Texas Instruments TPA3220 User manual

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TPA3220 Evaluation Module Micro
ADVANCE INFORMATION
User's Guide
SLAU756–January 2018
TPA3220 Evaluation Module Micro
This user's guide describes the characteristics, operation, and use of the TPA3220 Evaluation Module
Micro. A complete printed-circuit board (PCB) description, schematic diagram, and bill of materials (BOM)
are also included.

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Contents
1 Quick Start (BTL MODE) ................................................................................................... 3
2 Setup By Mode .............................................................................................................. 5
3 Hardware Configuration .................................................................................................... 7
4 EVM Design Documents ................................................................................................. 13
5 Schematic and Bill of Materials........................................................................................... 15
List of Figures
1 Output Configuration BTL .................................................................................................. 3
2 EVM Board (Top Side) ..................................................................................................... 4
3 EVM Board (Bottom Side) ................................................................................................. 4
4 Output Configuration PBTL - 4 Inductors................................................................................. 5
5 Filter Frequency Response .............................................................................................. 11
6 TPA3220EVM-Micro Top Composite Assembly ....................................................................... 13
7 TPA3220EVM-Micro Bottom Composite Assembly ................................................................... 13
8 TPA3220EVM-Micro Board Dimensions ................................................................................ 14
9 TPA3220EVM-MICRO Schematic 1..................................................................................... 15
10 TPA3220EVM-MICRO Schematic 2..................................................................................... 16
List of Tables
1 Jumper and Switch Configurations (BTL Mode)......................................................................... 4
2 Jumper and Switch Configurations (PBTL Mode)....................................................................... 6
3 Fault and Clip Overtemperature Status .................................................................................. 7
4 Frequency Adjust Master Mode Selection ............................................................................... 7
5 HEAD and AD Mode Selection ............................................................................................ 8
6 Output Mode and Modulation Mode Selection........................................................................... 8
7 Default Mode Configuration ............................................................................................... 9
8 LDO Mode Configuration .................................................................................................. 9
9 Non-5-V Supply Configuration ........................................................................................... 10
10 External 5-V Supply Mode Configuration .............................................................................. 10
11 AIB Connector (J3) Pinout ............................................................................................... 12
12 Bill of Materials ............................................................................................................. 17
Trademarks
CoilCraft is a trademark of CoilCraft, Inc.
All other trademarks are the property of their respective owners.

Class-D
Amplifier
OUT-A
OUT-B
OUT-C
OUT-D
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1 Quick Start (BTL MODE)
The following section describes the necessary hardware, connections, configuration, and steps to quick
start the EVM into BTL mode with stereo audio playing out of two speakers.
Figure 1 illustrates the BTL mode output configuration
Figure 1. Output Configuration BTL
1.1 Required Hardware
The following hardware is required for this EVM:
• TPA3220EVM-Micro
• Power supply 5–14 A, 12–30 VDC
• Two 2–8 Ωspeaker or resistor loads (ensure speaker or load is appropriately sized for required
wattage output)
• Four 12–20 AWG wires
• One XLR to 3.5-mm audio jack
• Analog output audio source

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1.2 Connections and Board Configuration
Figure 2 and Figure 3 illustrate the top and bottom of the EVM.
Figure 2. EVM Board (Top Side) Figure 3. EVM Board (Bottom Side)
Use the following steps when connecting and configuring the board in BTL MODE:
1. Ensure the power supply is OFF. Connect the power supply positive terminal to J6 PVDD and negative
terminal to J6 GND.
2. Connect the left channel speaker, power resistor load (3–8 Ω) to the TPA3220EVM-Micro positive
output terminal (J4 OUT1+) and other side of the speaker, power resistor to the TPA3220EVM-Micro
negative output terminal (J4 OUT1–).
3. Connect the right channel speaker, power resistor load (3–8 Ω) to the TPA3220EVM-Micro positive
output terminal (J5 OUT2+) and other side of the speaker, power resistor to the TPA3220EVM-Micro
negative output terminal (J5 OUT2–).
4. Check to make sure that the power supply is only connected to J6 and speakers are connected to J4
or J5 only, as their colors are the same.
5. Input Configuration:
a. Differential Inputs: Depopulate R3 and R13
b. Single-Ended Inputs: Populate R3 and R13
c. Audio Interface Board Input: Populate R1, R2, R11, and R12
6. Ensure that RESET S1 is in the lower position of RESET.
7. Check Table 1 for all necessary jumper and switch configurations.
Table 1. Jumper and Switch Configurations (BTL Mode)
Component Component Description Configuration for BTL
R28, R31 Gain/SLV Select MSTR-34dB
R3, R13 Input DIFF or SE Select SE = Populate
DIFF = Remove
R1, R2, R11,
R12 AIB Input Select Populated
R27, R29 HEAD or AD Mode Select HEAD = Populate R27, Remove R29
AD = Remove R27, Populate R29
R22, R26 PBTL or BTL Select Remove
S1 RESET Control RESET
R25 FREQ_ADJ MASTER MODE = 480kHz

