User’ s Gu ide
May 2004 HPL − Audio Power Amplifiers
SLOU165
IMPORTANT NOTICE
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Mailing Address: Texas Instruments
Post Office Box 655303 Dallas, Texas 75265
Copyright 2004, Texas Instruments Incorporated
EVM IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective
considerations, including product safety measures typically found in the end product incorporating the goods.
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic
compatibility and therefore may not meet the technical requirements of the directive.
Should this evaluation kit not meet the specifications indicated in the EVM User’s Guide, the kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED,
IMPLIED, OR S TATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user
indemnifies TI from all claims arising from the handling or use of the goods. Please be aware that the products
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). Due to the open construction
of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic
discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE
TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the EVM User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s Guide prior to handling the product. This notice contains important safety information about temperatures
and voltages. For further safety concerns, please contact the TI application engineer.
Persons handling the product must have electronics training and observe good laboratory practice standards.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any
machine, process, or combination in which such TI products or services might be or are used.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2004, Texas Instruments Incorporated
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the supply voltage range specified in this user’s
guide.The supply voltage range should be 8.5 V to 18 V, and supply current (I
) should be
cc
no greater than 3 A maximum.
Exceeding the specified input range may cause unexpected operation and/or irreversible
damage to the EVM. If there are questions concerning the input range, please contact a TI
field representative prior to connecting the input power.
Applying loads outside of the specified output range may result in unintended operation and/or
possible permanent damage to the EVM. Please consult the EVM User’s Guide prior to
connecting any load to the EVM output. If there is uncertainty as to the load specification,
please contact a TI field representative.
During normal operation, some circuit components may have case temperatures greater than
xxx°C. The EVM is designed to operate properly with certain components above xxx°C as
long as the input and output ranges are maintained. These components include but are not
limited to linear regulators, switching transistors, pass transistors, and current sense
resistors. These types of devices can be identified using the EVM schematic located in the
EVM User’s Guide. When placing measurement probes near these devices during operation,
please be aware that these devices may be very warm to the touch.
Mailing Address:
Texas Instruments
Post Office Box 655303
Dallas, Texas 75265
Copyright 2004, Texas Instruments Incorporated
Information About Cautions and Warnings
This book may contain cautions and warnings.
Information About Cautions and Warnings
Preface
Read This First
FCC Warning
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.
This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested
for compliance with the limits of computing devices pursuant to subpart J of
part 15 of FCC rules, which are designed to provide reasonable protection
against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case
the user at his own expense will be required to take whatever measures may
be required to correct this interference.
.
v
Related Documentation From Texas Instruments
Electrostatic Sensitive Devices
This EVM contains components that can potentially be damaged by
electrostatic discharge. Always transport and store the EVM in its
supplied ESD bag when not in use. Handle using an antistatic
wristband. Operate on an antistatic work surface. For more
information on proper handling, refer to SSYA008.
Related Documentation From Texas Instruments
- TPA3005D2 data sheet (SLOS427)
vi
Contents
Contents
1 Introduction 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Description 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TPA3005D2EVM Specifications 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Operation 2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Quick Start List for Stand-Alone Operation 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Power Supply 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.2 Inputs and Outputs 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.3 Evaluation Module Preparations 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.4 Control Inputs 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.5 Power Up 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Reference 3-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 TPA3005D2EVM Schematic 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3005D2EVM Parts List 3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figures
1−1 The TI TPA3005D2 Audio Power Amplifier EVM (Top View) 1-2 . . . . . . . . . . . . . . . . . . . . . . . . .
1−2 The TI TPA3005D2 Audio Power Amplifier EVM (Bottom View) 1-2 . . . . . . . . . . . . . . . . . . . . .
3−1 TPA3005D2EVM Schematic 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3−2 TPA3005D2EVM (Top Layer) 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3−3 TPA3005D2EVM (Bottom Layer) 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
2−1 TPA3005D2 Gain Settings 2-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3−1 TPA3005D2EVM Parts List 3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
vii
viii
Chapter 1
Introduction
This chapter provides a brief description of the TPA3005D2EVM.
Topic Page
1.1 Description 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 TP A3005D2EVM Specifications 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
1-1
Description
1.1 Description
The TPA3005D2 audio power amplifier evaluation module is a 6-watt per
channel class-D stereo audio power amplifier complete with a small number
of external components mounted on a circuit board that measures
approximately 2-1/4 inches by 1-3/4 inches (Figure 1−1 and Figure 1−2).
