Texas Instruments eZAudio TPA2015D1 User manual

User's Guide
SLOU312–June 2011
eZAudio TPA2015D1 Demonstration Kit
This user’s guide describes the operation of the eZAudio TPA2015D1 Demonstration Kit. This document
provides setup instructions and design information including schematic, bill of materials, and printed-circuit
board (PCB) layout drawings.
Contents
1 Overview ..................................................................................................................... 2
1.1 Kit Contents ......................................................................................................... 2
1.2 Evaluation Board Specifications ................................................................................. 3
2 Quick-Start Guide ........................................................................................................... 3
2.1 Powering the Device ............................................................................................... 3
2.2 Running the Demonstration ....................................................................................... 4
3 Hardware Description ...................................................................................................... 7
3.1 TPA2015D1 Features ............................................................................................. 7
4 Schematics, PCB and Bill of Materials ................................................................................... 9
4.1 Schematics .......................................................................................................... 9
4.2 Printed-Circuit Board ............................................................................................. 12
4.3 Bill of Materials .................................................................................................... 17
Appendix A Technical Specifications ......................................................................................... 19
List of Figures
1 eZAudio TPA2015D1 Demonstration Kit Schematic ................................................................... 9
2 EVM Supply Generation Schematic .................................................................................... 10
3 MSP430 Schematic ....................................................................................................... 11
4 Display and Joystick Schematics........................................................................................ 11
5 Top Assembly.............................................................................................................. 12
6 Bottom Copper............................................................................................................. 13
7 Top Copper................................................................................................................. 14
8 Copper Layer 2 ............................................................................................................ 15
9 Copper Layer 3 ............................................................................................................ 16
1
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Overview www.ti.com
1 Overview
The ezAudio TPA2015D1 demonstration kit is a compact and versatile platform that highlights the
TPA2015D1 key features of battery-tracking, SpeakerGuard™automatic gain control (AGC) and
integrated boost converter.
The demonstration kit allows the user to quickly demonstrate the advanced features of the TPA2015D1
via an intuitive LCD-based interface. The user can simulate battery depletion in order to measure the input
current and power output performance related to portable applications.
The ezAudio TPA2015D1 can be powered by the included batteries or by a USB connection. Although the
demonstration board is not designed for evaluation, the kit does contain a mini PCB that can be used for
evaluation purposes.
NOTE: This document presents evaluation module (EVM) specifications, audio performance
measurements graphs, and design documentation that includes complete circuit descriptions,
schematic diagrams, a parts list, and PCB layout design. Gerber (layout) files are available
from the TI Web site at http://www.ti.com.
1.1 Kit Contents
•(1) ezAudio TPA2015D1 demonstration board
•(1) TPA2015D1 WCSP (YZH) mini device
•(1) MP3 player
•(1) 3,5-mm audio cable
•(1) AAA battery
•(3) AA batteries
•(1) 8-Ωspeaker
•(1) Quick-start guide cards
If any item is missing, contact the Texas Instruments Product information Center nearest you to inquire
about a replacement.
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www.ti.com Quick-Start Guide
1.2 Evaluation Board Specifications
•Board supply voltage: 4.5 Vdc –5.5 Vdc from one of the following sources:
–Device USB cable (connected to a personal computer)
–(3) AA batteries
•Board supply current: 30 mA, typical
•Breakout power output: 5 Vdc (500 mA, maximum)
•Speaker power: 1 W, maximum
•Dimensions: 10.5 cm ×6.5 cm ×2.2 cm (L ×W×H)
•RoHS status: n/a
When the evaluation board is used in USB Host mode, the host connector is capable of supplying power
to the connected USB device. The available supply current is limited to ~250 mA unless the evaluation
board is powered from an external 5-V supply with a ≥600 mA rating.
2 Quick-Start Guide
2.1 Powering the Device
1. Speaker. Plug the speaker into the white jack on the
left side of the board.
2. Audio Cable. Plug 3,5-mm audio cable into the board
and MP3 player.
3. Battery Power. To turn on the board, move the
jumper (bottom right side of board) to the BAT
position.
USB Power (Optional). If batteries are discharged or
unavailable, the board can be powered over a USB
connection. Move the jumper (bottom right side of
board) to USB position.
Battery Indicator. A low-battery indicator is on the
right side of the joystick. The LED turns on when the
battery voltage drops below 3.7 V
3
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Advance Song
HOLD Volume
Quick-Start Guide www.ti.com
4. Adjust Contrast. Click (press down) the joystick
button to cycle through different contrast values.