Class-D
Amplifier
OUT-A
OUT-B
OUT-C
OUT-D
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1.3 Power-Up
Ensure that required connections and configurations have been checked. The TPA3220EVM-Micro board
can now be powered on.
1. Enable the power supply at 12 V to 30 V and ensure that LED D2 illuminates. LEDs D1 and D3 should
not be illuminated.
2. Switch S1 out of RESET. The FAULT LED (D1) should blink once quickly, then remain unilluminated.
3. Note that the EVM does not have volume control, configure your analog input for a reasonable audio
level before beginning audio playback.
4. Enable audio input playback and the EVM should begin driving audio out of the left and right speakers.
If resistor loads are used for testing instead of speakers, they will now be energized.
2 Setup By Mode
The following sections describe the setup and configuration for each output mode. The TPA3220DDV
EVM-Micro allows for two output modes: Stereo BTL and Mono PBTL.
2.1 BTL MODE (Stereo - 2 Speaker Outputs)
This mode is the same as described in Quick Start (BTL MODE) .
2.2 PBTL MODE (Mono – 1 Speaker Output)
This mode provides one speaker output that is more powerful than each BTL output and is useful when
mono audio is to be played or when more power is needed.
Figure 4 illustrates the PBTL mode output configuration with 4 inductors.
Figure 4. Output Configuration PBTL - 4 Inductors
2.2.1 Connections and Board Configuration
Use the following steps when connecting and configuring the board in BTL MODE:
1. Ensure the power supply is OFF. Connect the positive terminal of the power supply to J6 PVDD and
negative terminal to J6 GND.
2. Connect one channel speaker, power resistor load (2–8 Ω) to the TPA3220EVM-Micro positive output

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terminal (J4 OUT1+) and other side of the speaker, power resistor to the TPA3220EVM-Micro negative
output terminal (J4 OUT1–).
3. Use a wire to connect J5 OUT2+ to J4 OUT1+, then use another wire to connect J5 OUT2– to J4
OUT1–. This forms a parallel connection of both OUTx+ to one side of the speaker and a parallel
connection of both OUTx– to the other side of the speaker.
4. Check to make sure that the power supply is connected to J6 only and speakers are connected to J4
or J5 only, as their colors are the same.
5. Input Configuration:
a. Differential Inputs: Depopulate R3 and R13
b. Single-Ended Inputs: Populate R3 and R13
c. Audio Interface Board Input: Populate R1, R2, R11, and R12
6. Ensure that RESET S1 is in the lower position of RESET.
7. Check Table 2 for all jumper and switch configurations necessary.
Table 2. Jumper and Switch Configurations (PBTL Mode)
Component Component Description Configuration for PBTL
R28, R31 Gain/SLV Select MSTR-34dB
R3, R13 Input DIFF or SE Select SE = Populate
DIFF = Remove
R1, R2, R11, R12 AIB Input Select Populated
R27, R29 HEAD or AD Mode Select HEAD = Populate R27, Remove R29
AD = Remove R27, Populate R29
R22, R26 PBTL or BTL Select Populate
S1 RESET Control RESET
R25 FREQ_ADJ MASTER MODE = 480 kHz
2.2.2 Power-Up
Ensure that required connections and configurations have been checked. The TPA3220EVM-Micro board
can now be powered on.
1. Enable the power supply at 12 V to 30 V and ensure that LED D2 illuminates. LEDs D1 and D3 should
not be illuminated.
2. Switch S1 out of RESET. The FAULT LED (D1) should blink once quickly, then remain unilluminated.
3. Note that the EVM does not have volume control, configure your analog input for a reasonable audio
level before beginning audio playback.
4. Enable audio input playback and the EVM should begin driving audio out of the left and right speakers.
If resistor loads are used for testing instead of speakers, they will now be energized.

