User's Guide
SLOU234 – April 2009
TPA2017D2 Audio Power Amplifier EVM
Contents
1 Introduction ................................................................................................................... 1
2 Operation ..................................................................................................................... 2
3 Schematic and Bill of Materials ............................................................................................ 3
List of Figures
1 EVM Schematic .............................................................................................................. 3
2 Top Side Layout.............................................................................................................. 4
3 Bottom Side Layout .......................................................................................................... 4
List of Tables
1 Gain Settings ................................................................................................................. 2
1 Introduction
1.1 Description
The TPA2017D2 is a stereo, filter-free Class-D audio power amplifier with automatic gain control (AGC),
dynamic range compression (DRC). The AGC and DRC functions enhance the perceived audio loudness,
and at the same time prevent speaker damage from overdrive. Availability in the QFN package makes
TPA2017D2 an ideal choice for laptop and portable applications. The TPA2017D2 evaluation module
(EVM) is a complete, stand-alone audio board. It contains the TPA2017D2 QFN (RTJ) Class-D audio
power amplifier.
The TPA2017D2 evaluation module (EVM) is a complete stand-alone audio board. All components are
Pb-free.
1.2 TPA2017D2EVM Specifications
Supply voltage range, V
Supply current, I
Speaker amplifier output power per channel, PO: 4 Ω , V
DD
DD
= 5 V, THD+N = 1% 2 W
DD
4.5 V to 5.5 V
1 A, maximum
SLOU234 – April 2009 TPA2017D2 Audio Power Amplifier EVM 1
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Operation
2 Operation
2.1 Quick-Start List for Stand-Alone Operation
2.1.1 Speaker Amplifier
Follow these steps to use the TPA2017D2EVM stand-alone or when connecting it into existing circuits or
equipment. Connections to the EVM can be made by inserting stripped wire or using banana plugs for the
power supply and output connections. The inputs accept standard RCA plugs.
2.1.2 Power Supply
1. Ensure that all external power sources are set to OFF.
2. Connect an external regulated power supply adjusted to 5 V to the module VDD and GND banana
jacks, taking care to observe marked polarity.
2.1.3 Evaluation Module Preparations
Inputs and Outputs
1. If connecting to a fully differential input or a grounded input (the shield of the RCA is GND), remove
jumpers JP1 and JP2 from the EVM. If connecting to a floating source like a portable CD, install
jumpers JP1 and JP2. After setting the JP1 and JP2 jumpers appropriately, connect the input source to
the speaker left and right inputs (INL and INR) .
2. Connect a speaker across OUTR+ and OUTR-. Connect another speaker across OUTL+ and OUTL-.
Control Inputs
1. Enable: Hold down switch EN to place the amplifier in shutdown. Release EN to reactivate the
amplifier.
2. AGC1/AGC2: Together, these terminals determine the AGC setting of the amplifier. See Table 1 .
Installing the jumpers in position 0 sets the respective terminal to GND. Installing the jumpers in
position 1 sets the respective terminals to VDD.
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2.1.4 Power Up
1. Verify correct voltage and input polarity, and turn on the external power supplies.
The EVM should begin operation.
2. Adjust the input signal.
3. Adjust the control inputs to the desired settings.
4. Adjust the amplifier AGC setting by installing/removing the jumpers, AGC1 and AGC2.
Table 1. Gain Settings
AGC1 AGC2 Function
0 0 AGC Function disabled
0 1 AGC Limiter Function enabled
1 0
1 1
AGC, Limiter, and Compression Functions
AGC, Limiter, Compression, and Noise Gate
Functions enabled
enabled
List of Tables2 SLOU234 – April 2009
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Red
VDD
Black
GND
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
Vdd
QFN
20-RTJ
5
6
11
20
U1
TPA2017D2RTJ
7
8
9
10
15 14 13
12
19
1
8
17
16
4
321
Po
werPad
1 2
EN
1
2
3
RCA (B
lack)
IN
L
1
2
3
INR
RCA (Red)
12
JP1
JP2
2 1
0603
10
0
R1
R2
100
0603
0603
100
R3
R4
100
0603
0603
.047ufd/25V
C
2
C3
.047ufd
/25V
06
03
0603
.
047ufd/25V
C4
C5
.047ufd/25V
0603
0603
1.0ufd/
10V
C6
C7
1.0ufd/10V
0603
0603
1.0ufd/10V
C8
C9
1.0ufd/10V
0603
C1
3
1
.0ufd/10V
0603
0603
1.0ufd/10V
C15
0603100K
R5
0603
0.1ufd/25V
C10
C1
1
0
.1ufd/25V
0603
0603
0.