Figure 1−1.The TI TPA3005D2 Audio Power Amplifier EVM (Top View)
Figure 1−2.The TI TPA3005D2 Audio Power Amplifier EVM (Bottom View)
1.2 TPA3005D2EVM Specifications
Supply voltage range, V
Input voltage range, V
Supply current, I
CC
Continuous output power per channel, P
Minimum load impedance, R
CC
(GAIN0, GAIN1, LINN, LINP, RINN, RINP) −0.3 V to 6 V. . . . . . . . . . . . . . . . .
I
(SHUTDOWN) −0.3 V to VCC + 0.3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
I
: 8 Ω, VCC = 12 V 6 W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
L
8.5 V to 18 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 A Max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Ω. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2
Chapter 2
Operation
This chapter describes how to operate the TPA3005D2EVM.
Topic Page
2.1 Quick Start List for Stand-Alone Operation 2-2. . . . . . . . . . . . . . . . . . . . . .
Operation
2-1
Quick Start List for Stand-Alone Operation
2.1 Quick Start List for Stand-Alone Operation
Follow these steps to use the TPA3005D2EVM stand-alone or when
connecting it into existing circuits or equipment. Connections to the EVM
module header pins can be made via individual sockets, wire-wrapping, or
soldering to the pins, either on the top or the bottom of the module circuit board.
2.1.1 Power Supply
1) Ensure that all external power sources are set to OFF.
2) Connect an external regulated power supply, between 8.5 V and 18 V, to
the module VCC and GND pins taking care to observe marked polarity.
2.1.2 Inputs and Outputs
1) Ensure that the audio signal source level adjustments are set to minimum.
2) Connect the right and left positive audio source to the module RIN+ and
LIN+ pins, respectively. Connect the right and left negative audio source
to the module RIN− and LIN− pins, respectively.
3) If using single ended inputs, ground the LIN+ and RIN+ pins at the source
and connect the signal source to RIN− and LIN−. Conversely, RIN− and
LIN− should be grounded if RIN+and LIN+ are connected to the signal
source.
Note:
If RIN+ and LIN+ on the EVM are connected to ground, the RINP and LINP
pins on the TPA3005D2 IC are ac-grounded through C2 and C3.
2.1.3 Evaluation Module Preparations
1) Adjust the signal source level as needed.
2.1.4 Control Inputs
Note:
Refer to the TPA3005D2 data sheet for logic threshold voltage ratings.
1) SHUTDOWN: This pin is active low. A low on this pin shuts down the
amplifier; a high on this pin places the amplifier in the active state. Leaving
this pin floating also allows normal amplifier operation. Holding down
switch S1 places the amplifier in the shutdown state. Releasing S1 returns
the amplifier to the active state. The absolute maximum voltage on this
terminal is V
2) GAIN0, GAIN1: These pins control the amplifier gain. (See Table 2−1)
+ 0.3 V.
CC
2-2
Table 2−1.TPA3005D2 Gain Settings
GAIN1 (J1) GAIN0 (J2) GAIN (dB)
ON ON 15.3
ON OFF 21.2
OFF ON 27.2
OFF OFF 31.8
- ON = Jumper installed
OFF = Jumper removed
2.1.5 Power Up
1) Verify correct voltage and input polarity and set the external power supply
to ON. The EVM should begin operation.
2) Adjust the signal source level as needed.
3) Adjust the amplifier gain by installing or removing J1 and J2 jumpers. (See
Table 2−1)
Quick Start List for Stand-Alone Operation
Operation
2-3
2-4
Chapter 3
Reference
This chapter provides reference information for the TPA3005D2EVM.
