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Texas Instruments TPA3112D1 Audio Amplifier Evaluation Module (Rev. A) User guides
User's Guide
SLOU272A – September 2009 – Revised June 2010
TPA3112D1EVM Audio Amplifier Evaluation Board
This user's guide provides the specifications, quick-start list for stand-alone operation, the schematic, bill
of materials, and the board layout for the TPA3112D1EVM evaluation module.
1
2
3
Contents
Introduction ..................................................................................................................
1.1
TPA3112D1EVM Specifications .................................................................................
Operation .....................................................................................................................
2.1
Quick-Start List for Stand-Alone Operation .....................................................................
Schematic, Layout, and Bill of Materials .................................................................................
3.1
TPA3112D1EVM Schematic ......................................................................................
3.2
TPA3112D1EVM PCB Layers ....................................................................................
3.3
TPA3112D1EVM Bill of Materials ................................................................................
2
3
3
3
5
5
6
7
List of Figures
1
TI TPA3112D1EVM Audio Power Amplifier – Top View ............................................................... 2
2
TI TPA3112D1EVM Audio Power Amplifier – Bottom View ........................................................... 2
3
TPA3112D1EVM Schematic............................................................................................... 5
4
TPA3112D1EVM – Top Side Layout ..................................................................................... 6
5
TPA3112D1EVM – Bottom Side Layout ................................................................................. 6
List of Tables
1
Key Parameters ............................................................................................................. 3
2
Power Supply Requirements
3
TPA3112D1 Control Guide ................................................................................................ 4
4
Bill of Materials for TPA3112D1EVM
.............................................................................................
SLOU272A – September 2009 – Revised June 2010
....................................................................................
TPA3112D1EVM Audio Amplifier Evaluation Board
Copyright © 2009–2010, Texas Instruments Incorporated
4
7
1
Introduction
1
www.ti.com
Introduction
The TPA3112D1EVM customer evaluation module (EVM) demonstrates the integrated circuit TPA3112D1
from Texas Instruments.
Figure 1. TI TPA3112D1EVM Audio Power Amplifier – Top View
Figure 2. TI TPA3112D1EVM Audio Power Amplifier – Bottom View
2
TPA3112D1EVM Audio Amplifier Evaluation Board
SLOU272A – September 2009 – Revised June 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Operation
www.ti.com
1.1
TPA3112D1EVM Specifications
Table 1. Key Parameters
Key Parameters
Power Supply Voltage
8 V to 26 V
Number of Channels
1 - Bridge-Tied Load (BTL) Mono
Load Impedance Mono BTL
4 Ω to 8 Ω (connect 33-mH series inductor for 4 Ω or 68-mH inductor for 8 Ω if using the ferrite bead
filters)
Output Power
25 W
2
Operation
2.1
Quick-Start List for Stand-Alone Operation
Follow these steps to use the TPA3112D1EVM stand-alone or when connecting it into existing circuits or
equipment. Connections to the EVM module can be made by inserting stripped wire or banana plugs for
the power supply and output connections. The outputs also can be connected via Molex connectors. The
input connectors are RCA phono jacks.
SLOU272A – September 2009 – Revised June 2010
TPA3112D1EVM Audio Amplifier Evaluation Board
Copyright © 2009–2010, Texas Instruments Incorporated
3
Operation
www.ti.com
Power Supply
A single power supply is required to power up the EVM. Most of the pins are PVCC compliant. The PVCC
supply also can be used to power the analog supply (AVCC) and can be used to pull up the logic pins for
shutdown (SD) control, fault detection (FAULT), and gain (GAIN0 and GAIN1) as long as the voltage slew
rate is limited to 10 V/ms. GVDD is an internally generated supply for the output FETs and also can be
used to power the PLIMIT circuit. PLIMIT is GVDD compliant, but not PVCC compliant. PLIMIT also can
be powered by an external supply connected to the PLIMIT pin. Take care not to power the PLIMIT pin (or
connect power to the GVDD pin inadvertently through the PLIMIT network) when the PVCC supply is
turned off. This can cause damage to the integrated circuit.
