Texas Instruments SLOU082 manual Using The TPA032D03 Class-D EVM Stand-Alone, Power Connections

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Using The TPA032D03 Class-D EVM Stand-Alone

3.7 Using The TPA032D03 Class-D EVM Stand-Alone

Using the TPA032D03 mono class-D audio power amplifier evaluation module stand-alone is much the same as using it with the platform. The same 9-V to 14-V power supply range and the isolated OUT+ and OUT± lines for BTL operation requirements exist. Inserting a plug into the EVM headphone jack switches the EVM to the headphone mode and shuts down the class-D amplifier section. Figure 3±3 shows the connections that are required for operation (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. TPA032D03 Class-D EVM Stand-Alone Connections for Mono BTL Output

LED 1

5 V

R

Fault

R

LED 0

 

 

 

Monitor

 

 

12 V

Headphone

Output Jack

Right HP

Input

Mode

Audio

Line

Inputs

 

 

 

C19

 

 

 

C20

 

J1

 

RHP

R12

C1

R11

GND

 

R4

TP3

 

 

 

 

 

 

C5

R1

 

Mode

SD

S1

Mute

 

 

S2

±IN+

C3

C4

 

SLOP310

TPA032D03 EVM Board

 

 

GND

VCC

R14

R13

 

 

TP2

C16 C17

R7 R8

Texas Instruments 2000

 

U1

R9

 

C12

C18 TP1

R10

 

Mute

SD

OUT±

Mute

Shutdown

Left HP Input

GND

 

R2

 

C2

LHP

 

R3

R6 R5

 

C11

VDD

GND

L1

L2

OUT+

+

 

VCC

 

 

5 V

Note: Capacitor C11 is optional (not assembled) and a location for it on the EVM PCB has been provided to increase design flexibility and allow decoupling capacitance to be added.

3.7.1Power Connections

Power must be connected to both the VCC and VDD module pins. Power supply ground can be connected to any module ground pin, although best results are achieved if power supply grounds are connected to the pins adjacent to the VCC and VDD module pins. The ground and power wires should be twisted to reduce inductance and noise pickup if they are long.

Details 3-7

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Contents Users Guide Important Notice Related Documentation From Texas Instruments PrefacePage Contents Tables FiguresIntroduction Feature Highlights Description TPA032D03 Class-D EVM Specifications MaximumTypical JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8 Quick StartAudio Power PrecautionsPlatform Preparations Quick Start List for PlatformQuick Start List for Stand-Alone Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform Plug-N-Play Platform Power Requirements and Connections Plug-N-Play Platform Inputs and Outputs InputsOutputs TPA032D03 Class-D EVM Test Points Control and Indicator Circuits1 S1 Ð Shutdown Switch Module Switches2 S2 Ð Mute Switch 3 J1 Ð Headphone Jack Mode SwitchPower Connections Using The TPA032D03 Class-D EVM Stand-AloneControls and Indicators Input ConnectionsOutput Connections ±4. TPA032D03 Class-D EVM Bill of Materials TPA032D03 Class-D EVM Bill of MaterialsTPA032D03 class-D EVM schematic is shown in ±4 TPA032D03 Class-D EVM Schematic10 TPA032D03 Class-D EVM PCB Layers ±5. TPA032D03 Class-D EVM Top Assembly±7. TPA032D03 Class-D EVM Top Layer ±9. TPA032D03 Class-D EVM Third Layer Details

SLOU082 specifications

Texas Instruments SLOU082 is a technical document primarily focused on the TPS7A47 device, which is an enhanced, low-noise linear voltage regulator designed for world-class performance in sensitive analog applications. This document explains the features, technologies, and characteristics that set the TPS7A47 apart in the industry.

One of the main features of the TPS7A47 is its ultra-low output noise, boasting a remarkable specification of just 1.2 μVRMS across a bandwidth of 10 Hz to 100 kHz. This characteristic makes it an ideal choice for high-precision, low-noise applications such as RF and audio signal processing, where minimizing noise is crucial for system performance. Additionally, the device offers a wide output voltage range from 1.4 V to 20 V, providing flexibility in various applications.

The TPS7A47 operates with a maximum output current of 1 A, enabling it to support multiple loads efficiently. Its dropout voltage is impressively low, particularly at light load conditions, ensuring high-efficiency performance in battery-powered applications. This aspect significantly extends battery life, making it suitable for portable devices.

Another highlight is the PowerPAD package offered for the TPS7A47, which enhances thermal performance and simplifies PCB design. The integration of thermal protection ensures the regulator operates safely under various conditions, preventing potential damage due to overheating.

The TPS7A47 also includes features such as reverse current protection, which prevents current from flowing back into the input when the output voltage exceeds the input voltage. This feature enhances reliability and extends the longevity of the device in various circuit configurations.

In terms of control, the TPS7A47 utilizes a low-dropout architecture, ensuring steady voltage regulation with minimal input-to-output voltage differential. It also supports a wide range of capacitor types, which allows for flexibility in component selection in layout design.

Overall, the Texas Instruments SLOU082 document on the TPS7A47 provides detailed insights into one of the most effective voltage regulation solutions available today. With exceptional noise performance, a versatile voltage range, robust thermal management, and reliability characteristics, the TPS7A47 is an exemplary choice for engineers and designers aiming to achieve high-performance analog systems.
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