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User's Guide

SLOU264–March 2010

TPA2015D1 Audio Power Amplifier Evaluation Module

(EVM)

Contents

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

1.1 Description .......................................................................................................... 1

1.2 TPA2015D1 Specifications ....................................................................................... 1

2 Operation ..................................................................................................................... 2

2.1 Quick Start List for Stand-Alone Operation ..................................................................... 2

2.2 Boost Settings ...................................................................................................... 3

2.3 Power Up ............................................................................................................ 4

3 Reference .................................................................................................................... 5

3.1 TPA2015D1 EVM Schematic ..................................................................................... 5

3.2 TPA2015D1 EVM PCB Layers ................................................................................... 6

3.3 TPA2015D1 EVM Parts List ...................................................................................... 7

List of Figures

1 TPA2015D1 EVM Schematic.............................................................................................. 5

2 TPA2015D1 EVM – Top and Bottom Layers............................................................................ 6

List of Tables

1 TPA2015D1 EVM Parts List ............................................................................................... 7

1 Introduction

This section provides an overview of the Texas Instruments (TI) TPA2015D1 audio power amplifier

evaluation module (EVM). It includes a brief description of the module and a list of specifications.

1.1 Description

The TPA2015D1 is a high efficiency Class-D audio power amplifier with battery-tracking SpeakerGuard™

technology and an integrated boost converter. It drives up to 2 W into an 8-Ω speaker from low supply

voltages.

The TPA2015D1 audio power amplifier evaluation module is a complete, stand-alone audio board. It

contains the TPA2015D1 WCSP (YZH) Class-D audio power amplifier with an integrated boost converter.

All components and the evaluation module are Pb-Free.

1.2 TPA2015D1 Specifications

BAT

Supply voltage range 2.3 V to 5.2 V

Supply current 3 A Maximum

Continuous output power per channel, 8 Ω, V

BAT

= 3.6 V 2 W

Audio Input Voltage 0 V to V

BAT

Minimum load impedance 6 Ω

SpeakerGuard is a trademark of Texas Instruments.

SLOU264–March 2010 TPA2015D1 Audio Power Amplifier Evaluation Module (EVM)

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Summary of content (10 pages)

PAGE 1
User's Guide SLOU264 – March 2010 TPA2015D1 Audio Power Amplifier Evaluation Module (EVM) 1 2 3 Contents Introduction .................................................................................................................. 1.1 Description .......................................................................................................... 1.2 TPA2015D1 Specifications ....................................................................................... Operation ........................
PAGE 2
Operation 2 www.ti.com Operation This section describes how to operate the TPA2015D1EVM. 2.1 Quick Start List for Stand-Alone Operation Use the following steps when operating the TPA2015D1EVM as a stand-alone or when connecting the EVM into existing circuits or equipment. 2.1.1 Power and Ground 1. Ensure the external power sources are set to OFF. 2. Set the power supply voltage between 2.3 V and 5.2 V.
PAGE 3
Operation www.ti.com NOTE: The boost converter provides power to the Class-D amplifier. When the boost converter is shut down, the bypass mode will be active and the class-D amplifier will be supplied by the connected external voltage source. The TPA2015D1 has an auto pass through mode. Under normal operation (END = ENB = HIGH), the boost converter will automatically turn off if no audio signal is present at one of the inputs (IN+ or IN-). 2.
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Operation www.ti.com L= VBAT ´ (PVDD - VBAT) ΔIL ´ fBOOST ´ PVDD (2) ΔIL is inversely proportional to L. Minimize ΔIL as much as is necessary for a specific application. Increase the inductance to reduce the ripple current. Note that making the inductance too large prevents the boost converter from responding to fast load changes properly. Typical inductor values for the TPA2015D1 are 2.2 mH to 4.7 mH. Select an inductor with a small dc resistance, DCR.
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GND GND Vdd GAIN 2 GND AGC 4 5 1 2 6 0603 1.0ufd/16V C2 DNP 0603 JP IN 1.0ufd/16V Copyright © 2010, Texas Instruments Incorporated GND GND GND R3 18K 0402 R2 27K 0402 R1 39K 0402 3 Vdd R5 1 2 S1 100K 0603 GND 1 GND B2 D2 D3 2 1 S2 U1 WCSP16-YZH GND 2 2 100K 1 0603 R6 C3 L1 1206 GND 1 DNP 2 JP VDD Vdd B4 10ufd/10V 0805 C3 B3 2 D4 GND 2 JP SE 1.
PAGE 6
Reference TPA2015D1 EVM PCB Layers PCB EDGE 3.2 www.ti.com PCB EDGE 1 11 PCB EDGE Top Layer Bottom Layer Figure 2.
PAGE 7
Reference www.ti.com 3.3 TPA2015D1 EVM Parts List Table 1. TPA2015D1 EVM Parts List QTY REF DES Vendor and Part Number Manufacturer and Part Number Description TEXAS INSTRUMENTS TPA2015D1YZH TEXAS INSTRUMENTS TPA2015D1YZH 1.
PAGE 8
Reference www.ti.com Table 1. TPA2015D1 EVM Parts List (continued) QTY REF DES Vendor and Part Number Manufacturer and Part Number Description DIGI-KEY J587 EMERSON NPCS 111-2223-001 BINDING-POST, NONINSULATED, THRU, ROHS BINDING POSTS 4 GND, VDD, OUT+,OUT– STANDOFFS AND HARDWARE 4 HW1, HW2, HW3, HW4 DIGI-KEY 2027K KEYSTONE 2027 STANDOFF, 4-40 0.5IN 3/16IN DIA ALUM RND F-F 4 HW1, HW2, HW3, HW4 DIGI-KEY H342 BUILDING FASTENERS PMS 440 0025 PH 4-40 SCREW, STEEL 0.
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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.