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This user's guide describes the TPA2014D1 audio amplifier evaluation module (TPA2014D1EVM) and its
operation. It includes the EVM specifications, the schematic, the printed-circuit board layout, and the parts
list.
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1
Introduction
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2
Operation
3
4
5
1
TPA2014D1EVM Schematic
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3
1
2
TPA2014D1EVM Parts List
1
Introduction
This section provides an overview of the Texas Instruments (TI) TPA2014D1 audio amplifier evaluation
module (TPA2014D1EVM). It includes a brief description of the module and a list of EVM specifications.
1.1
Description
The TPA2014D1 is a 1.5 W, Class-D amplifier with built-in boost converter. It drives up to 1.5 W (10%
THD + N) into a 8-Ω speaker from low supply voltages.
The TPA2014D1 audio power amplifier evaluation module(EVM) is a complete, stand-alone audio board. It
contains the TPA2014D1 QFN (RGP) Class-D audio power amplifier with an integrated boost converter.
All components and the EVM are Pb-free.
1.2
TPA2014D1EVM Specifications
V
Supply voltage range
DD
I
Supply current
DD
Continuous output power per channel, 8 Ω, V
P
O
V
Audio Input Voltage
I
R
Minimum load impedance
L
SLOU211 - May 2008
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Contents
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List of Figures
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List of Tables
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= 3.6 V, V
DD
TPA2014D1EVM
= 5 V , THD + N =10%
CC
User's Guide
SLOU211 - May 2008
1
2
5
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8
5
6
7
5
8
-0.3 V to 5.5 V
750 mA
1.5 W
-0.3 V to V
+ 0.3 V
DD
8 Ω
TPA2014D1EVM
1
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Table of Contents
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Summary of Contents for Texas Instruments TPA2014D1
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Page 1: Table Of Contents
(TPA2014D1EVM). It includes a brief description of the module and a list of EVM specifications. Description The TPA2014D1 is a 1.5 W, Class-D amplifier with built-in boost converter. It drives up to 1.5 W (10% THD + N) into a 8-Ω speaker from low supply voltages. - Page 2 2.1.3 Gain Control The TPA2014D1 has three gain settings: 2 V/V, 6 V/V, and 10 V/V. 1. Use jumper J13 to set the gain as 2 V/V, 6 V/V, or 10 V/V. To achieve 2 V/V, place the jumper between heads 1 and 2; for 10 V/V, shunt heads 2 and 3; for 6 V/V, remove the jumper and let the gain pin float.
- Page 3 Working inductance decreases as inductor current increases. If the drop in working inductance is severe enough, it can cause the boost converter to become unstable, or cause the TPA2014D1 to reach its current limit at a lower output power than expected. Inductor vendors specify currents at which inductor values decrease by a specific percentage.
- Page 4 Increase the inductance to reduce the ripple current. Note that making the inductance too large prevents the boost converter from responding properly to fast load changes. Typical inductor values for the TPA2014D1 are 4.7 µH to 6.8 µH.
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Page 5: Tpa2014D1Evm Schematic
All power levels are calculated at 1% THD unless otherwise noted All values listed are for ceramic capacitors. The correction factor of 2 is included in the values. TPA2014D1EVM Schematic VOUT+ OUT+ VCCFB VOUT+ GAIN TPA2014D1 VOUT+ AGND VOUT- VOUT- OUT- INPUT/GND Figure 1. TPA2014D1EVM Schematic SLOU211 –... -
Page 6: Tpa2014D1Evm Pcb Layers
TPA2014D1EVM PCB Layers www.ti.com TPA2014D1EVM PCB Layers Figure 2. TPA2014D1EVM – Top Layer Note: C4 has two separate pad sizes. One is for a 1210 ceramic capacitor, and the other is for a size "C" tantalum capacitor. Do not populate more than one at a time. TPA2014D1EVM SLOU211 –... -
Page 7: Tpa2014D1Evm - Bottom Layer
TPA2014D1EVM PCB Layers www.ti.com Figure 3. TPA2014D1EVM – Bottom Layer SLOU211 – May 2008 TPA2014D1EVM Submit Documentation Feedback... -
Page 8: Tpa2014D1Evm Parts List
LED, Green 0805 Lumen DIBI-Key S.L.-LXT0805GW 67-1553-1-ND LED, Yellow 0805 Lumen DIBI-Key S.L.-LXT0805YW 67-1554-1-ND TPA2014D1 RGP Texas Instruments TPA2014D1RGP MH1-MH4 Standoff, 5/8" length, #4-40, Brass/Zinc plate MH5-MH8 Screw, 1/2" length, #4-40, Brass/Zinc plate MH9-MH12 Washer, #4, Brass/Zinc plate Note: DNP = Do Not Place TPA2014D1EVM SLOU211 –... - Page 9 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.
- Page 11 Authorized Distribution Brand： Website： Welcome to visit www.ameya360.com Contact Us： Address： 401 Building No.5, JiuGe Business Center, Lane 2301, Yishan Rd Minhang District, Shanghai , China Sales： Direct +86 (21) 6401-6692 Email amall@ameya360.com 800077892 Skype ameyasales1 ameyasales2 Customer Service： Email service@ameya360.com Partnership：...
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