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1 Introduction

1.1 Description

User's Guide

SLOU250 – January 2009

TPA3125D2 EVM

Contents

1 Introduction ................................................................................................................... 1

2 Quick Start for Stand-alone Operation .................................................................................... 3

3 Schematic and PCB Layers ................................................................................................ 5

4 Bill of Materials ............................................................................................................... 8

List of Figures

1 TPA3125D2 Audio Power Amplifier EVM - Top View ................................................................... 2

2 TPA3125D2 Audio Power Amplifier EVM - Bottom View ............................................................... 2

3 TPA3125D2 EVM Schematic............................................................................................... 5

4 TPA3125D2 EVM – Top Side Layout ..................................................................................... 6

5 TPA3125D2 EVM – Bottom Side Layout ................................................................................. 7

List of Tables

1 TPA3125D2 EVM Specifications .......................................................................................... 3

2 Gain Jumper Settings ...................................................................................................... 4

3 TPA3125D2 EVM Bill of Materials ......................................................................................... 8

The TPA3125D2 evaluation module (EVM) consists of a single 10-W, class-D, stereo audio power

amplifier, complete with a small number of external components mounted on a printed-circuit board. The

EVM can be used to directly drive speakers with an external analog audio source as the input. Figure 1

and Figure 2 display the top and bottom views of the EVM, respectively. For additional information, consult

the TPA3125D2 data sheet (SLOS611 ).

SLOU250 – January 2009 TPA3125D2 EVM 1

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Summary of content (10 pages)

PAGE 1
User's Guide SLOU250 – January 2009 TPA3125D2 EVM 1 2 3 4 Contents Introduction ................................................................................................................... Quick Start for Stand-alone Operation .................................................................................... Schematic and PCB Layers ................................................................................................ Bill of Materials ..................................................
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Introduction www.ti.com Figure 1. TPA3125D2 Audio Power Amplifier EVM - Top View Figure 2.
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Quick Start for Stand-alone Operation www.ti.com 1.2 EVM Specifications Table 1. TPA3125D2 EVM Specifications Value 2 VCC Supply voltage range ICC Supply current PO Continuous output power per channel 8 Ω, VCC = 24V, THD+N=10% RL Minimum load impedance Units 10 to 26 V 3 A 10 W 4 Ω Quick Start for Stand-alone Operation Use these procedures to operate the TPA3125D2 EVM in a stand-alone configuration, or when connecting it into existing circuits or equipment.
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Quick Start for Stand-alone Operation www.ti.com Table 2. Gain Jumper Settings GAIN1 GAIN0 ON ON 20 ON OFF 26 OFF ON 32 OFF OFF 36 (1) 2.2.3 1. 2. 3. 4. 4 (1) Amplifier Gain (dB) OFF denotes jumper is REMOVED; ON denotes jumper INSTALLED. Applying Power to the EVM Verify correct voltage and input polarity for the external power supplies. Turn ON. The EVM starts operation. Adjust the input signal.
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SLOU250 – January 2009 Submit Documentation Feedback 2 1 GND RCA (Red) RCA (Black) GRAY 6A/250V J1 PVCC 1 3 2 1 3 2 C6 GND 1.0ufd/16V GND 1.0ufd/16V C5 FB2 1000pfd/50V 0603 C3 GND GND 1000pfd/50V 0603 GND C11 1.0ufd/50V 0805 1.0ufd/16V 0603 C8 C10 GND GND 1.0ufd/16V 0603 C7 10K 0603 R2 GND 1.0ufd/16V 0603 C4 GND GND PVCCR 10K 0603 R1 1.
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Schematic and PCB Layers www.ti.com Figure 4.
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Schematic and PCB Layers www.ti.com Figure 5.
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Bill of Materials 4 www.ti.com Bill of Materials All components should be lead-free. Table 3. TPA3125D2 EVM Bill of Materials RefDes Description Qty Mfr Part No. Mfr Vendor Part No. Vendor U1 10W STEREO CLASS-D AUDIO POWER AMP N20-DIP ROHS 1 TPA3125D2N Texas Instruments TPA3125D2N Texas Instruments C3, C11, C13 CAP 1000PFD 50V 5% CERM 0603 COG ROHS 3 C1608C0G1H102J TDK Corp.
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EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
PAGE 10
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.