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3 Hardware Configuration
3.1 Indicator Overview (CLIP_OTW and FAULT)
The TPA3220EVM-Micro is equipped with LED indicators that illuminate when the FAULT or CLIP_OTW
pin goes low. See Table 3 and TPA3220 100-W Peak HD-Audio, Analog-Input, Class-D for more details.
Table 3. Fault and Clip Overtemperature Status
FAULT LED
Status CLIP_OTW LED Status Description
ON ON Overtemperature (OTE) or overload (OLP) or undervoltage (UVP). Junction
temperature higher than 125°C (OTE warning)
ON OFF Overload (OLP) or undervoltage (UVP). Junction temperature lower than 125°C
OFF ON Junction temperature higher than 125°C (OTE warning)
OFF OFF Junction temperature lower than 125°C and no OLP or UVP faults (normal
operation)
3.2 PWM Frequency Adjust
The TPA3220EVM-Micro allows for three oscillator frequency options by external configuration of the
FREQ_ADJ pin. The frequency adjust can be used to reduce interference problems while using a radio
receiver tuned within the AM band. These values should be chosen such that the nominal and the lower
value switching frequencies together results in the fewest cases of interference throughout the AM band.
The oscillator frequency can be selected by the value of the FREQ_ADJ resistor connected to GND in
master mode according to Table 4.
Table 4. Frequency Adjust Master Mode Selection
FREQ_ADJ (R25, R) Resistor Value PWM Frequency
Master MODE 49.9 kΩ600 kHz
Master MODE 30 kΩ533 kHz
Master MODE 10 kΩ480 kHz
Slave MODE Pull up to 5 V N/A
Selecting Slave Mode configures the OSC_I/O pins as inputs to be slaved from an external differential
clock. In a master or slave system, interchannel delay is automatically set up between the switching
phases of the audio channels, which can be illustrated by no idle channels switching at the same time.
This will not influence the audio output, but only the switch timing to minimize noise coupling between
audio channels through the power supply. This will optimize audio performance and result in better
operating conditions for the power supply. The inter-channel delay will be set up for a slave device
depending on the polarity of the OSC_I/O connection such that slave mode 1 is selected by connecting
the OSC_I/O of the master device with the OSC_I/O of the slave device with the same polarity (+ to +
and – to –), while slave mode 2 is selected by connecting the OSC_I/Os with the inverse polarity (+ to –
and – to +).
3.3 Modulation Modes (AD Mode and HEAD Mode)
The TPA3220EVM-Micro supports both AD modulation as well as HEAD modulation. In AD mode, each of
the two half-bridge outputs are continuously switching. AD mode is the default mode for the
TPA3220EVM-Micro. The EVM also supports HEAD mode modulation. HEAD mode also switches both
half-bridge outputs but also optimizes the switching for lower power loss at idle as well as increased EMI
performance at cost of some performance. The device accomplishes this by reducing its duty cycle at idle
and while playing small signals. At higher output levels HEAD mode will also reduce the switching on one
of the half bridges. The modulation mode can be controlled through jumper J6 on the EVM as follows:

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Table 5. HEAD and AD Mode Selection
Resistors State (R27, R29) Modulation Mode
R27 = Populate, R29 = Remove AD Mode
R27 = Remove, R29 = Populate HEAD Mode
More information on the differences between HEAD mode and AD mode as well as performance data is
found in TPA3220 100-W Peak HD-Audio, Analog-Input, Class-D .
3.4 Output Mode Selection
The TPA3220 does not use discrete mode pins and therefore relies solely on the states of the IN2_M and
IN2_P pins. Connecting the IN2_M and IN2_P pins to regular high output impedance audio outputs by
removing J7 and J8 puts the TPA3220 into BTL mode (2 × stereo outputs). Tying the IN2_M and IN2_P
pins to GND by populating R22 and R26 puts the TPA3220 into PBTL mode (1 × mono output). This is
summarized in Table 6:
Table 6. Output Mode and Modulation Mode Selection
Input Resistors
R22 and R26 Input Mode Output
Configuration Description
IN2_M IN2_P
OUT OUT 1N / 2N + 1 2 × BTL Stereo BTL output configuration
IN IN 1 × PBTL Mono paralleled BTL configuration. Connect OUT1+ to OUT2+
and OUT1– to OUT2–.
3.5 EVM Power Tree
The TPA3220EVM-Micro includes a few options for power configuration so that various input types can be
evaluated.
3.5.1 TPA3220 Supplies
The TPA3220 device has a few power supplies which each have their own voltage range and rules.
Details for each supply are as shown:
•PVDD – This is the main device supply which accepts from 7 V to 30 V. Power output of the device is
derived solely from PVDD and therefore it is important to configure this supply according to the chosen
output configuration and load. Complete details are included in TPA3220 100-W Peak HD-Audio,
Analog-Input, Class-D .
•VDD – This supply is used for the non-PVDD power of the device for blocks such as the front-end and
control circuitry. The TPA3220 internal 5-V LDO is also powered by this pin. VDD can be powered by 5
V directly if using the TPA3220 with the internal regulator OFF. In this case, tie the GVDD and AVDD
pins directly to VDD through R18 and remove R16. When the internal regulator is used, VDD must be
between 7 V and PVDD through R16. GVDD and AVDD are only 5-V tolerant, so R18 must be
removed.
•GVDD and AVDD – These pins are used for the gate drive and analog supply of the device. These
pins accept only 5 V. When the internal regulator is used, these pins are fed internal to the device, no
external connection is necessary. When the internal regulator is OFF.