Topic Page
3.1 TP A3005D2EVM Schematic 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 EVM PCB Layers 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 TPA3005D2EVM Parts List 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference
3-1
TPA3005D2EVM Schematic
3.1 TPA3005D2EVM Schematic
Figure 3−1.TPA3005D2EVM Schematic
VCC
ROUT+
GND
ROUT−
SHUTDOWN
RIN−
RIN+
LIN+
LIN−
J2
J1
120 kΩ
L1
C22
1 nF 1 nF
220 nF
C18
VCC
C1
0.47 µF
C5
0.47 µF
C4
120 kΩ
R2
120 kΩ
0.47 µF
0.47 µF
0.47 µF
R3
SHUTDOWN
RINN
RINP
V2P5
LINP
LINN
AVDDREF
NC
GAIN0
GAIN1
NC
NC
BSRP
PVCCR
S1
C2
C3
R4
C15
10 µF
C9 C10
0.1 µF 0.1 µF
ROUTP
ROUTP
PVCCR
TPA3005D2
PGNDR
L2
C23
PGNDR
ROUTN
VCC
ROUTN
220 nF
C19
PVCCR
PVCCR
VCLAMPR
BSRN
NC
NC
AVCC
NC
NC
AGND
AVDD
COSC
ROSC
AGND
VCLAMPL
1 µF
C7
VCC
C13
0.1 µF
C14
220 pF
C6
120 kΩ
1 µF
C8
C16
10 µF
1 µF
R1
PGNDL
PGNDL
LOUTP
LOUTP
PVCCL
PVCCL
BSLP
C20
220 nF
PVCC PVCC
C11
0.1 µF 0.1 µF
C17
10
µF
C24
1 nF
L3
LOUT+
C12
C25
1 nF
L4
LOUT−
LOUTN
LOUTN
PVCCL
C21
220 nF
PVCCL
BSLN
Connected at PowerPad
AGND
PGND
3-2
3.2 EVM PCB Layers
Figure 3−2.TPA3005D2EVM (Top Layer)
Figure 3−3.TPA3005D2EVM (Bottom Layer)
EVM PCB Layers
Reference
3-3
TPA3005D2EVM Parts List
3.3 TPA3005D2EVM Parts List
Table 3−1.TPA3005D2EVM Parts List
Reference Description Size Qty Mfg. Part # Vendor Part #
C1−C5 Capacitor, ceramic,
C6 Capacitor, ceramic,
C7, C8 Capacitor, ceramic,
C9−C13 Capacitor, ceramic,
C14 Capacitor, ceramic,
C15−C17 Capacitor, ceramic,
C18−C21 Capacitor, ceramic,
C22−C25 Capacitor, ceramic,
D1−D4 Do not install SMA 4 Diodes, Inc. B130−13 Digi-Key/B130DITR−ND
J1, J2 Header, 2 position,
J1, J2
(shunts)
L1−L4 Ferrite bead, 0.05 Ω
PnP pins Headers, 0.1 in.
R1−R4 Resistor, chip,
S1 Switch, momentary,
U1 TPA3005D2PHP 48-pin
0.47 µF, +80%/–20%,
Y5V, 16 V
220 pF, ±5%, 50 V
1.0 µF, +80%/–20%,
Y5V, 50 V
0.1 µF, +80%/−20%,
Y5V, 50 V
1.0 µF, +80%/−20%,
Y5V, 50 V
10 µF, +80%/–20%,
Y5V, 25 V
0.22 µF, +80%/−20%,
Y5V, 16V
1000 pF, ±10%, X7R,
50 V
male
SHUNT, 2MM 2mm 2 Specialty 2JM−G
DCR, 70 Ω at
100 MHz, 3A
centers, 1/2 in. long
120 kΩ, 1/16 W, 5%
SMD, low profile
0603 5 Panasonic ECJ−1VF1C474Z Digi-Key/
PCC1792CT−ND
0603 1 Panasonic ECJ−1VC1H221J Digi-Key/
PCC221ACVCT−ND
0805 2 Taiyo Yuden UMK212F105ZG−T TeCal/
UMK212F105ZG-T
0603 5 Panasonic ECJ−1VF1H104Z Digi-Key/
PCC2153CT−ND
0603 1 Murata GRM188F51A105ZA01D Digi-Key/
490-1585-2-ND
1210 3 Panasonic ECJ−4YF1E106Z Digi-Key/
PCC2171CT−ND
0603 4 Panasonic ECJ−1VF1C224Z Digi-Key/
PCC1790CT−ND
0603 4 Panasonic ECJ−1VB1H102K Digi-Key/
PCC1772TR−ND
2mm 2 Norcomp 2163−36−01−P2 Digi−Key/2163S−36−ND
1206 4 Fair−rite 2512067007Y3 Mouser/
623−2512067007Y3
11 Samtec SW−19−8−G−S
0603 4 Panasonic ERJ−3GEYJ124V Digi-Key/
P120KGTR−ND
1 Panasonic EVQ−PPBA25 Digi-Key/
P8086SCT−ND
1 TI TPA3005D2PHP
QFP
3-4
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