial Input Connector ...................................................................................... 114.6 USB Connector .......................................................................................................... 115 Protection .......................................................................................................................... 115.1 Short-Circuit Protection and Fault-Reporting Circuitry .............................................................. 115.2 Fault Reporting ........................................................................................................... 11Appendix A Design Documents ................................................................................................... 12A.1 HPL-MC012 Schematic ................................................................................................. 12A.2 HPL-MC012 Composite Drawings .................................................................................... 14A.3 TAS5102/3EVM Schematic ............................................................................................ 15A.4 TAS5102/3EVM Composite Drawings ................................................................................ 16A.5 Heat Sink Drawing ....................................................................................................... 19A.6 Parts List .................................................................................................................. 19

Important Notices ............................................................................................................... 24

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List of Figures

1 Physical Structure for TAS5102/3EVM ................................................................................... 62 Modulator and Power Stage Board Connection Example .............................................................. 73 TAS5086 GUI Window ...................................................................................................... 84 Recommended Power-Up Sequence .................................................................................... 10

List of Tables

1 Related Documentation From Texas Instruments ....................................................................... 52 Recommended Supply Voltage ............................................................................................ 83 Recommended Supply Voltages ........................................................................................... 94 J9/J10 Pin Description Amplifier/Controller Connector ................................................................ 105 Output Pin Description ..................................................................................................... 106 TAS5102 Warning/Error Signal Decoding .............................................................................. 11A-1 Bill of Materials for HPL-MC012 .......................................................................................... 19A-2 Bill of Materials for TAS5103EVM ....................................................................................... 21A-3 Bill of Materials for TAS5102EVM ....................................................................................... 22

4List of Figures SLLU106 – August 2008Submit Documentation Feedback

1 Related Documentation from Texas Instruments

1.1 Additional Documentation

2 Overview

User's GuideSLLU106 – August 2008

TAS5102EVM and TAS5103EVM for the TAS5102 andTAS5103 Digital Amplifier Power Output Stages

This user's guide describes the operation of the TAS5102 and TAS5103 evaluation modules (EVM) fromTexas Instruments.

Table 1 contains a list of data sheets that have detailed descriptions of the integrated circuits used in thedesign of the HPL-MC012 Modulator/Controller Module which accompanies the TAS5102EVM andTAS5103EVM as well as the link to the TAS5102/3 data sheet. These documents can be obtained fromthe Texas Instruments Web site at http://www.ti.com .

Table 1. Related Documentation From TexasInstruments

Part Number Literature Number

TAS5086 SLES131TAS5102/3 SLLS801TUSB3210 SLLS466UA78M12CKTPR SLVS059TPS40200D SLUS659TPS3825-33DBVT SLVS165

•Personal Computer (PC) Configuration Tool for TAS5086 (TAS5086 GUI version 4.0 or later). Thissoftware comes on the compact disk in the EVM package.

The TAS5102EVM and TAS5103EVM packages are composed of two separate modules, the HPL-MC012Modulator/Controller Module and the TAS5102EVM or TAS5103EVM Amplifier Module. They aredesigned so that the user can separate the two modules and connect the TAS5102EVM or TAS5103EVMAmplifier Module into a target system via a ribbon cable. Keep this ribbon cable as short as possible toavoid degradation in the PWM signals.

The TAS5102 and TAS5103 customer evaluation amplifier modules each demonstrate two audiointegrated circuits — the TAS5086 and the TAS5102 or TAS5103 from Texas Instruments (TI).

The TAS5086DBT is a high-performance, 32-bit (24-bit input), multichannel PurePath Digital™ pulse widthmodulator (PWM) based on Equibit™ technology with fully symmetrical AD modulation scheme. It acceptsan input sample rate from 32 kHz to 192 kHz. The device also has digital audio processing (DAP) thatprovides bass management, advanced performance, and a high level of system integration.

The TAS5102 is a compact, high-power, digital amplifier power stage designed to drive an 8- Ωloudspeaker up to 20 W/channel at 10% THD+N. It contains integrated gate-drive, four matched andelectrically isolated enhancement-mode N-channel power DMOS transistors, and protection/fault-reportingcircuitry. The DAD package has a PowerPAD™ package on the top side for heat transfer through a heatsink. The heat sink in this design is for evaluation purposes only.PurePath Digital, Equibit, PowerPAD are trademarks of Texas Instruments.Windows is a trademark of Mircrosoft Corporation.