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3.5.2 TPA3220EVM-Micro Power Options
3.5.2.1 Default Mode
This is the default configuration of TPA3220EVM-Micro. In this configuration, the TPA3220 utilizes the
onboard buck converter to bring down PVDD to 5 V.
Table 7 shows how to configure TPA3220EVM-Micro into this mode.
Table 7. Default Mode Configuration
Component Component Description Configuration for LDO Mode
R16 PVDD to VDD Connector Populate
R18 5 V to VDD Connector Remove
R14 5 V to GVDD Connector Populate
D4 Buck Input Component Populate
L4, C31, R38 Buck Output Components Populate
R40 Voltage Divider for RESET Remove
3.5.2.2 PVDD Only (12 V to 30 V) LDO Mode
This power mode is the default setup when the board is tested and shipped. The user can connect any
valid supply voltage to J1 and the onboard LDOs will generate the required non-PVDD voltages. PVDD
itself always connects directly to the TPA3220 PVDD pins. Setup for this mode is the same as described
in Quick Start (BTL MODE) .
Table 8 shows how to configure the TPA3220EVM-Micro into this mode.
Table 8. LDO Mode Configuration
Component Component Description Configuration for LDO Mode
R16 PVDD to VDD Connector Populate
R18 5 V to VDD Connector Remove
R14 5 V to GVDD Connector Populate
D4 Buck Input Component Remove
L4, C31, R38 Buck Output Components Remove
R40 Voltage Divider for RESET Remove
3.5.2.3 PVDD (12 V to 30 V) and One Non-5-V Supply
This power mode is useful for certain applications where a system has one higher voltage used for PVDD
and a second lower voltage that may be used for device pullups and other supplies (VDD, GVDD, and
AVDD).
Special consideration must be taken for the RESET pin. The RESET pin needs to have a 5-V input. In
order to do this R40 must be installed to create a voltage divider network that will drop the voltage down to
5 V.

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Table 9 shows how to configure TPA3220EVM-Micro into this mode.
Table 9. Non-5-V Supply Configuration
Component Component Description Configuration for External Non-5-V
Mode
R16 PVDD to VDD Connector Populate
R18 5 V to VDD Connector Remove
R14 5 V to GVDD Connector Remove
D4 Buck Input Component Remove
L4, C31, R38 Buck Output Components Remove
R40 Voltage Divider for RESET Populate
3.5.2.4 PVDD (12 V to 30 V) and External 5-V Supply
This power mode is most useful for systems in which a 5-V supply is already available due to additional
circuitry like an MCU or wireless module. On the EVM, this is also the preferred way to measure efficiency
of the TPA3220 device.
Table 10 shows how to configure TPA3220EVM-Micro into this mode.
Table 10. External 5-V Supply Mode Configuration
Component Component Description Configuration for External 5-V
Mode
R16 PVDD to VDD Connector Remove
R18 5 V to VDD Connector Populate
R14 5 V to GVDD Connector Populate
D4 Buck Input Component Remove
L4, C31, R38 Buck Output Components Remove
R40 Voltage Divider for RESET Remove

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3.6 LC Response and Overview
Included near the output of the TPA3220 device are four output LC filters. These output filters filter the
pulse-width modulation (PWM) output, leaving only the audio content at high power, which is fed to the
speakers. The board uses a CoilCraft™ 7-µH inductor and a 0.68-µF film capacitor to form this LC filter.
Using the equations listed in LC Filter Design , the low-pass filter cutoff is calculated as follows in
Equation 1:
(1)
Figure 5. Filter Frequency Response
3.7 Reset Circuit and POR
The TPA3220EVM-Micro includes RESET supervision so that the TPA3220 device will remain in reset
until all power rails are up and stable. The RESET supervisor also ensures that the device will be put into
reset if one of the power rails experiences a brown out. This circuit, combined with the RESET switch (S1)
help ensure that the TPA3220 can be placed in reset easily, as needed, or automatically if there is a
power supply issue.

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3.8 Analog-Input-Board Connector (J3)
The Analog-Input-Board (AIB) connector allows for cross compatibility with several Analog Plug-in
Modules (APMs) offered by TI. This generic connector provides access to common board connections
such as analog input, analog output, Fault and overtemperature warning (OTW) error reporting, common
board voltages (12 V, 3.3 V, and so forth), and EVM reset. These plug-in modules allow for an application-
specific front end to be plugged into the TPA3220EVM-Micro with ease. Examples of plug-in modules
include front ends for guitar amplifier, karaoke, wireless sub-woofer, and front-end audio crossover.
Table 11 provides the details for the AIB connector pinouts.
Table 11. AIB Connector (J3) Pinout
Pin # Function Description Audio EVM
Input/Output
1 Amp Out A Speaker-level output from audio class-D EVM (SE or one side of BTL) O
2 Amp Out B Speaker-level output from audio class-D EVM (SE or one side of BTL) O
3 PVDD PVDD voltage supply from audio Class-D EVM (variable voltage depending on
Class-D EVM use) O
4 GND Ground reference between audio plug-in module and audio class-D EVM -
5 NC - -
6 NC - -
7 3.3 V 3.3-V supply from EVM; used for powering Audio Plug-in Module O
8 3.3 V 3.3-V supply from EVM; used for powering Audio Plug-in Module O
9 12 V 12-V supply from EVM; used for powering Audio Plug-in Module O
10 EN and RESET Assert enable and reset control for audio class-D EVM (active low) I
11 Analog IN_A Analog audio Input A (analog in EVM), Data In I2S Bus (digital in EVM) I
12 NC - -
13 Analog IN_B Analog audio Input B (analog in EVM), Data In I2S Bus (digital in EVM) I
14 CLIP_OTW Clipping detection, overtemperature warning, or both from audio class-D EVM
(active low) O
15 Analog IN_C Analog audio Input C (analog in EVM), Data In I2S Bus (digital in EVM) I
16 FAULT Fault detection from audio Class-D EVM (Active Low) O
17 Analog IN_D Analog audio Input D (analog in EVM), Data In I2S Bus (digital in EVM) I
18 NC - -
19 NC - -
20 NC - -
21 GND Ground reference between audio plug-in module and audio class-D EVM -
22 GND Ground reference between audio plug-in module and audio class-D EVM -
23 NC - -
24 NC - -
25 NC - -
26 NC - -
27 Amp Out C Speaker-level output from audio class-D EVM (SE or one side of BTL) O
28 Amp Out D Speaker-level output from audio class-D EVM (SE or one side of BTL) O

