SLAU874 October   2022 TPA3223

 

  1.   TPA3223 Evaluation Module
    1.     Trademarks
    2. 1.1 Quick Start (BTL MODE)
      1. 1.1.1 Required Hardware
      2. 1.1.2 Connections and Board Configuration (BTL MODE)
      3. 1.1.3 Power-Up
    3. 1.2 Setup By Mode
      1. 1.2.1 BTL MODE (Stereo - 2 Speaker Outputs)
      2. 1.2.2 PBTL MODE (Mono – 1 Speaker Output)
        1. 1.2.2.1 Connections and Board Configuration
        2. 1.2.2.2 Power-Up
    4. 1.3 Hardware Configuration
      1. 1.3.1 Indicator Overview (OTW_CLIP and FAULT)
      2. 1.3.2 PWM Frequency Adjust
      3. 1.3.3 Modulation Modes (AD Mode and HEAD Mode)
      4. 1.3.4 Output Mode Selection
      5. 1.3.5 Audio Front End
      6. 1.3.6 EVM Power Tree
        1. 1.3.6.1 TPA3223 Supplies
        2. 1.3.6.2 TPA3223EVM Power Options
          1. 1.3.6.2.1 PVDD Only (12 V to 45 V)
          2. 1.3.6.2.2 PVDD (12 V to 45 V) and One Non-5-V Supply
          3. 1.3.6.2.3 PVDD (12 V to 45 V) and 5-V Supply
      7. 1.3.7 LC Response and Overview
      8. 1.3.8 Reset Circuit and POR
      9. 1.3.9 Analog-Input-Board Connector (J28)
    5. 1.4 EVM Design Documents
      1. 1.4.1 TPA3223 Board Layouts
      2. 1.4.2 TPA3223 Board Layouts
      3. 1.4.3 TPA3223EVM Schematics
      4. 1.4.4 TPA3223EVM Bill of Materials
  2.   Trademarks
  3. 1Quick Start (BTL MODE)
    1. 1.1 Required Hardware
    2. 1.2 Connections and Board Configuration (BTL MODE)
    3. 1.3 Power-Up
  4. 2Setup By Mode
    1. 2.1 BTL MODE (Stereo - 2 Speaker Outputs)
    2. 2.2 PBTL MODE (Mono – 1 Speaker Output)
      1. 2.2.1 Connections and Board Configuration
      2. 2.2.2 Power-Up
  5. 3Hardware Configuration
    1. 3.1 Indicator Overview (OTW_CLIP and FAULT)
    2. 3.2 PWM Frequency Adjust
    3. 3.3 Modulation Modes (AD Mode and HEAD Mode)
    4. 3.4 Output Mode Selection
    5. 3.5 Audio Front End
    6. 3.6 EVM Power Tree
      1. 3.6.1 TPA3223 Supplies
      2. 3.6.2 TPA3223EVM Power Options
        1. 3.6.2.1 PVDD Only (12 V to 45 V)
        2. 3.6.2.2 PVDD (12 V to 45 V) and One Non-5-V Supply
        3. 3.6.2.3 PVDD (12 V to 45 V) and 5-V Supply
    7. 3.7 LC Response and Overview
    8. 3.8 Reset Circuit and POR
    9. 3.9 Analog-Input-Board Connector (J28)
  6. 4EVM Design Documents
    1. 4.1 TPA3223 Board Layouts
    2. 4.2 TPA3223 Board Layouts
    3. 4.3 TPA3223EVM Schematics
    4. 4.4 TPA3223EVM Bill of Materials

1.5.17 Analog-Input-Board Connector (J28)

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 TPA3223EVM with ease. Examples of plug-in modules include front ends for guitar amplifier, karaoke, wireless sub-woofer, and front-end audio crossover.

GUID-686F4327-7E99-48D9-941B-B2EE9E0F53F7-low.pngFigure 3-17 AIB EVM Connector

As Figure 3-17 shows, the AIB connector includes the following pins, associated specifications are listed in Table 3-17.

Table 3-16 AIB Connector (J28) Pinout
Pin
#		FunctionDescriptionAudio EVM
Input/Output
1Amp Out ASpeaker-level output from audio Class-D EVM (SE or one side of BTL)O
2Amp Out BSpeaker-level output from audio Class-D EVM (SE or one side of BTL)O
3PVDDPVDD voltage supply from audio Class-D EVM (variable voltage depending on Class-D EVM use)O
4GNDGround reference between audio plug-in module and audio class-D EVM-
5NC--
6NC--
73.3 V3.3-V supply from EVM; used for powering Audio Plug-in ModuleO
83.3 V3.3-V supply from EVM; used for powering Audio Plug-in ModuleO
912 V12-V supply from EVM; used for powering Audio Plug-in ModuleO
10EN and RESETAssert enable and reset control for audio class-D EVM (active low)I
11Analog IN_AAnalog audio input A (analog in EVM) , MCLK I2S Bus (digital in EVM)I
12NC--
13Analog IN_BAnalog audio input B (analog in EVM) , BCLK I2S Bus (digital in EVM)I
14CLIP_OTWClipping detection, overtemperature warning, or both from audio class-D EVM (active low)O
15Analog IN_CAnalog audio input C (analog in EVM) , FS/LRCLK I2S Bus (digital in EVM)I
16FAULTFault detection from audio Class-D EVM (Active Low)O
17Analog IN_DAnalog audio Input D (analog in EVM) , SDIN I2S Bus (digital in EVM)I
18NC--
19NC--
20NC--
21GNDGround reference between audio plug-in module and audio class-D EVM-
22GNDGround reference between audio plug-in module and audio class-D EVM-
23NC--
24NC--
25NC--
26NC--
27Amp Out CSpeaker-level output from audio class-D EVM (SE or one side of BTL)O
28Amp Out DSpeaker-level output from audio class-D EVM (SE or one side of BTL)O
Table 3-17 AIB Power Rail Specifications
EVM Power RailsAlways AvailableVoltage RangeMax CurrentSource
PVDDYes15–80 V500 mAExternal Source
12 VYes12 V500 mALDO
3.3 VYes3.3 V100 mALDO