Texas Instruments TPA3156D2EVM User manual

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TPA3156D2EVM User’s Guide
User's Guide
SLOU499–October 2017
TPA3156D2EVM User’s Guide
This user’s guide describes operation of the TPA3156D2EVM (evaluation module). The user’s guide also
provides design information, such as a schematic, BOM, and PCB layout.
Contents
1 Hardware Overview.......................................................................................................... 2
2 Operation ..................................................................................................................... 3
2.1 Electrostatic Discharge Warning.................................................................................. 3
2.2 Unpacking the EVM ................................................................................................ 3
2.3 Power Supply Setup................................................................................................ 3
2.4 Evaluation Module Preparations.................................................................................. 3
2.5 Inputs and Outputs ................................................................................................. 4
2.6 Power Up ............................................................................................................ 4
2.7 Recommended Settings ........................................................................................... 4
2.8 Separate PVCC and AVCC Supply Support.................................................................... 5
3 Board Layout, Bill of Materials, and Schematic.......................................................................... 6
3.1 TPA3156D2EVM Board Layouts ................................................................................. 6
3.2 Bill of Materials (BOM) ............................................................................................. 8
3.3 TPA3156D2EVM Schematic..................................................................................... 11
List of Figures
1 TPA3156D2EVM............................................................................................................. 2
2 TPA3156D2EVM Top Overlay............................................................................................. 6
3 TPA3156D2EVM Bottom Overlay ......................................................................................... 7
4 TPA3156D2EVM Schematic.............................................................................................. 11
List of Tables
1 TPA3156D2EVM Specifications ........................................................................................... 2
2 Power Requirements........................................................................................................ 3
3 TPA3156D2EVM Setting 1 (Stereo Output).............................................................................. 4
4 TPA3156D2EVM Setting 1 (Single-Channel Output) ................................................................... 5
5 TPA3156D2EVM Setting 2 (Mono Output)............................................................................... 5
6 TPA3156D2EVM BOM...................................................................................................... 8

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TPA3156D2EVM User’s Guide
1 Hardware Overview
The TPA3156D2EVM demonstrates the integrated circuit, TPA3156D2, from TI. The TPA3156D2 is an
efficient, 70-W (per channel), stereo, digital-amplifier, power stage for driving two bridge-tied speakers or a
single parallel bridge-tied load (PBTL). This document covers EVM specifications and design
documentation.
Figure 1 shows the EVM board.
Figure 1. TPA3156D2EVM
Table 1 lists the EVM specifications.
Table 1. TPA3156D2EVM Specifications
Key Parameters Value
Power supply voltage 4.5 V to 26 V
Number of channels Two bridge-tied load (BTL) stereos
Load impedance 3.2 Ωto 8 Ω
Output power BTL 70 W per channel
Output power PBTL 140 W

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2 Operation
This chapter describes the power supply and system interfaces of the TPA3156D2EVM board. Information
regarding handling and unpacking, absolute operating conditions, and a description of the factory default
switch and jumper configurations are also provided. The following is a step-by-step guide to configuring
the TPA3156D2EVM for device evaluation.
2.1 Electrostatic Discharge Warning
Many components on the TPA3156D2EVM are susceptible to damage by electrostatic discharge.
CAUTION
Failure to observe ESD handling procedures may result in damage to EVM
components.
2.2 Unpacking the EVM
When opening the TPA3156D2EVM package, ensure there is one TPA3156D2EVM board using one
TPA3156D2. If the EVM is missing, contact the TI Product Information Center nearest you to inquire about
a replacement.
2.3 Power Supply Setup
A single power supply or separate PVCC/AVCC is required to power up the EVM (see Table 2). Because
most of the pins are PVCC compliant, the PVCC supply can also be used to power the analog supply
(AVCC) and to pull up the logic pins for shutdown (SD) control, and fault detection (FAULT).
Table 2. Power Requirements
Description Voltage Range Current Requirement Minimum Wire Size
PVCC/AVCC 4.5 to 26 V 8 A 24 AWG
CAUTION
Applying voltages above the limitations given in Table 2 may permanently
damage the hardware.
2.4 Evaluation Module Preparations
• Ensure that the external power source is set to OFF.
• Connect the external regulated power supply, adjusted from 4.5 V to 26 V, to the module PVCC and
GND banana jacks, taking care to observe marked polarity.