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4 EVM Design Documents
This section contains the EVM board layouts, schematics, and bill of materials (BOM).
4.1 TPA3220EVM-Micro Board Layouts
Figure 6 and Figure 7 illustrate the EVM board layouts.
Figure 6. TPA3220EVM-Micro Top Composite Assembly
Figure 7. TPA3220EVM-Micro Bottom Composite Assembly

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4.2 TPA3220EVM-Micro Board Layouts
Figure 8 shows the EVM board dimensions.
Image shown is not actual scale.
Figure 8. TPA3220EVM-Micro Board Dimensions

IN1P
IN2P
AUDIO
BOARD
IN2+_AIB
IN1-_AIB
IN1+_AIB
FROM DUT OTW_CLIP
FAULT
GND
ALIGNMENT
HEADER
AIB
RESET-SW
RESET
INTERFACE
RST-AIB
3.3V
GND GND
PVDD
TO DUT
TO DUT
1
3
56
4
2
7
910
8
12 11
14 13
16 15
18 17
20 19
22 21
24 23
26 25
28 27
J3
3.3V IN2+_HPJ
IN1+_HPJ
3
2
1
J1
SJ-3523-SMT
GND
GND
IN2M TO DUT
GND
IN1M TO DUT
GND
IN2-_AIB
3.3V
5V
1
2
J2
1.00k
R6 0R4DNP
10.0k
R10
100k
R7
100k
R8
0
R3
0
R13
0R5
0R9
0R1DNP
0R2DNP
0R11
DNP
0R12
DNP
1uF
C1
1uF
C2
1uF
C3
1uF
C4
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5 Schematic and Bill of Materials
This section contains the EVM schematic images and the BOM.
5.1 Schematic
Figure 9 and Figure 10 illustrate the EVM schematics.
Figure 9. TPA3220EVM-MICRO Schematic 1

GNDGND GND
GND
VCC 9
SS
7
SW 1
FB 6 RTN
5
VIN
10
BST 2
RON/SD
8
DAP 11
ISEN 3
SGND
4
U2
LM5010ASD/NOPB
PVDD
5V
GND
GND
GND
GND
3.3V
OUTPUT 2
GND 1
IN
3
OUTPUT 4
U3
TLV1117-33IDCY
GND
5V
PVDD
1
2
J6
GND GND
GND
Green
D2
5V
5V
GND
PVDD
GND
PVDD
GNDGND
GNDGND
RESET
GND
GVDD
GND
IN1_P
IN1_M
IN2_M
IN2_P
VDD
GVDD
GND
GND
6
4
5
13
S1
RESET
GND
RESET-SW RESET
TO AIB
RESET-SW
AVDD
GND
HEAD
GAIN/SLV
VDD
AVDD
GAIN/SLV
GND
MSTR-30dB
AVDD
PVDD
GVDD
5V
5V
5V
IN1P
IN1M
IN2P
IN2M
FROM ANALOG
IN1_P
IN1_M
IN2_P
IN2_M
FRONT END
GND
GND
GND
GND
GND
GND
5V
5V
GND
VDD
1
CMUTE
17
IN1_P
8
IN1_M
9
FREQ_ADJ 14
OSCM
12
OSCP
13
GND 5
GND 6
AVDD
21
HEAD
11
IN2_P
15
IN2_M
16
RESET
10
FAULT 4
GAIN/SLV
2
OTW_CLIP 3
GVDD
22
BST1_P 44
BST1_M 43
BST2_M 23
BST2_P 24
GND 42
GND 41
GND 25
GND 26
GND 34
GND 33
OUT1_P 40
OUT1_P 39
OUT1_M 35
OUT2_P 32
OUT2_M 27
OUT2_M 28
PVDD
38 PVDD
37 PVDD
36
PVDD
31 PVDD
30 PVDD
29
GND 18
GND 19
GND 20
GND 7
GND 45
TPA3220DDWR
U1
GND
GND
OUT2_M
OUT1_P
OUT1_M
FAULT
OTW_CLIP
OUT2_P
FREQ_ADJ
5V
Orange
D3
CLIP_OTW
MONITORS
FAULT
TO AIB
OTW_CLIP
FAULT
Red
D1
FAULT
CLIP_OTW
5V
OUT2_M
OUT2_P
1
2
J5
GND GND
OUT1+
OUT1_P
OUT1_M
OUT1- 1
2
J4
GND GND
21
4 3
7µH
L1
21
4 3
7µH
L3
1000µF
C12
1000µF
C7
0.68µF
C17
0.68µF
C18
0.68µF
C24
0.68µF
C25
100µH
L4
OUT2+
OUT2-
100uF
C33
0R36
DNP 0R37 DNP
100pF
C23
100pF
C22
100pF
C15
100pF
C9
0.1uF
C13
0.1uF
C8
0.1uF
C19
0.033uFC14
0.033uFC16
0.033uFC20
0.033uFC21
0.047uF
C28
50V
1uF
C5
50V
1uF
C6
50V
1uF
C10
50V
1uF
C11
0.1uF
C38
50V
50V
1uF
C37
0.033uF
C26
D4
3A
0.1uF
C30
0R18
0R16
DNP
0R14
10uH
L2
5600pF
C31
D5
1A
47.0k
R27
50V
2.2uF
C29
50V
10uF
C35
50V
10uF
C36
10uF
C32
100
R24
100
R21
100
R17
100
R15
0
R29
DNP
0
R26
DNP
0
R23
DNP
0
R22
DNP
0
R20
DNP
47.0k
R32
1.00k
R38
1.00k
R39
499
R33
3.32
R19
820
R30
820
R34
10.0k
R25
0.47uF
C27
0.022uF
C34
0
R40
DNP
GND
39.0k
R31
100k
R28
121k
R35
Copyright © 2018, Texas Instruments Incorporated
Schematic and Bill of Materials www.ti.com
16 SLAU756–January 2018
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TPA3220 Evaluation Module Micro
ADVANCE INFORMATION
Figure 10. TPA3220EVM-MICRO Schematic 2