Reset (Optional). A reset button is located to the left
of the screen.
5. MP3 Player. To turn on the MP3 player, check that the Hold switch is to the left, and press the Play
button. To advance to the next song, move the dial in the upper left corner to the right. To turn off,
hold the Play button for 3 seconds.
2.2 Running the Demonstration
The device defaults to the following settings when booting up: Gain: 20 dB, AGC: 3.97 V, VDD: 3.60 V,
Boost: EN.
NOTE: The speaker (or similar load) must be connected to the device to ensure proper
measurements. To get more steady current and power measurements, use the included sine
wave MP3 file.
1. Joystick. Raise VDD to maximum by moving the joystick UP.
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www.ti.com Quick-Start Guide
2. MP3 Player. Move the dial in the upper left corner to the right to select the sine wave.
3. MP3 Player. Increase the volume to 3/4 of maximum. At that volume, the current is approximately 400
mA (sine wave) and the power output approximately1 W.
4. Joystick. Move the joystick down to bring VDD below the AGC inflection point (<3.97 V). Notice that
the current draw (~250 mA) and power output (~0.45 W) decrease.
Explanation. This demonstrates the battery tracking feature of the TPA2015D1. When the battery
voltage reaches the AGC threshold, the TPA2015D1 begins to reduce automatically the gain in order
to save battery life and protect the speaker.
5. Joystick. Move the joystick down twice to decrease the battery voltage. The current and power
continue to decrease.
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Quick-Start Guide www.ti.com
6. Joystick. Move the joystick to the right until you see AGC on the top menu bar.
7. Joystick. Move the joystick down until the AGC is disabled.
Explanation. Notice the current draw and power output increase, indicating the device is no longer
tracking the battery voltage. The current increases in order to maintain power output. The audio also
sounds distorted without AGC enabled.
8. Joystick. Move the joystick up until AGC is enabled by choosing one of the three values.
9. Joystick. Move the joystick to the right until VDD is displayed again.
10. Joystick. Move the joystick UP until VDD is at maximum.
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www.ti.com Hardware Description
11. MP3 Player. Increase the volume of the MP3 player to 100%.
12. Joystick. Move the joystick to the right until BOOST is displayed
13. Joystick. Move the joystick down to disable the BOOST.
Explanation. When the boost is disabled, the sound is distorted because the signal is clipped at the
battery voltage rails. When boost is enabled, the increased headroom for the output swing significantly
reduces clipping.
3 Hardware Description
3.1 TPA2015D1 Features
2-W constant output, mono Class-D audio amplifier with integrated boost converter and battery tracking
SpeakerGuard™AGC
7
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IN-
IN+
GAIN
ENB
END GND
PVDD
OUT+
OUT-
AGC
2.2 Hm
4.7 F - 22 Fm m
2.2 F - 10 Fm m Differential
Audio Inputs
Gain Control
AGC Control
DC/DC Enable
Class-D Enable
Connected to Supply
TPA2015D1