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2.5 Inputs and Outputs
Make the following input and output connections:
For BTL configuration:
1. Connect audio inputs, either differential or single-ended, to the LIN and RIN RCA phono plugs. To
enable the individual channel shutdown feature, tie RINP and RINN directly to ground (without
capacitors), and OUTPL and OUTNL should work normally.
2. Connect a load (or loads) across the outputs (OUTL+ and OUTL–) and (OUTR+ and OUTR–).
For PBTL configuration:
1. Apply a single input, differential or single ended, to the RIN RCA phono plug and tie LINP and LINN
directly to Ground (without capacitors).
2. Connect a single load from one of the left speaker jacks to one of the right speaker jacks depending on
how the filters are loaded.
2.6 Power Up
1. Verify correct voltage and input polarity and turn the external power supplies ON. The EVM should
begin operation.
2. Adjust the audio source for the correct volume.
2.7 Recommended Settings
This section contains the recommended settings for stereo, single-channel, and mono output.
Table 3 lists the settings for a single-ended input with auto recovery, PLIMIT, and BTL (stereo output).
Table 3. TPA3156D2EVM Setting 1 (Stereo Output)
Setting Description
J6 (RIN) R channel audio input
J9 (LIN) L channel audio input
JP1 (GNDR+) and JP3(GNDR–) set to OUT R channel on
JP4 (GNDL+) and JP6(GNDL–) set to OUT L channel on
JP2 (RGND) set to IN Single-ended input (R channel)
JP5 (LGND) set to IN Single-ended input (L channel)
JP7 sets IN Set PLIMIT
R4 Change PLMIT voltage value
JP8 (/SD=/FAULT) set to IN Auto-recovery mode
J11 (MODESEL=L) Low idle-loss mode

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Table 4 lists the settings for a single-ended input with auto recovery, PLIMIT, and BTL (single-channel
output).
Table 4. TPA3156D2EVM Setting 1 (Single-Channel Output)
Setting Description
J6 (RIN) No audio input
J9 (LIN) L channel audio input
JP1 (GNDR+) and JP3 (GNDR–) set to IN R channel off
JP4 (GNDL+) and JP6 (GNDL–) set to OUT L channel on
JP5 (LGND) set to IN Single-ended input (L channel)
JP7 set to IN Set PLIMIT
R4 Change PLMIT voltage value
JP8 (/SD=/FAULT) set to IN Auto-recovery mode
J11 (MODESEL=L) Low idle-loss mode
Table 5 lists the settings for a single-ended input with auto recovery, PLIMIT, and PBTL (mono output).
Table 5. TPA3156D2EVM Setting 2 (Mono Output)
Setting Description
J6 (RIN) R channel audio input
J9 (LIN) No audio input
JP1 (GNDR+) and JP3 (GNDR–),set to OUT R channel on
JP4 (GNDL+) and JP6 (GNDL–), set to IN L channel off, PBTL mode
JP2, set to IN Single-ended input (R channel)
JP7, set to IN Set PLIMIT
R4 Change PLMIT voltage value
JP8 (/SD=/FAULT) set to IN Auto-recovery mode
J11 (MODESEL=L) Low idle-loss mode
2.8 Separate PVCC and AVCC Supply Support
Supplying a voltage of AVCC that is lower than PVCC (for example PVCC = 24 V and AVCC = 12 V),
reduces the power dissipation on the internal LDO. This gives customers the flexibility to choose between
the extreme, low-idle current mode (J3: 1 and 2 set to IN, with separate AVCC) and single power supply
mode (J3: 2 and 3 set to IN, without AVCC).

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3 Board Layout, Bill of Materials, and Schematic
3.1 TPA3156D2EVM Board Layouts
Figure 2 and Figure 3 show the board layouts for the EVM.
Figure 2. TPA3156D2EVM Top Overlay

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Figure 3. TPA3156D2EVM Bottom Overlay

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3.2 Bill of Materials (BOM)
Table 6 lists the BOM for this EVM.
Table 6. TPA3156D2EVM BOM
Designator Quantity Value Description Package Reference Part Number Manufacturer Alternate
Part Number Alternate Manufacturer
!PCB 1 Printed-circuit board AMPS027 Any
C1, C13,
C20, C25 4 0.68 µF Capacitor, ceramic, 0.68 µF, 50 V, ±10%, X7R, 1206 1206 GRM31MR71H684KA88L MuRata
C2, C14,
C21, C26 4 0.01 µF Capacitor, ceramic, 0.01 µF, 50 V, ±10%, X7R, 0603 0603 GRM188R71H103KA01D MuRata
C3, C9 2 220 µF Capacitor, AL, 220 µF, 35 V,
±20%, 0.09 Ω, TH 10 × 12.5 mm EEU-FC1V221 Panasonic
C4, C10 2 0.1 µF Capacitor, ceramic, 0.1 µF, 50
V, ±10%, X7R, 0603 0603 GCM188R71H104KA57D MuRata
C5, C11 2 1000 pF Capacitor, ceramic, 1000 pF, 50
V, ±5%, C0G/NP0, 0603 0603 GRM1885C1H102JA01D MuRata
C6 1 10 µF Capacitor, ceramic, 10 µF, 35 V,
±10%, X7R, 1210 1210 GRM32ER7YA106KA12L MuRata
C7, C12,
C19, C22 4 1 µF Capacitor, ceramic, 1 µF, 16 V, ±10%, X7R, 0603 0603 GRM188R71C105KA12D MuRata
C8 1 1 µF Capacitor, ceramic, 1 µF, 30 V,
±10%, X7R, 0603 0603 C1608X7R1V105K080AC TDK
C15, C16,
C17, C18 4 0.22 µF Capacitor, ceramic, 0.22 µF, 25 V, ±10%, X7R, 0603 0603 GRM188R71E224KA88D MuRata
C23, C24 2 1 µF Capacitor, ceramic, 1 µF, 16 V,
±10%, X7R, 0805 0805 C0805C105K4RACTU Kemet
C27 1 47 pF Capacitor, ceramic, 47 pF, 50 V,
±5%, C0G/NP0, 0603 0603 GRM1885C1H470JA01D MuRata
H1, H2, H3,
H4 4Machine screw, round, #4 – 40 × 1/4, nylon, Philips panhead Screw NY PMS 440 0025 PH B&F Fastener Supply
H5, H6, H7,
H8 4Standoff, hex, 0.5" L #4 – 40 Nylon Standoff 1902C Keystone
H9 1 Heatsink, 25 × 50 × 25 mm Heatsink,
25 × 50 × 25 mm HEATSINK100W_25X50X25 Texas Instruments
J1, J2, J4, J8 4 Binding Post, RED, TH 11.4 × 27.2 mm 7006 Keystone
J3, J11, J12,
J13, J14 5 Header, 100 mil, 3 × 1, gold, TH PBC03SAAN PBC03SAAN Sullins
Connector
Solutions
J5, J7, J10 3 Binding post, black, TH 11.4 × 27.2 mm 7007 Keystone
J6 1 RCA jack, red, R/A, TH PC Mount Phono jack-
red, TH 971 Keystone