Table 2. Power Supply Requirements
Description
Voltage Range
Current Requirements
Minimum Wire Size
PVCC
8 V to 26 V
3A
24 AWG
1. Ensure that the external power source is set to OFF.
2. Connect the external regulated power supply adjusted from 8 V to 26 V to the module PVCC and GND
banana jacks taking care to observe marked polarity.
Evaluation Module Preparations
Inputs and Outputs
1. For a BTL configuration, connect a load across the outputs (OUT+ and OUT-).
2. Connect the audio input, either differential or single-ended, to the IN RCA phono plugs for BTL
operation.
Control Inputs
1. Ensure that the mode jumpers, JP1, JP2, GAIN0, and GAIN1, are set correctly depending on the
desired operating state (Table 3).
Power Up
1. Verify correct voltage and input polarity and turn the external power supplies ON
The EVM begins operation.
2. Adjust the audio source for the desired volume.
Table 3. TPA3112D1 Control Guide
Control
Function
Options
JP1
Allows amplifier to self-reset after
short-circuit protection event
Insert jumper for self-reset.
For latched SC fault, cycle power to reset the fault
Leave off for latched SC fault latch. DC Detect does not recover with SDZ cycle.
PVCC must be cycled to reset DC Detect.
GAIN1/GAIN0
Controls amplifier gain
Insert jumper for zero state
(low). Leave off for one state
(high).
00
01
10
11
JP2
Defeats PLIMIT function and allows
amplifier to run at full power
Insert jumper for PLIMIT
defeat
JP2 connects PLIMIT directly to GVDD
R7
Adjust PLIMIT (an external voltage
also can be applied to the PLIMIT test
point)
Remove JP2 to allow PLIMIT The output voltage rails are limited to
operation.
approximately 4X the voltage at the PLIMIT pin.
Take care not to apply power to PLIMIT when the
PVCC source is off.
JP3, JP4
Connects LC filters to outputs.
4
TPA3112D1EVM Audio Amplifier Evaluation Board
Notes
= 20
= 26
= 32
= 36
dB (GAIN1, GAIN0)
dB
dB
dB
SLOU272A – September 2009 – Revised June 2010
Copyright © 2009–2010, Texas Instruments Incorporated
SLOU272A – September 2009 – Revised June 2010
2
1
2
1
Black
Red
JP5
Copyright © 2009–2010, Texas Instruments Incorporated
2
GND
1.0ufd/16V
0603
C2
1.0ufd/16V
0603
C1
GND
10,1/4W
1206
GND
PLIMIT
1.00K
0603
R6
GND
GND
2
AVCC
1.0ufd/16V
0603
JP2
GND
1.0ufd/16V
0603
1
AGND
Black
C5
3303W
R7
AVCC
GND
FAULT
SD
C4
10K
1.0ufd/35V
0603
C3
2
1
PVCC
15
GND
PowerPad
U1
TPA3112D1PWP
16
14
17
18
19
20
21
22
23
24
25
13
12
11
10
9
8
7
6
GND
GND
GND
1000pfd/50V
0603
C17
Black
GND
Black
GND
R9
GND
0.1ufd/50V
0603
C18
0603
0.47ufd/16V
C14
10 1/4W
0805
R12
10 1/4W
0805
0603
0.47ufd/16V
C9
GND
GND
4
5
0.1ufd/50V
0603
26
C7
1000pfd/50V
0603
27
28
C6
TSSOP28-PWP
U1
3
2
1
C8
C13
FB2
GND
GND
GND
100ufd/35V
VS-D8
C19
PVCC
2
1
5A/80ohms/100MHz
0805
FB2A
75 Ohms@100MHz,5A
28L0138
1000pfd/50V
+
FB1
75 Ohms@100MHz,5A
28L0138
C12
0603
FB1A
2
1
5A/80ohms/100MHz
0805
GND
100ufd/35V
VS-D8
1000pfd/50V
0603
+
PVCC
GND
0603
2
1
1
JP4
JP3
1
2
1
L1
22uH
DS104C2
L2
22uH
DS104C2
OUT
2
GND
0.875in
GND
0.875in
GND
0.875in
2
2
GND
0.875in
STANDOFFS
1000pfd/50V
C25
GND