www.ti.com Schematic and Bill of Materials
17
SLAU756–January 2018
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TPA3220 Evaluation Module Micro
ADVANCE INFORMATION
5.2 Bill of Materials
Table 12 displays the EVM BOM.
Table 12. Bill of Materials
Designator Qty Value Description Package Reference Part Number Manufacturer
!PCB1 1 Printed Circuit Board AMPS037 Any
C1, C2, C3, C4 4 1uF CAP, CERM, 1 uF, 16 V, ±10%, X7R, 0603 0603 EMK107B7105KA-T Taiyo Yuden
C5, C6, C10, C11, C37 5 1uF CAP, CERM, 1 uF, 50 V, ± 10%, X7R, 0603 0603 UMK107AB7105KA-T Taiyo Yuden
C7, C12 2 1000uF CAP, AL, 1000 µF, 50 V, ±20%, TH D13xL25mm 860010678024 Wurth Elektronik
C8, C13, C19, C30, C38 5 0.1uF CAP, CERM, 0.1 uF, 50 V, ±10%, X7R, 0603 0603 C0603C104K5RACTU Kemet
C9, C15, C22, C23 4 100pF CAP, CERM, 100 pF, 50 V, ±5%, C0G/NP0, 0603 0603 GRM1885C1H101JA01D Murata
C14, C16, C20, C21, C26 5 0.033uF CAP, CERM, 0.033 uF, 25 V, ±10%, X7R, 0603 0603 GRM188R71E333KA01D Murata
C17, C18, C24, C25 4 0.68uF CAP, Film, 0.68 µF, 40 VAC/63 VDC,±10%, AEC-Q200 Grade 1, 2220
SMD 2220 LDEDD3680KA5N00 Kemet
C27 1 0.47uF CAP, CERM, 0.47 uF, 25 V, ±10%, X5R, 0603 0603 GRM188R61E474KA12D Murata
C28 1 0.047uF CAP, CERM, 0.047 uF, 25 V, ±10%, X7R, 0402 0402 GRM155R71E473KA88D Murata
C29 1 2.2uF CAP, CERM, 2.2 uF, 50 V, ±10%, X5R, 0603 0603 GRM188R61H225KE11D Murata
C31 1 5600pF CAP, CERM, 5600 pF, 50 V, ±10%, X7R, 0603 0603 GRM188R71H562KA01D Murata
C32 1 10uF CAP, CERM, 10 uF, 16 V, ±20%, X5R, 0603 0603 GRM188R61C106MAALD Murata
C33 1 100uF CAP, CERM, 100 uF, 6.3 V, ±20%, X5R, 1206 1206 GRM31CR60J107ME39L Murata
C34 1 0.022uF CAP, CERM, 0.022 uF, 50 V, ±10%, X7R, 0603 0603 C0603C223K5RACTU Kemet
C35, C36 2 10uF CAP, CERM, 10 uF, 50 V, ±10%, X5R, 1206 1206 GRM31CR61H106KA12L Murata
D1 1 Red LED, Red, SMD Red 0805 LED LTST-C170KRKT Lite-On
D2 1 Green LED, Green, SMD LED_0805 LTST-C171GKT Lite-On
D3 1 Orange LED, Orange, SMD LED_0805 LTST-C170KFKT Lite-On
D4 1 100V Diode, Schottky, 100 V, 3 A, SMA SMA SK310A-TP Micro Commercial
Components
D5 1 100V Diode, Schottky, 100 V, 1 A, SMA SMA B1100-13-F Diodes Inc.
H1, H2, H3, H4 4 Bumpon, Hemisphere, 0.44 X 0.20, Clear Transparent Bumpon SJ-5303 (CLEAR) 3M
J1 1 Audio Jack, 3.5mm, Stereo, R/A, SMT Audio Jack SMD SJ-3523-SMT CUI Inc.
J2 1 Header, 100mil, 2x1, Gold, TH Sullins 100mil, 1x2, 230 mil
above insulator PBC02SAAN Sullins Connector Solutions
J3 1 Receptacle, 100mil, 14x2, Gold, TH 14x2 Receptacle SSW-114-01-G-D Samtec
J4, J5, J6 3 Terminal Block, 2x1, 5mm, Green, TH Terminal Block, 2x1, 5mm, TH 1935776 Phoenix Contact
L1, L3 2 7uH Inductor, Shielded, Ferrite, 7 µH, 6.5 A, .0066 ohm, AEC-Q200 Grade 1,
SMD 15.5x14mm UA8013-ALD Coilcraft
L2 1 10uH Inductor, Wirewound, 10 uH, 0.08 A, 0.36 ohm, SMD 0603 GLFR1608T100M-LR TDK
L4 1 100uH Inductor, Shielded, Ferrite, 100 µH, 0.9 A, 0.611 ohm, SMD 6x6m VLS6045EX-101M TDK
R3, R5, R9, R13 4 0 RES, 0, 5%, 0.1 W, 0603 0603 ERJ-3GEY0R00V Panasonic
R6 1 1.00k RES, 1.00 k, 1%, 0.1 W, 0402 0402 ERJ-2RKF1001X Panasonic