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Table 6. TPA3156D2EVM BOM (continued)
Designator Quantity Value Description Package Reference Part Number Manufacturer Alternate
Part Number Alternate Manufacturer
J9 1 RCA jack, white, R/A, TH PC Mount Phono jack-
white, TH 970 Keystone
J15, J16,
J17, J18,
J19, J20,
J21, J22 8 Header, 100 mil, 2 × 1, gold, TH Sullins 100 mil, 1 × 2,
230 mil above insulator PBC02SAAN Sullins
Connector
Solutions
L1, L2, L3,
L4 4 10 µH Inductor, Shielded, Ferrite, 10 µH, 7.8 A, 0.011 Ω, SMD 2-pin, 12.3 × 12.3 mm body, 8 mm height 931BS-100M MuRata Toko
Q1 1 40-V Transistor, NPN, 40 V, 0.6
A, SOT-23 SOT-23 MMBT2222ALT1G ON Semiconductor
R1, R2, R3,
R12 4 3.3 Resistor, 3.3, 5%, 0.1 W, 0603 0603 CRCW06033R30JNEA Vishay-Dale
R4 1 100 k Trimmer, 100-kΩ, 0.5 W, TH 375 × 190 × 375 mil 3386P-1-104LF Bourns
R5 1 100 k Resistor, 100 k, 1%, 0.125 W,
0805 0805 CRCW0805100KFKEA Vishay-Dale
R6, R7 2 20.0 k Resistor, 20.0 k, 1%, 0.125 W,
0805 0805 CRCW080520K0FKEA Vishay-Dale
R8 1 4.70 k Resistor, 4.70 k, 0.1%, 0.1 W,
0603 0603 RG1608P-472-B-T5 Susumu Co Ltd
R9, R11,
R13, R18,
R19, R20,
R21 7 100 k Resistor, 100-kΩ, 1%, 0.1 W,
0603 0603 RC0603FR-07100KL Yageo America
R10 1 499 k Resistor, 499 k, 1%, 0.1 W,
0603 0603 RC0603FR-07499KL Yageo America
S1, S2 2 Switch, tactile, SPST-NO, 0.05
A, 12 V, SMT Switch, 4.4 × 2 × 2.9 mm TL1015AF160QG E-Switch
SH1, SH2,
SH3, SH4,
SH5, SH6,
SH7, SH8,
SH9, SH10,
SH11, SH12,
SH13
13 1 × 2 Shunt, 100 mil, gold-plated,
black Shunt 969102-0000-DA 3M SNT-100-BK-G Samtec
TP1, TP2,
TP3, TP4,
TP5, TP6,
TP7, TP8 8Test point, miniature, orange,
TH Orange miniature test point 5003 Keystone
TP9, TP10,
TP11, TP12 4 Test point, miniature, black, TH Black miniature test point 5001 Keystone

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Table 6. TPA3156D2EVM BOM (continued)
Designator Quantity Value Description Package Reference Part Number Manufacturer Alternate
Part Number Alternate Manufacturer
U1 1 Two 70-W, class-d amplifiers with low idle power dissipation,
DAD0032A (TSSOP-32) DAD0032A TPA3156D2DADR Texas
Instruments TPA3156D2DAD Texas Instruments
C28, C29,
C30, C31 0 330 pF Capacitor, ceramic, 330 pF, 50 V, ±5%, C0G/NP0, 0603 0603 GRM1885C1H331JA01D MuRata
FID1, FID2,
FID3 0Fiducial mark. There is nothing to buy or mount. N/A N/A N/A
R14, R15,
R16, R17 0 10 Resistor, 10, 5%, 0.125 W, 0805 0805 CRCW080510R0JNEA Vishay-Dale