1ufd/25V
C1
2
C14
0.1ufd/25V
0603
1
2
3
AGC1
1
2
3
AGC2
1206
10u
fd/16V
C1
0.87
5"
0.875"
0.875"
0.875"
1
2
J3
J1
2
1
1
2
J2
0805
100oh
ms/4A
1
2
L1
L2
2
1
100ohms/4A
0
805
0805
100ohms/4A
1
2
L
3
L4
2
1
100ohms/4A
0805
0603
1000pfd/50V
C16
C17
1000p
fd/50V
0603
0603
1000pf
d/50V
C18
C19
1000pfd/50V
0603
0603
1.00K
R6
R7
1.00K
0603
0603
1.00K
R8
R9
1.00K
060
3
0603
4700pf
d/50V
C20
C21
4700
pfd/50V
060
3
0603
4700pfd/50V
C22
C23
4700pfd/50V
0603
W
hite
TP1
TP2
Whi
te
Wh
ite
TP3
TP4
W
hite
OUT
R+
OUTR-
OU
TL-
OUTL+
Blac
k
Black
GND
ON
LY
TESTING
EMI
FOR
J1/J2/J3
B
OM ONLY
GND
IN
PUT
FILTER
S
TANDOFFS
SHUNTS
JP1
JP2
A
GC1 AGC2
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3 Schematic and Bill of Materials
3.1 TPA2017D2EVM Schematic
Schematic and Bill of Materials
SLOU234 – April 2009 List of Tables 3
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Figure 1. EVM Schematic
Schematic and Bill of Materials
3.2 TPA2017D2EVM PCB Layers
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Figure 2. Top Side Layout
List of Tables4 SLOU234 – April 2009
Figure 3. Bottom Side Layout
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Schematic and Bill of Materials
3.3 TPA2017D2EVM Bill of Materials
Description RefDes QTY MFG MFG Part# Vendor Vendor Part#
TI-SEMICONDUCTORS
Stereo AGC Class-D amplifier U1 1 TEXAS INSTRUMENTS TPA2017D2RTJ TPA2017D2RTJ
Description RefDes QTY MFG MFG Part# Vendor Cut Tape Part#
CAPACITORS
CAP 1000PFD 50V CERM 0603 COG ROHS C16, C17, C18, C19 4 TDK CORP. C1608C0G1H102J DIGI-KEY 445-1293-2
CAP 4700PFD 50V CERM 0603 X7R C20, C21, C22, C23 4 PANASONIC ECJ-1VB1H472K DIGI-KEY PCC1780TR
CAP .047UFD 25V CERM 0603 X7R ROHS C2, C3, C4, C5 4 PANASONIC ECJ-1VB1E473K DIGI-KEY PCC1771TR
CAP 0.1UFD 25V CERM 0603 X5R ROHS C10, C11, C12, C14 4 PANASONIC 06033D104KAT2A DIGI-KEY 478-1244-2
CAP 1.0UFD 10V 10% CERM 0603 X5R ROHS C6, C7, C8, C9, C13, C15 6 PANASONIC ECJ-1VB1A105K DIGI-KEY PCC2174TR
CAP 10UFD 16V 10% CERM 1206 X5R ROHS C1 1 KEMET C1206C106K4PACTU DIGI-KEY 399-5091-2
RESISTORS
RES 100 OHM 1/10W 1% SMD 0603 ROHS R1, R2, R3, R4 4 VISHAY CRCW0603100RFKEA DIGI-KEY 541-100HTR
RES 1.00K OHM 1/16W 1% SMD 0603 R6, R7, R8, R9 4 PANASONIC ERJ-3EKF1001V DIGI-KEY P1.00KHTR
RES 100K OHM 1/10W 5% SMD 0603 ROHS R5 1 PANASONIC ERJ-3GEYJ104V DIGI-KEY P100KGTR
FERRITE BEADS
FERRITE BEAD, 100 Ohms 4A 100MHz SM0805 L1, L2, L3, L4 4 TDK CORPORATION MPZ2012S101A DIGI-KEY 445-1567-2
HEADERS AND JACKS
HEADER, 2 PIN MALE, PCB STRAIGHT GOLD
ROHS
HEADER 2 PIN, PCB 2.0MM ROHS JP1, JP2 2 NORCOMP 26630201RP2 DIGI-KEY 2663S-02
HEADER 3 PIN, PCB 2.0MM ROHS AGC1, AGC2 2 NORCOMP 26630301RP2 DIGI-KEY 2663S-03
JACK, RCA, PCB-RA, BLACK INL 1 SWITCHCRAFT PJRAN1X1U01 NEWARK 16C1858
JACK, RCA, PCB-RA, RED INR 1 SWITCHCRAFT PJRAN1X1U03 NEWARK 16C1860
PC Testpoint, Black GND, GND 2 5001 DIGI-KEY 5001K
PC Testpoint, White TP1, TP2, TP3, TP4 4 5002 DIGI-KEY 5002K
Switch, Momentary SMT-Short, Black Tab, 240g EN 1 PANASONIC EVQ-PPDA25 DIGI-KEY P8087STR
BINDING POST, 15A, UNINSULATED 4 111-2223-001 DIGI-KEY J587
BINDING POST, BLACK, 15A ECONO GND 1 7007 DIGI-KEY 7007K
BINDING POST, RED, 15A ECONO VDD 1 7006 DIGI-KEY 7006K
SHUNT, BLACK AU FLASH 2 MM ROHS JP1, JP2, AGC1, AGC2 4 NORCOMP INC. 810-002-SP2L001 DIGI-KEY SP2-001E
Hex Nut, 4-40, Zinc/Steel HW1, HW2, HW3, HW4 4 BUILDING FASTENERS HNZ440 DIGI-KEY H216
Standoff 4-40 Threaded M/F 0.50 in. ALUM-HEX HW1, HW2, HW3, HW4 4 8401 DIGI-KEY 8401K
Component Count: 71
J1, J2, J3 3 SULLINS PBC02SAAN DIGI-KEY S1011E-02
TESTPOINTS AND SWITCHES
KEYSTONE
ELECTRONICS
KEYSTONE
ELECTRONICS
BINDING POSTS
OUTL-, OUTL+, OUTR-, JOHNSON
OUTR+ COMPONENTS
KEYSTONE
ELECTRONICS
KEYSTONE
ELECTRONICS
SHUNTS
STANDOFFS AND HARDWARE
KEYSTONE
ELECTRONICS
TEXAS
INSTRUMENTS
SLOU234 – April 2009 List of Tables 5
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of 4.5 V to 5.5 V and the output voltage range of 0 V to 5.5 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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