Texas Instruments TPA3223EVM, User Manual, Page: 1 / 33

User’s Guide
TPA3223 Evaluation Module
ABSTRACT
This user's guide describes the characteristics, operation, and use of the TPA3223 evaluation module. A
complete printed-circuit board (PCB) description, schematic diagram, and bill of materials are also included.
Table of Contents
1 Quick Start (BTL MODE) ......................................................................................................................................................... 3
1.1 Required Hardware............................................................................................................................................................ 3
1.2 Connections and Board Configuration (BTL MODE)......................................................................................................... 4
1.3 Power-Up........................................................................................................................................................................... 5
2 Setup By Mode ........................................................................................................................................................................ 7
2.1 BTL MODE (Stereo - 2 Speaker Outputs).......................................................................................................................... 7
2.2 PBTL MODE (Mono – 1 Speaker Output).......................................................................................................................... 7
3 Hardware Configuration ....................................................................................................................................................... 10
3.1 Indicator Overview (OTW_CLIP and FAULT)................................................................................................................... 10
3.2 PWM Frequency Adjust................................................................................................................................................... 10
3.3 Modulation Modes (AD Mode and HEAD Mode).............................................................................................................. 11
3.4 Output Mode Selection..................................................................................................................................................... 11
3.5 Audio Front End................................................................................................................................................................ 11
3.6 EVM Power Tree.............................................................................................................................................................. 12
3.7 LC Response and Overview............................................................................................................................................ 12
3.8 Reset Circuit and POR..................................................................................................................................................... 13
3.9 Analog-Input-Board Connector (J28)............................................................................................................................... 14
4 EVM Design Documents ....................................................................................................................................................... 16
4.1 TPA3223 Board Layouts.................................................................................................................................................. 16
4.2 TPA3223 Board Layouts.................................................................................................................................................. 18
4.3 TPA3223EVM Schematics............................................................................................................................................... 19
4.4 TPA3223EVM Bill of Materials......................................................................................................................................... 22
List of Figures
Figure 1-1. Output Configuration BTL...................................................................................................................................... 0
Figure 1-2. EVM Board (Top Side)........................................................................................................................................... 0
Figure 1-3. EVM Board (Bottom Side)..................................................................................................................................... 0
Figure 1-4. Output Configuration PBTL - 4 Inductors.............................................................................................................. 0
Figure 1-5. EVM Board With Connectors and Jumpers........................................................................................................... 0
Figure 1-6. Filter Frequency Response................................................................................................................................... 0
Figure 1-7. RESET Circuit....................................................................................................................................................... 0
Figure 1-8. AIB EVM Connector.............................................................................................................................................. 0
Figure 1-9. TPA3223EVM Top Composite Assembly.............................................................................................................. 0
Figure 1-10. TPA3223EVM Bottom Composite Assembly....................................................................................................... 0
Figure 1-11. TPA3223 EVM Board Dimensions....................................................................................................................... 0
Figure 1-12. TPA3223EVM Schematic 1................................................................................................................................. 0
Figure 1-13. TPA3223EVM Schematic 2................................................................................................................................. 0
Figure 1-14. TPA3223EVM Schematic 3................................................................................................................................. 0
Figure 1-1. Output Configuration BTL.......................................................................................................................................... 3
Figure 1-2. EVM Board (Top Side)............................................................................................................................................... 4
Figure 1-3. EVM Board (Bottom Side)......................................................................................................................................... 4
Figure 2-1. Output Configuration PBTL - 4 Inductors.................................................................................................................. 7
Figure 2-2. EVM Board With Connectors and Jumpers............................................................................................................... 8
Figure 3-1. Filter Frequency Response..................................................................................................................................... 13
Figure 3-2. RESET Circuit......................................................................................................................................................... 14
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