Hardware Description www.ti.com
Features Benefits
●2 V into 8 Ωat 3.6 V (6% THD) ●36% Louder audio than the leading competition
●Constant output power of 2 W (3.6 V – ● Consistent audio loudness across the Li-ion battery
5 V)
●2.3-V to 5.2-V supply voltage ●Direct connection to Li-ion/future battery technologies
●Battery tracking AGC ●Prevents early shutdown at low-battery voltage (<3 V)
●Battery tracking SpeakerGuard™ ● Protects speakers by preventing clipping
●High efficiency (81%) (at 1 W and 3.6 V ●Eliminates GSM/TDMA frame rate noise
●Very high PSRR - 90 dB ●27% Better efficiency results in –2x longer battery life
●Ultralow quiescent current (1.7 mA) ●~5x Lower quiescent current than the competition
●Integrated input low-pass filter ●Rejects out-of-band noise from codec/DAC by 30 dB
●2 mm ×2 mm, 0,5-mm pitch, 16-ball ●20% Smaller package size than the competition
WCSP
Applications
●Cell phones/smart phones
●Personal navigation devices
●Notebook PCs
●Portable clocking stations
●Portable DVD players
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C6
0.001uF
C7
0.001uF
GND
GND
GND
GND
GND
GND
GND
GND
Vdd
GND
GND
39K
R1
39Kohms
VddVdd
18K
R3
18Kohms
GND
C3
10uF
27K
R2
27Kohms
C5
22uF
GND
GND
GND
Vdd
GND
GND
GND
GND
GND
2
1
J1
5
3
1
4
2
Shield
RIGHT
LEFT
21
FB2
1
2
L1
1
2
392Kohms
R9
90.9Kohms
R10
90.9Kohms
392Kohms
GND
R12
499Kohms
AGC and Gain control
Input Section
Vrms Capture
Voltage divider
to accomodate
VFS of A/D converter
eZ Audio-TPA2015D1 Demo Kit
www.ti.com Schematics, PCB and Bill of Materials
4 Schematics, PCB and Bill of Materials
4.1 Schematics
Figure 1. eZAudio TPA2015D1 Demonstration Kit Schematic
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GND
GND
GND
GND
GND
0.1uF
GND
0.1uF
GND
Vdd
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
0.1uF
GND GND
GND
0.1uF
GND
GND
GND
0.1uF
C30
GND
0.1uF
C29
GND GND
GND
GND
GND
GND
GND PWR SELECT
GND
GND GND GND GND
1
2
L3
21
L2
UX60-MB-5ST
1
2
3
4
5
6
7
8
9
10
11
USB
NC
NC
Case
Case
Case
Case
Data+
GND
ID_NC
5v
Data-
GND
1
2
BP1
L4
2
1
R26
470mohms
1.8V to 4.8V Adjustable Output, 1A Step-Down Converter
EVM Supply Generation
100 Kohm
Digital Pot
IBAT Meter
Shunt resistor
INA333
IBAT Shunt Monitor
Schematics, PCB and Bill of Materials www.ti.com
Figure 2. EVM Supply Generation Schematic
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GND
GND
GND
GND GND
GND
GND
GND
GND
GND GND
GND
GND
MSP 430
DISPLAY
GND
GND
GND
JOY STICK
GND
GND
GND
R43
5.1Kohms
www.ti.com Schematics, PCB and Bill of Materials
Figure 3. MSP430 Schematic
Figure 4. Display and Joystick Schematics
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Schematics, PCB and Bill of Materials www.ti.com
4.2 Printed-Circuit Board
Figure 5. Top Assembly
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www.ti.com Schematics, PCB and Bill of Materials
Figure 6. Bottom Copper
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Schematics, PCB and Bill of Materials www.ti.com
Figure 7. Top Copper
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Figure 8. Copper Layer 2
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Schematics, PCB and Bill of Materials www.ti.com
Figure 9. Copper Layer 3