0603
1000pfd/50V
C10
1
TP2
GND
0.68ufd/50V
1206
C16
GND
0.68ufd/50V
1206
C11
TP1
Red
Red
OUT+
OUT-
TPA3112D1EVM Schematic
3
1
1
PVCC
R5
JP1
R3
100K
0603
3.1
2
R2
100K
0603
R1
PVCC
100K
0603
PVCC
GND
S1
Schematic, Layout, and Bill of Materials
RCA (Red)
GND
GND
PVCC
3
IN
GAIN1
GAIN0
GND
PVCC
TPA3112D1PWP EVALUATION BOARD
www.ti.com
Schematic, Layout, and Bill of Materials
Figure 3. TPA3112D1EVM Schematic
TPA3112D1EVM Audio Amplifier Evaluation Board
5
Schematic, Layout, and Bill of Materials
3.2
www.ti.com
TPA3112D1EVM PCB Layers
Figure 4. TPA3112D1EVM – Top Side Layout
Figure 5. TPA3112D1EVM – Bottom Side Layout
6
TPA3112D1EVM Audio Amplifier Evaluation Board
SLOU272A – September 2009 – Revised June 2010
Copyright © 2009–2010, Texas Instruments Incorporated
Schematic, Layout, and Bill of Materials
www.ti.com
3.3
TPA3112D1EVM Bill of Materials
Table 4. Bill of Materials for TPA3112D1EVM
Item
MANU Part no.
QTY
Ref Designators
Vendor Part No
Description
Vendor
MANU
10-W MONO CLASS-D AUDIO
POWER AMP, TSSOP28-PWP
ROIHS
TEXAS INSTRUMENTS
TEXAS INSTRUMENTS
TI-SEMICONDUCTORS
1
TPA3112D1PWP
1
U1
TPA3112D1PWP
2
C1608C0G1H102J
6
C6,C10,C12,C13,C17,C25
445-1293-1
CAP SMD0603 CERM 1000 pF 50V
5% COG ROHS
DIGI-KEY
TDK CORP.
3
C1608X7R1H104K
2
C7,C18
445-1314-1
CAP SMD0603 CERM 0.1 mF 50V
X7R ROHS
DIGI-KEY
TDK
4
0603YD474KAT2A
2
C9,C14
478-1248-1
CAP SMD0603 CERM 0.47 mF 16V
10% X5R ROHS
DIGI-KEY
AVX
5
C1206C684K5RACTU
2
C11,C16
399-3500-1
CAP SMD1206 CERM 0.68 mF 50V
10% X7R ROHS
DIGI-KEY
KEMET
6
C0603C105K4PACTU
4
C1,C2,C4,C5
399-5090-1
CAP SMD0603 CERM 1.0 mF 16V
10% X5R ROHS
DIGI-KEY
KEMET
7
GMK107BJ105KA-T
1
C3
587-1437-1
CAP SMD0603 CERM 1.0 mF 35V
10% X5R ROHS
DIGI-KEY
TAIYO YUDEN
8
EEE-1VA101XP
2
C8,C19
PCE3951CT
CAP SMD ELECT 100 mF 35V 20%
VS-D8 ROHS
DIGI-KEY
PANASONIC
9
ESR10EZPJ100
2
R9,R12
RHM10KCT
RESISTOR SMD0805 10Ω 1% 1/4W
ROHS
DIGI-KEY
ROHM
10
ERJ-8ENF10R0
1
R5
P10.0FCT
RESISTOR SMD1206 10.0Ω 1%
1/4W ROHS
DIGI-KEY
PANASONIC
11
RC0603FR-071KL
1
R6
311-1.00KHRCT
RESISTOR SMD0603 1.00KΩ 1%
1/10W ROHS
DIGI-KEY
YAGEO
12
3303W-3-103E
1
R7
3303W-103ECT
POT SMD SINGLE TURN
CERMET10K ROHS
DIGI-KEY
BOURNS
13
ERJ-3EKF1003V
3
R1,R2,R3
P100KHCT
RESISTOR SMD0603 100KΩ 1%
1/16W ROHS
DIGI-KEY
PANASONIC
14
HI0805R800R-10
2
FB1A,FB2A
240-2395-1
FERRITE BEAD SMD0805
80Ω@100MHz 5A ROHS
DIGI-KEY
STEWARD
15
28L0138-10R-10
2
FB1,FB2
240-2438-1
FERRITE BEAD THRU RN50
75Ω@100MHz 5A ROHS
DIGI-KEY
STEWARD
16
B952AS-220M
2
L1,L2
B952AS-220M
INDUCTOR SMT 22mH 2.4A 87Ω
20% DS104C2 ROHS
TOKO JAPAN
TOKO JAPAN
17
PBC02SAAN
7
JP1, JP2, JP3, JP4, JP5,
GAIN0, GAIN1
S1011E-02
HEADER 2 PIN MALE, PCB
STRAIGHT GOLD ROHS
DIGI-KEY
SULLINS
CAPACITORS
RESISTORS
FERRITE BEADS AND INDUCTORS
HEADERS AND JACKS
SLOU272A – September 2009 – Revised June 2010
TPA3112D1EVM Audio Amplifier Evaluation Board
Copyright © 2009–2010, Texas Instruments Incorporated
7
Schematic, Layout, and Bill of Materials
www.ti.com
Table 4. Bill of Materials for TPA3112D1EVM (continued)
Item
Ref Designators
Vendor Part No
Description
Vendor
MANU
18
MANU Part no.