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2.1 TAS5102EVM and TAS5103EVM Features

2.2 PCB Key Map

SPDIF Receiver 3.3V SMPS

USB Controller TAS5086 TAS5102

Power

Supply

Overview

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The TAS5103 is a compact, high-power, digital amplifier power stage designed to drive an 8- Ωloudspeaker up to 15 W/channel at 10% THD+N. It contains integrated gate-drive, four matched andelectrically isolated enhancement-mode N-channel power DMOS transistors, and protection/fault-reportingcircuitry. The DAP package has a PowerPAD™ package on the bottom side for heat transfer through theprinted-circuit board.

Either of these EVMs plus the HPLMC-012 form a complete two-channel, digital audio amplifier systemwhich includes digital input (S/PDIF), control interface (via USB) to PC and DAP (digital audio processor)features like digital volume control, bass management, and input and output multiplexers.

This EVM is designed to illustrate a low-cost approach to an amplifier design using this device. Improvedperformance, at increased cost, can be achieved with a high-performance configuration.

•Modular approach comprised of TAS5102EVM or TAS5103EVM amplifier modules and HPL-MC012modulator/controller module•Two-channel evaluation module.•Self-contained protection system (short-circuit and thermal).•Standard I

S and I

C control via SPDIF and USB•Double-sided, plated-through printed-circuit board (PCB) layout•Single power supply operation

Physical structure for the TAS5102/3EVM is illustrated in Figure 1 .

Figure 1. Physical Structure for TAS5102/3EVM

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3 Quick-Setup Guide

3.1 Electrostatic Discharge Warning

3.2 Unpacking the EVM

3.3 Power Supply Setup

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Quick-Setup Guide

This section describes the TAS5102/3EVM board in regards to power supplies and system interfaces. Itprovides information regarding handling and unpacking, absolute operating conditions, and a descriptionof the factory default switch and jumper configuration.

The section also provides a step-by-step guide to configuring the TAS5102/3EVM for device evaluation.

Many components on the TAS5102/3EVM are susceptible to damage by electrostatic discharge (ESD).Customers are advised to observe proper ESD handling precautions when unpacking and handling theEVM, including the use of a grounded wrist strap at an approved ESD workstation.

CAUTION

Failure to observe ESD handling procedures can result in damage to EVMcomponents.

On opening the TAS5086-TAS5102EVM or TAS51033EVM package, ensure that the following items areincluded:

•1 pc. TAS5102/3 EVM Power Stage Board•1 pc. HPL-MC012 Modulator/Input Board•Because this system has standard connectors, no cables are supplied•1 pc. TAS5102/3EVM CD-ROM.

If any of these items are missing, contact the Texas Instruments Product Information Center nearest youto inquire about a replacement.

Connect the Modulator/Input board to the Power Stage board with the docking connectors on each board.Use care because this connector is not keyed.

Figure 2. Modulator and Power Stage Board Connection Example

To power up the EVM, one power supply is needed for system power, logic and gate-drive, and for outputstage supply. The power supply is connected to the EVM with banana cables or stripped insulated wire.

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3.4 GUI Software Installation

Quick-Setup Guide

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Table 2. Recommended Supply Voltage

Description Voltage Limitations Current Requirement Connector

Output stage power supply 8 V – 23 V 5 A Red/black

CAUTION

Applying voltages above the limitations given in Table 2 can cause permanentdamage to your hardware.

The TAS5086 GUI provides easy control of all registers in TAS5086. To install the GUI, run the setup filefrom the TAS5102/3 CD-ROM.

After installation, turn on the power supply, and connect the USB cable to the Modulator/Controller board.

Start the GUI program from The Windows™ menu. (Program Files/Texas Instruments Inc) The start-up ofthe GUI takes few seconds.