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www.ti.com Schematics, PCB and Bill of Materials
4.3 Bill of Materials
Table 1. Bill of Materials for eZAudio TPA2015D1 Demonstration Kit
Mfr Part No. Qty Ref Des Description Mfr Name
CAPACITORS
GRM21BR71A106KE51L 7 C3,C17,C20,C22, CAP SMD0805 CERM 10UFD 10V10% X7R ROHS MURATA
C24,C27,C46
LMK212BJ226MG-T 1 C5 CAP SMD0805 CERM 22UFD 10V 20% X5R ROHS TAIYO YUDEN
C1608X7R1C105K 8 C1,C2,C42,C43,C44, CAP SMD0603 CERM 1.0UFD 16V 10% X7R ROHS TDK
C45,C48
INDUCTORS
1239AS-H-2R2N=P2 4 L1,L2,L3,L4 INDUCTOR POWER SMD1008 2.2uH RDC=80mOHMS 2.3A TOKO JAPAN
DFE252012C ROHS
MPZ2012S101A 2 FB1,FB2 FERRITE BEAD, 100 Ohms 4A 100MHz SM0805 ROHS TDK
HEADERS/JACKS
22-12-2024 1 H3 HEADER THU 2P MALE RA 100LS ROHS MOLEX
SJ-43515TS-SMT 1 J1 JACK AUDIO MINI(3.5MM 3-COND PCB-RA ROHS CUI STACK
UX60-MB-5ST 1 USB JACK USB MINIB SMT-RA 5PIN ROHS HIROSE
CUSTOM JACKS/CONNECTORS
BH3AA-PC 1 BP1 BATTERY HOLDER 3 AA TH ROHS MPD
STANDOFFS AND HARDWARE
2031 4 SO1,SO2,SO3,SO4 STANDOFF,4-40,1.0INx3/16IN,ALUM RND F-F KEYSTONE
ELECTRONICS
BOM ITEMS WITH NO VALID SORT NUMBER
C1608C0G1H102J 2 C6,C7 TI JAPAN ONLY CAPACITOR,SMT,0603,CERAMIC,1000pF,50V,5% TDK
ERJ-2GEJ393 1 R1 RESISTOR,SMT,0402,THICK FILM,5%,1/16W,39K PANASONIC
ERJ-2GEJ183 1 R3 RESISTOR,SMT,0402,THICK FILM,5%,1/16W,18K PANASONIC
ERJ-2GEJ273 1 R2 RESISTOR,SMT,0402,THICK FILM,5%,1/16W,27K PANASONIC
C1005X7R1C473K 2 C8,C9 CAPACITOR,SMT,0402,CER,47000pF,16V,10%,X7R TDK
CRCW0603100F 2 R7,R8 RESISTOR,SMT,0603,1%,1/10W,100 OHM VISHAY
CRCW06031001F 3 R4,R20,R21 RESISTOR,SMT,0603,1%,1/10W,1.00K VISHAY
CRCW06031003F 4 R5,R6,R40,R41 RESISTOR,SMT,0603,1%,1/10W,100K VISHAY
0603YC104JAT2A 4 C4,C12,C16,C26 CAPACITOR,SMT,0603,CERAMIC,0.1uF,16V,5%,X7R AVX
2163-02-01-P2 1 JP SE HEADER,THU,2P,MALE,2mmLS,SINGLE ROW,1x2,15uGOLD,118TL NORCOMP
DUT_BGA_16YZH 1 U1 DUT,SMT,16P,BGA,0.5mmLS,2.25mmSQ (Customer Supply) TI
CRCW06031002F 2 R14, R18 RESISTOR,SMT,0603,1%,1/10W,10.0K VISHAY
C0603C300J5GAC 3 C13,C14,C15 CAPACITOR,SMT,0603,CERAMIC,COG(NPO),50V,5%, 30pF KEMET
INA333AIDGK 2 U5,U7 LOW-POWER SINGLE-SUPPLY CMOS INSTRUMENT AMPLIFIERS TI/BURR-BROWN
ERJ-3GSYJ514 5 R13,R16,R17, RESISTOR,SMT,0603,5%,1/10W,510K PANASONIC
R24,R25
ERJ-3ENF000 2 R30,R31,R9 RESISTOR,SMT,0603,0 OHM,1%,1/10W PANASONIC
GRM40Y5V104Z25V 6 C18,C21,C23, 25V,±20%,.1uF MURATA
C25,C29,C30
TPL0102-100PWR 1 U8 256 TAPS DUAL CHAN POT W/NVM TI
VJ0603A220FXAAT 1 C19 CAPACITOR,SMT,0603,CERAMIC,22pF,50V,1%,COG(NPO),30ppm VISHAY
RL1632R-R470-F 1 R26 RESISTOR,SMT,1206,THIN FILM, 0.47OHM,1%,1/2W SISUMO
TPS62290DRV 2 U6,U10 1A STEP DOWN CONV ADJ TI
TPS63002DRC 1 U9 HIGH EFFIC SING INDUC BUCK BOOST CONV W/ 1.8A SW TI
ERJ-3GSYJ332 1 R22 RESISTOR,SMT,0603,5%,1/10W,3.3K PANASONIC
MSP430F5438AIPZ 1 U11 MIXED SIGNAL MICROCONTROLLER TI
GRM39COG220J50V 1 C28 CAPACITOR,SMT,0603,CERAMIC,50V,5%,22pF MURATA
ERJ-3GSYJ364 1 R33 RESISTOR,SMT,0603,5%,1/10W,360K PANASONIC
CRCW06038062F 1 R34 RESISTOR,SMT,0603,1%,1/10W,80.6K VISHAY
ERJ-3GSYJ473 3 R35,R38,R39 RESISTOR,SMT,0603,5%,1/10W,47K PANASONIC
T491A104K035AS 5 C32,C34,C38, TAN CAP,SMT,EIA-A,0.10uF,35V,10% KEMET
C40,C41
17
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Table 1. Bill of Materials for eZAudio TPA2015D1 Demonstration Kit (continued)