22-23-2021
QTY
1
OUT
WM4200
HEADER MALE 2PIN 100LS W/
FRICTION LOCK ROHS
DIGI-KEY
MOLEX
19
PJRAN1X1U03X
1
IN
89K7617
JACK, RCA 3-PIN PCB-RA RED
ROHS
NEWARK
SWITCHCRAFT
20
5004
5
SD, FAULT, PLIMIT, TP1 TP2
5004K
PC TESTPOINT, YELLOW, ROHS
DIGI-KEY
KEYSTONE
ELECTRONICS
21
5001
3
AGND, GND, GND
5001K
PC TESTPOINT, BLACK, ROHS
DIGI-KEY
KEYSTONE
ELECTRONICS
22
TL1015AF160QG
1
S1
EG4344CT
SWITCH, MOM, 160G SMT 4X3MM
ROHS
DIGI-KEY
E-SWITCH
23
3760-2
2
OUT+, OUT-
565-3760-2
BINDING POST, RED 60V/15A TIN
ROHS
MOUSER
POMONA
24
3750-2
1
PVCC
565-3750-2
BINDING POST, RED 60V/15A
GOLD ROHS
MOUSER
POMONA
25
3750-0
1
GND
565-3750-0
BINDING POST, BLACK 60V/15A
GOLD ROHS
MOUSER
POMONA
26
SPC02SYAN
7
JP1, JP2, JP3, JP4, JP5,
GAIN0, GAIN1
S9001
SHUNT, BLACK AU FLASH 0.100LS
DIGI-KEY
SULLINS
27
PMS 440 0025 PH
4
SO1,SO2,SO3,SO4
H342
4-40 SCREW, STEEL 0.250 IN
DIGI-KEY
BUILDING
FASTENERS
28
2030
4
SO1,SO2,SO3,SO4
2030K
STANDOFF, 4-40, 0.875IN x 3/16IN,
ALUM RND F-F
DIGI-KEY
KEYSTONE
TESTPOINTS AND SWITCHES
BINDING POSTS
SHUNTS
STANDOFFS AND HARDWARE
COMPONENTS NOT ASSEMBLED
FB1, FB2
COMPONENTS MISSING FROM SEQUENCE
C15, C20-C24, R4, R8, R10, R11
8
TPA3112D1EVM Audio Amplifier Evaluation Board
SLOU272A – September 2009 – Revised June 2010
Copyright © 2009–2010, Texas Instruments Incorporated
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. As such, the goods being provided are
not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations,
including product safety and environmental measures typically found in end products that incorporate such semiconductor
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electromagnetic compatibility, restricted substances (RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the
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Should this evaluation board/kit not meet the specifications indicated in the User’s Guide, the board/kit may be returned within 30
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Please read the User’s Guide and, specifically, the Warnings and Restrictions notice in the User’s Guide prior to handling the
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This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION
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EVM Warnings and Restrictions
It is important to operate this EVM within the input voltage range of -0.3 V to 6.3 V and the output voltage range of -0.3 V to 30 V .
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 85° C. The EVM is designed to
operate properly with certain components above 85° 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.
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