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ADVANCE INFORMATION
Table 12. Bill of Materials (continued)
Designator Qty Value Description Package Reference Part Number Manufacturer
R7, R8 2 100k RES, 100 k, 1%, 0.0625 W, 0402 0402 RC0402FR-07100KL Yageo America
R10 1 10.0k RES, 10.0 k, 1%, 0.1 W, 0402 0402 ERJ-2RKF1002X Panasonic
R14, R18 2 0 RES, 0, 5%, 0.125 W, 0805 0805 ERJ-6GEY0R00V Panasonic
R15, R17, R21, R24 4 100 RES, 100, 1%, 0.1 W, 0603 0603 RC0603FR-07100RL Yageo America
R19 1 3.32 RES, 3.32, 1%, 0.1 W, 0603 0603 RC0603FR-073R32L Yageo America
R25 1 10.0k RES, 10.0 k, 1%, 0.1 W, 0603 0603 ERJ-3EKF1002V Panasonic
R27, 1 47.0k RES, 47.0 k, 1%, 0.1 W, 0603 0603 RC0603FR-0747KL Yageo America
R28 1 100k RES, 100 k, 0.5%, 0.1 W, 0603 0603 RT0603DRE07100KL Yageo America
R30, R34 2 820 RES, 820, 1%, 0.063 W, 0402 0402 RC0402FR-07820RL Yageo America
R31 1 39.0k RES, 39.0 k, 1%, 0.1 W, 0603 603 RC0603FR-0739KL Yageo America
R32 1 47.0k RES, 47.0 k, 1%, 0.0625 W, 0402 0402 RC0402FR-0747KL Yageo America
R33 1 499 RES, 499, 0.1%, 0.063 W, AEC-Q200 Grade 0, 0402 0402 ERA-2AEB4990X Panasonic
R35 1 121k RES, 121 k, 1%, 0.125 W, 0805 0805 ERJ-6ENF1213V Panasonic
R38, R39 2 1.00k RES, 1.00 k, 1%, 0.1 W, 0603 0603 RC0603FR-071KL Yageo America
S1 1 Switch, SPDT, On-On, 2 Pos, TH Switch, 7x4.5mm 200USP1T1A1M2RE E-Switch
U1 1 35-W Stereo, 100-W Peak HD-Audio, Analog-Input, Class-D Amplifier,
DDW0044D (TSSOP-44) DDW0044D TPA3220DDWR Texas Instruments
U2 1 High Voltage 1A Step Down Switching Regulator, 10-pin LLP, Pb-Free SDC10A LM5010ASD/NOPB Texas Instruments
U3 1 FIXED LOW-DROPOUT VOLTAGE REGULATOR, DCY0004A DCY0004A TLV1117-33IDCY Texas Instruments
FID1, FID2, FID3 0 Fiducial mark. There is nothing to buy or mount. N/A N/A N/A
R1, R2, R11, R12, R36,
R37 0 0 RES, 0, 5%, 0.1 W, 0603 0603 RC0603JR-070RL Yageo America
R4, R16 0 0 RES, 0, 5%, 0.125 W, 0805 0805 ERJ-6GEY0R00V Panasonic
R20, R22, R23, R26, R29 0 0 RES, 0, 5%, 0.1 W, 0603 0603 ERJ-3GEY0R00V Panasonic
R40 0 0 RES, 0, 5%, 0.063 W, 0402 0402 RC0402JR-070RL Yageo America