Mfr Part No. Qty Ref Des Description Mfr Name
293D475X5016A2T 2 C33,C39 CAP,TAN,SMT, 4.7uF,16V,±5%,–55~85C VISHAY SPRAGE
MPZ1608S601A 1 FB4 FERRITE,SMT,0603,600 OHM,1A TDK
CC4V-T1 1 OSC *HAND SOLDER*CRYSTAL,SMT,32.768kHz, 9pF±100ppm MICRO CRYSTAL
ECS-T1AY225R_UN 2 C36,C37 (Uninstalled Part) UNINSTALLED
ERA-3YEB681V 1 R36 RESISTOR,SMT,0603,680 OHM,0.1%,1/16W PANASONIC
ERJ-3GSYJ499 1 R37 RESISTOR,SMT,0603,1%,1/10W,499 PANASONIC
EADOGS102W-6 1 DISP DISPLAY,THU,102X64 DOTS EA
TPA511GLFS 1 SW1 SWITCH,MULTIDIR,SMD C&K
TS5A3357DCUR 2 U2,U3 5 OHM SP3T ANALOG SWITCH SINGLE-CHANNEL 3:1 TI
MULTI/DEMULTIPLEXER
06035C222JAT2A 1 C31 CAPACITOR,SMT,0603,CERAMIC,0.0022uF,50V,5%,X7R AVX
ECS-T1CY105R 1 C35 CAP,TAN,SMT, 1.0uF,16V,20%,DF=0.04 PANASONIC
EVQ-PPBA25 1 S1 SWITCH,SMT,2P,SPST-NO,2.5mm HEIGHT,DUST PROOF PANASONIC
LTST-C170KGKT 2 LED1,LED2 LED,SMT,0805,ULTRA-BRIGHT GREEN,2.0V LITEON
TPS75105DSK 1 U12 LOW DROPOUT LED DRIVER TI
TSM-107-01-T-DV 1 JTAG HEADER,SMT,14P,2x7,MALE,2 ROWS,100LS SAMTEC
TSW-103-07-G-S W/SHUNT 1 PWR SELECT HEADER,THU,3P,1X3,MALE,SINGLE,100LS,100TL WITH SAMTEC
SHUNT JUMPER
CRCW06034993F 1 R12 RESISTOR,SMT,0603,1%,1/10W,499K VISHAY
ERA-3YEB512V 1 R43 RESISTOR,SMT,0603,5.1K,0.1%,1/16W No Manufacturer Data
CRCW06033923F 2 R19,R15 RESISTOR,SMT,0603,1%,1/10W,392K VISHAY
CRCW06039092F 2 R9,R10 RESISTOR,SMT,0603,1%,1/10W,90.9K VISHAY
Component Count: 115
spacer, keeps putting in a blank page
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Appendix A Technical Specifications
A.1 Control Signals from MSP430 to TPA2015D1
•Nine signals are used to control functions of the TPA2015D1. These signals come from the onboard
MSP430.
•Gain0, Gain1 (Control TPA2015D1 gain)
•AGC0, AGC1 (Control TPA2015D1 inflection point)
•ENB (TPA2015D1 Enable for the boost)
•END (TPA2015D1 Enable for the Class-D)
•REG_EN (Enable for VDD regulator)
•I2C_SCL, I2C_SDA( for Digital POT, VDD control)
Gain0, Gain1
TPA2015D1
Gain0 Gain1 Gain
Gain Pin
L L Float 15.5 dB
H L Vdd/2 15.5 dB
L H Vdd 20 dB
H H GND 6 dB
L = 0 V and H = 3.3 V
Gain0 and Gain1 change the gain settings for the TPA2015D1. They control the 3:1 analog switch to set
proper gain voltage.
AGC0, AGC1
TPA2015D1
AGC0 AGC1 Inflection Point RAGC
(V)
L L Disabled Open
L H 3.35 V
H L 3.78 V
H H 3.96 V
L = 0 V and H = 3.3 V
AGC0 and AGC1 change the inflection point for the TPA2015D1. They control the 3:1 analog switch to set
the external AGC resistor.
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Control Signals from MSP430 to TPA2015D1 www.ti.com
ENB, END
END: Enable for the Class-D. Set to Logic High
to enable
ENB: Enable for the Boost converter. Set to
Logic High to enable
These control signals must be asserted HIGH
after all switches and digital potentiometers
have been set to default conditions, and Default
VDD voltage has been measured by Stellaris
MCU (VDD default is 3.6 V) .
REG_EN
This control signal enables U6, the adjustable
VDD regulator. This signal needs to be asserted
HIGH after the analog switches and digital
potentiometers have been set to default
conditions.
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