Figure 3. TAS5086 GUI Window

From the files menu, load the configuration file:TAS5102 EVM Configuration.cfg

The file is located on the TAS5102/3EVM CD-ROM. This file contains all settings for a default setup of theEVM.

For easy access of the file, it is recommended to copy the files into directory where the GUI is installed.Default is C:\Program Files\Texas Instruments Inc\TAS5086\.

For more advanced use of the GUI and the features of the TAS5086 modulator, see the GUI User’s Guideand the TAS5086 data sheet (SLES131 ). The GUI User's Guide can be accessed by clicking on Help inthe toolbar and then selecting User's Guide in the drop-down menu.

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3.5 Operational Sequence and Indicators

4 System Interfaces

4.1 Power Supply (PSU) Interface (PVDD and GND)

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System Interfaces

•After connecting the power supply and turning it on, the power supply current must be ~50 mA. Theamplifier reset LED must be on.– The PVDD and 3.3-V LEDs must be on. If not, check the connections to the power supply.•Connect the SPDIF cable, either optical or coaxial, to an SPDIF source.•Connect the USB cable and the USB LED (blue LED must be on).– The EVM must enumerate without the installation of a USB driver; it is a Windows™ audio classdevice.•Start the GUI. (It must not give an indication of COMMUNICATION ERROR).– C:\Program Files\Texas Instruments Inc\TAS5086 GUI•Load the configuration file.– (File, Load, Config File, TAS5102 EVM Configuration.cfg)– The AMP RESET LED must go off.– The power supply current must be ~100 mA.– This indicates that the amplifier is switching and ready for audio input.– The SPDIF indicator must be on (blue LED), when locked to a valid source of SPDIF.•If the preceding conditions are met, the EVM system is ready to accept audio data.– Note: The default gain setting of the TAS5086 GUI is 0 dB. If you are connecting directly from amusic source (CD player) for input and speakers for output, you may want to use the volumecontrol function of GUI to reduce the gain before the program material is started.

This section describes the TAS5102/3 EVM board in regards to power supplies and system interfaces.

The TAS5102/3 EVM module must be powered from a well-regulated external power supply. Good audioperformance requires a stabilized power supply with low ripple voltage and low output impedance.

Note: The length of power supply cable must be minimized. Increasing the length of the PSU cableis equal to increasing the distortion for the amplifier at high output levels and lowfrequencies.

Maximum output stage supply voltage depends of the speaker load resistance. For the recommendedmaximum supply voltage, see the TAS5102/3 data sheet (SLLS801 ).

Table 3. Recommended Supply Voltages

Voltage LimitationsDescription Current Recommendations(8- ΩLoad)

Output stage power supply 8 V – 23 V 5 A

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Output stage power supply

RESET

>1 ms

System power supply

4.2 J1 Amplifier Connection to MC012 Controller Module

4.3 Loudspeaker Connectors (J3 - J6)

System Interfaces

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The recommended TAS5102/3 power-up sequence is shown in Figure 4 . For proper TAS5102/3operation, the RESET signal should be kept low during power up. RESET is pulled low during power upfor 200 ms by the onboard reset generator (U2).

Figure 4. Recommended Power-Up Sequence

Table 4. J9/J10 Pin Description Amplifier/Controller Connector

Net-Name atPin No. DescriptionSchematics

1, 2, 5, 6 ,10, 11, 28 DGND Low-current ground for modulator/controller3, 4 PVDD1 PVDD buffered through 24- Ωresistor to power the modulator/controller7 OTW Overtemperature warning from the amplifier (T > 125 °C)8, 9, 13, 15, 17, 19, 20, 21,

NC Not connected22, 23, 25, 2712 PWM_A Channel A PWM signal from modulator14 PWM_B Channel B PWM signal from modulator16 PWM_C Channel C PWM signal from modulator18 PWM_D Channel D PWM signal from modulator24 RESET Resets the TAS5102/326 FAULT Power stage fault indicator

CAUTION

Both positive and negative speaker outputs are floating and may not beconnected to ground (e.g., through an oscilloscope).

Table 5. Output Pin Description

Net-Name at Schematics Description

OUT_A Speaker positive outputOUT_B Speaker negative outputOUT_C Speaker positive outputOUT_D Speaker negative output

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