STANDARD TERMS FOR EVALUATION MODULES
1. Delivery: TI delivers TI evaluation boards, kits, or modules, including any accompanying demonstration software, components, and/or
documentation which may be provided together or separately (collectively, an “EVM” or “EVMs”) to the User (“User”) in accordance
with the terms set forth herein. User's acceptance of the EVM is expressly subject to the following terms.
1.1 EVMs are intended solely for product or software developers for use in a research and development setting to facilitate feasibility
evaluation, experimentation, or scientific analysis of TI semiconductors products. EVMs have no direct function and are not
finished products. EVMs shall not be directly or indirectly assembled as a part or subassembly in any finished product. For
clarification, any software or software tools provided with the EVM (“Software”) shall not be subject to the terms and conditions
set forth herein but rather shall be subject to the applicable terms that accompany such Software
1.2 EVMs are not intended for consumer or household use. EVMs may not be sold, sublicensed, leased, rented, loaned, assigned,
or otherwise distributed for commercial purposes by Users, in whole or in part, or used in any finished product or production
system.
2Limited Warranty and Related Remedies/Disclaimers:
2.1 These terms do not apply to Software. The warranty, if any, for Software is covered in the applicable Software License
Agreement.
2.2 TI warrants that the TI EVM will conform to TI's published specifications for ninety (90) days after the date TI delivers such EVM
to User. Notwithstanding the foregoing, TI shall not be liable for a nonconforming EVM if (a) the nonconformity was caused by
neglect, misuse or mistreatment by an entity other than TI, including improper installation or testing, or for any EVMs that have
been altered or modified in any way by an entity other than TI, (b) the nonconformity resulted from User's design, specifications
or instructions for such EVMs or improper system design, or (c) User has not paid on time. Testing and other quality control
techniques are used to the extent TI deems necessary. TI does not test all parameters of each EVM.
User's claims against TI under this Section 2 are void if User fails to notify TI of any apparent defects in the EVMs within ten (10)
business days after delivery, or of any hidden defects with ten (10) business days after the defect has been detected.
2.3 TI's sole liability shall be at its option to repair or replace EVMs that fail to conform to the warranty set forth above, or credit
User's account for such EVM. TI's liability under this warranty shall be limited to EVMs that are returned during the warranty
period to the address designated by TI and that are determined by TI not to conform to such warranty. If TI elects to repair or
replace such EVM, TI shall have a reasonable time to repair such EVM or provide replacements. Repaired EVMs shall be
warranted for the remainder of the original warranty period. Replaced EVMs shall be warranted for a new full ninety (90) day
warranty period.
3Regulatory Notices:
3.1 United States
3.1.1 Notice applicable to EVMs not FCC-Approved:
FCC NOTICE: This kit is designed to allow product developers to evaluate electronic components, circuitry, or software
associated with the kit to determine whether to incorporate such items in a finished product and software developers to write
software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or
otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition
that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference.
Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must
operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter.
3.1.2 For EVMs annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant:
CAUTION
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to
operate the equipment.
FCC Interference Statement for Class A EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.

FCC Interference Statement for Class B EVM devices
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance
with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•Consult the dealer or an experienced radio/TV technician for help.
3.2 Canada
3.2.1 For EVMs issued with an Industry Canada Certificate of Conformance to RSS-210 or RSS-247
Concerning EVMs Including Radio Transmitters:
This device complies with Industry Canada license-exempt RSSs. Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
Concernant les EVMs avec appareils radio:
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation
est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit
accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Concerning EVMs Including Detachable Antennas:
Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser)
gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type
and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for
successful communication. This radio transmitter has been approved by Industry Canada to operate with the antenna types
listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated.
Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
for use with this device.
Concernant les EVMs avec antennes détachables
Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et
d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage
radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope
rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le
présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le
manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne
non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de
l'émetteur
3.3 Japan
3.3.1 Notice for EVMs delivered in Japan: Please see http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page 日本国内に
輸入される評価用キット、ボードについては、次のところをご覧ください。
http://www.tij.co.jp/lsds/ti_ja/general/eStore/notice_01.page
3.3.2 Notice for Users of EVMs Considered “Radio Frequency Products” in Japan: EVMs entering Japan may not be certified
by TI as conforming to Technical Regulations of Radio Law of Japan.
If User uses EVMs in Japan, not certified to Technical Regulations of Radio Law of Japan, User is required to follow the
instructions set forth by Radio Law of Japan, which includes, but is not limited to, the instructions below with respect to EVMs
(which for the avoidance of doubt are stated strictly for convenience and should be verified by User):
1. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal
Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for
Enforcement of Radio Law of Japan,
2. Use EVMs only after User obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to
EVMs, or
3. Use of EVMs only after User obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan
with respect to EVMs. Also, do not transfer EVMs, unless User gives the same notice above to the transferee. Please note
that if User does not follow the instructions above, User will be subject to penalties of Radio Law of Japan.