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Summary of Contents for Texas Instruments TPA032D01
- Page 1 TPA032D01 Mono Class D Audio Power Amplifier Evaluation Module User’s Guide May 2000 Mixed-Signal Products SLOU065...
- Page 2 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability.
- Page 3 Number SLOU011) provides detailed information on the evaluation platform and its use with TI audio evaluation modules. TPA032D01 Mono Class-D Audio Power Amplifier (TI Literature Number SLOS282) This is the data sheet for the TPA032D01 audio amplifier integrated circuit. Design Considerations for Class-D Audio Power Amplifiers ,...
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Page 5: Table Of Contents
........... Using the TPA032D01 Class-D EVM Stand-Alone . - Page 6 ......3–1 Platform Jumper and Switch Settings for the TPA032D01 EVM Power Inputs ..
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Page 7: Introduction
Chapter 1 Introduction This chapter provides an overview of the Texas Instruments (TI) TPA032D01 mono class-D audio power amplifier evaluation module (SLOP309). It includes a list of EVM features, a brief description of the module illustrated with a pictorial diagram, and a list of EVM specifications. -
Page 8: Feature Highlights
Feature Highlights 1.1 Feature Highlights The TI TPA032D01 mono class-D audio power amplifier evaluation module and the TI plug-n-play audio amplifier evaluation platform include the following features: TPA032D01 mono class-D audio power amplifier evaluation module Internal depop circuitry to greatly reduce turnon transients in outputs... -
Page 9: Description
1.2 Description The TPA032D01 mono class-D audio power amplifier evaluation module is a complete, 10-W mono audio power amplifier. It consists of the TI TPA032D01 mono class-D audio power amplifier IC along with a small number of other parts mounted on a circuit board that measures approximately 2-1/4 inches by 1-3/4 inches (Figure 1–1 and 1–2). -
Page 10: Tpa032D01 Class-D Evm Specifications
The platform has room for a single TPA032D01 class-D evaluation module and is a convenient vehicle for demonstrating TI’s audio power amplifier and related evaluation modules. The EVM simply plugs into the platform, which... -
Page 11: Quick Start
Chapter 2 Quick Start Follow the steps in this chapter to quickly prepare the TPA032D01 mono class-D audio amplifier EVM for use. Using the TPA032D01 class-D EVM with the TI plug-n-play audio amplifier evaluation platform is a quick and easy way to connect power, signal and control inputs, and signal outputs to the EVM using standard connectors. -
Page 12: Quick Start Platform Map
Precautions 2.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to V power input connector J1, J2, and/or V power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source. -
Page 13: Platform Jumper And Switch Settings For The Tpa032D01
1) Ensure that all external power sources and platform power switch S1 are set to OFF . 2) Install a TPA032D01 module in platform socket U2, taking care to align the module pins correctly (EVM power pins engage sockets U2 and U3). - Page 14 (2 V to 5 V or left floating) for normal operation, or low (tied to ground) to shut down the TPA032D01 amplifier IC on the EVM. Note that the control signals applied to the EVM Mute and SD inputs must have sufficient current capability to overcome the 100-kΩ...
- Page 15 Chapter 3 Details This chapter provides details on the TPA032D01 IC evaluation module, a parts list for the TPA032D01 class-D evaluation module, and module PCB layer illustrations. Topic Page Precautions ..........
- Page 16 Precautions 3.1 Precautions Power Supply Input Polarity and Maximum Voltage Always ensure that the polarity and voltage of the external power connected to V power input connector J1, J2, and/or V power input connector J6 are correct. Overvoltage or reverse-polarity power applied to these terminals can open onboard soldered-in fuses and cause other damage to the platform, installed evaluation modules, and/or the power source.
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Page 17: Platform Jumper And Switch Settings For The Tpa032D01 Evm Power Inputs
User’s Guide for the TI plug-n-play audio amplifier platform, TI Literature Number SLOU011 for more information). The TPA032D01 class-D EVM requires no setup for power source selection. Table 3–1. Platform Jumper and Switch Settings for the TPA032D01 EVM Power Inputs POWER TYPE (Note 2) S2 (Note 3) -
Page 18: Typical Headphone Plug
(output jacks J7, J8, and J9)—the OUT– lines from the power amplifier sockets are not tied to each other or to platform ground. This allows the TPA032D01 class-D power amplifier EVM to operate in the highly-efficient bridge-tied load configuration when driving speakers. -
Page 19: Tpa032D01 Class-D Evm Fault Indicator Table
Module pins are provided for easy connection of off-board control and monitoring. There are two active low fault indicator pins on the TPA032D01 amplifier IC (IC pins 40 and 41) that provide feedback when a fault condition exists. Signals on these pins provide the status of the class-D amplifier: operational, over-current, thermal fault, and under-voltage lockout. - Page 20 3.6.2 S2 — Mute Switch Pushbutton switch S1 on the TPA032D01 class-D EVM allows manual muting of the amplifier IC. S1 connects the amplifier IC MUTE pin to ground, muting the output. The EVM Mute control input pin also allows external control of this function.
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Page 21: Tpa032D01 Class-D Evm Stand-Alone Connections For Mono Btl Output
(with the exception of the fault monitor circuit, which is optional). The discussion in this section is in reference to this figure unless otherwise noted. Figure 3–3. TPA032D01 Class-D EVM Stand-Alone Connections for Mono BTL Output LED 1 12 V... - Page 22 Using the TPA032D01 Class-D EVM Stand-Alone 3.7.2 Input Connections The class-D amplifier input signals can be connected in either of two ways: differential or single-ended. For differential operation, connect the signal source to the positive and negative inputs (IN+ and IN– module pins). For...
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Page 23: Tpa032D01 Class-D Evm Bill Of Materials
3.8 TPA032D01 Class-D EVM Bill of Materials The components in the bill of materials (Table 3–4) were selected for their common values, availability, and the smallest size available to meet these criteria. Table 3–4. TPA032D01 Class-D EVM Bill of Materials Manufacturer/ Reference Description Size Qty. -
Page 24: Tpa032D01 Class-D Evm Schematic Diagram
TPA032D01 Class-D EVM Schematic 3.9 TPA032D01 Class-D EVM Schematic The TPA032D01 class-D EVM schematic is shown in Figure 3–4. Figure 3–4. TPA032D01 Class-D EVM Schematic Diagram 100k 12 V 100k 12 V VCC2 TPA032D01 Mute SHUTDOWN COSC MUTE AGND 1000pF... -
Page 25: Tpa032D01 Class-D Evm Top Assembly
TPA032D01 Class-D EVM PCB Layers 3.10 TPA032D01 Class-D EVM PCB Layers The following illustrations depict the TPA032D01 class-D EVM PCB assembly and layers. These drawings are not to scale. Gerber plots can be obtained from any TI Sales Office. Figure 3–5. TPA032D01 Class-D EVM Top Assembly Figure 3–6. -
Page 26: Tpa032D01 Class-D Evm Top Layer
TPA032D01 Class-D EVM PCB Layers Figure 3–7. TPA032D01 Class-D EVM Top Layer Figure 3–8. TPA032D01 Class-D EVM Second Layer 3-12 Details... -
Page 27: Tpa032D01 Class-D Evm Third Layer
TPA032D01 Class-D EVM PCB Layers Figure 3–9. TPA032D01 Class-D EVM Third Layer Figure 3–10. TPA032D01 Class-D EVM Bottom Layer Details 3-13... - Page 28 3-14 Details...
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