Texas Instruments TPA3132D2EVM User Manual
User's Guide
SLOU375–July 2013
TPA3132D2EVM Audio Amplifier Evaluation Module
This evaluation module allows users to evaluate the TI's TPA3132D2 audio amplifier. This user's guide
contains an operations description, schematic, printed-circuit board (PCB) layout, and the bill of materials.
Contents
1 Introduction .................................................................................................................. 2
2 Operation ..................................................................................................................... 3
2.1 Quick-Start List for Stand-Alone Operation ..................................................................... 3
3 Schematic, Layout, and Bill of Materials ................................................................................. 4
3.1 TPA3132D2EVM Schematic ...................................................................................... 4
3.2 TPA3132D2EVM Printed-Circuit Board Layers ................................................................ 5
3.3 TPA3132D2EVM Bill of Materials ................................................................................ 6
List of Figures
1 TPA3132D2EVM Audio Power Amplifier – Top View.................................................................. 2
2 TPA3132D2EVM Audio Power Amplifier – Bottom View .............................................................. 2
3 TPA3132D2EVM Schematic............................................................................................... 4
4 TPA3132D2EVM – Top-Side Layout..................................................................................... 5
5 TPA3132D2EVM – Bottom-Side Layout................................................................................. 5
List of Tables
1 Power Supply Requirements .............................................................................................. 3
2 TPA3132D2EVM Jumpers................................................................................................. 3
3 TPA3132D2EVM Bill of Materials......................................................................................... 6
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Introduction
1 Introduction
The TPA3132D2EVM (EVM) customer evaluation module, Figure 1 and Figure 2, demonstrates the
TPA3132D2 integrated circuit (IC) from TI.
www.ti.com
Figure 1. TPA3132D2EVM Audio Power Amplifier – Top View
Figure 2. TPA3132D2EVM Audio Power Amplifier – Bottom View
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TPA3132D2EVM Audio Amplifier Evaluation Module SLOU375–July 2013
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2 Operation
2.1 Quick-Start List for Stand-Alone Operation
Section 2.1.1 and Section 2.1.2 provide instructions for the TPA3132D2EVM in stand-alone operation or
when connecting it into existing circuits or equipment. Connections to the EVM power supply and output
connectors can be made by inserting stripped wire or using banana jacks. The input connectors are RCA
phono jacks.
2.1.1 Power Supply
A single power supply is required to power the EVM. Because most of the pins are PVCC compliant, the
PVCC supply can also be used to power the analog supply (AVcc) and to pull up the logic pins for
shutdown (SD) control, and gain (GAIN). PLIMIT can be powered by an external supply connected to the
PLIMIT pin. Do not power the PLIMIT pin through the PLIMIT network when the PVCC supply is turned
off. This can damage the IC.
Table 1. Power Supply Requirements
Description Voltage Range Current Requirements Wire Size
PVCC 4.5 V to 26 V 3 A 24 AWG
1. Ensure that the external regulated power supply is turned OFF.
2. Connect the external regulated power supply, adjusted from 4.5 V to 26 V, to the PVCC and GND
banana jacks on the EVM taking care to observe marked polarity.
Operation
2.1.2 EVM Preparations
Inputs and Outputs
1. For a BTL configuration, remove jumpers from JP5 and JP6 and connect loads across the outputs
(LEFT+ and LEFT–) and (RIGHT+ and RIGHT–). For PBTL configuration, insert jumpers on JP5 and
JP6 and connect a single load from one of the left speaker jacks to one of the right speaker jacks
2. Connect audio inputs, either differential or single-ended, to the LIN and RIN RCA phono plugs for BTL
operation. For PBTL operation, connect a single input, differential or single-ended, to the RIN RCA
phono plug.
Jumper Function Options Notes
JP1 RCA Gnd to board GND
JP2 RCA Gnd to board GND
JP3 Fault to SD short Auto SD = insert, No SD= open When inserted, fault will pull down SD
JP4 Gvdd to Plimit short Insert to defeat, remove to enable See datasheet (SLOS841)
JP5 BTL or PBTL Insert for PBTL, remove for BTL JP5 and JP6 should match
JP6 BTL or PBTL Insert for PBTL, remove for BTL JP5 and JP6 should match
AM0 Oscillator frequency AM2=0, AM1=0, AM0=0 400 kHz
AM1 AM2=0, AM1=0, AM0=1 500 kHz
AM2 AM2=0, AM1=1, AM0=0 600 kHz
Table 2. TPA3132D2EVM Jumpers
AM2=0, AM1=1, AM0=1 1000 kHz
AM2=1, AM1=0, AM0=0 1200 kHz
AM2=1, AM1=0, AM0=1 Reserved
AM2=1, AM1=1, AM0=0 Reserved
AM2=1, AM1=1, AM0=1 Reserved
Power Up
1. Verify correct power supply voltage and polarity, and turn the external power supply ON. The EVM
begins to operate.
2. Adjust the audio source for the correct volume.
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