Texas Instruments TPA005D12 manual Precautions, Audio Power

Page 12

Precautions

2.1 Precautions

Power Supply Input Polarity and Maximum Voltage

Always ensure that the polarity and voltage of the external power connected to VCC power input connector J1, J2, and/or VDD 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.

Inserting or Removing EVM Boards

Do not insert or remove EVM boards with power applied Ð damage to the EVM board, the platform, or both may result.

Figure 2±1. Quick Start Platform Map

18

J1 VCC In +

VCC(J1) DC SOURCE

(J2)

JP2 AC/DC

JP3 Batt

 

Off Pwr

 

 

 

 

JP1

 

 

 

 

F1

C1+

VR1

On

ICC

 

S1

JP4

 

 

 

SUPPLY

POWER

U6

F2

VR2

DC

Power

In/Out

7

Power

Input

 

In

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D4 J2 AC/DC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D3

 

 

 

 

 

 

 

 

 

 

 

 

Right In

J3

D2

D1

LED1 VCC

R1

 

B1

 

IDD

JP5

Audio

 

Power

 

R2

In/Out

 

LED2 VDD

J7

Right Out

+ J6 VDD

12

9

Audio Input 10

14

 

Stereo In

J4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Left In

J5

 

 

 

 

 

 

 

 

TEXAS INSTRUMENTS 1997

Signal Conditioning

U1

****CAUTION****

Do not insert or remove EVM boards with power applied

Plug-N-Play Audio Amplifier

Evaluation Platform

SLOP097 Rev. C.1

 

Amps

 

S2

Off

U3

Conditioning

On

U4

U5

TP1

GND

 

 

 

 

 

 

 

J8

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

Right Out

 

 

U2

 

 

 

 

 

±

 

 

 

 

 

 

 

 

±

 

 

 

 

 

 

 

Left Out

 

 

 

 

JP6

Mode

+

 

 

 

 

Mute

 

U5

HP(U5) U2-U4

JP7

 

StereoLeft

 

JP8

Spk(U2-U4)

 

 

 

Polarity

 

 

J9

 

 

 

Lo

 

 

 

 

 

 

 

 

Hi

 

 

Out

 

 

 

 

 

 

 

 

S3 HP Source

+

 

C3

 

 

J10

R3

+

 

C2

HP Out

 

 

 

 

 

 

R4 R5

Speaker

Output

11

5

Headphone Output

3

13

2

4

6

2-2

Quick Start

Image 12
Contents Users Guide Important Notice Preface Related Documentation From Texas InstrumentsPage Contents Figures TablesIntroduction Feature Highlights Description TPA005D12 Class-D EVM Specifications MaximumTypical Quick Start OFFPrecautions Audio PowerQuick Start List for Platform Platform PreparationsQuick Start List for Stand-Alone Details ±1. The TI Plug-N-Play Audio Amplifier Evaluation Platform TPA005D12 Class-D Audio Power Amplifier Evaluation Module TP9 GND VDD2 1 TPA005D12 Class-D Stereo Audio Amplifier IC TP3±5. Class-D Functional Diagram Overview of Class-D Audio Amplifiers±6. Class-D Input and Output Waveforms Bridge-Tied Load BTL OperationControl and Indicator Circuits Class-D Differential Inputs6 TPA005D12 Class-D EVM Test Points ±2. TPA005D12 Class-D EVM Test PointsClass-D Amplifier Design Considerations Installing and Removing EVM Boards EVM InsertionEVM Removal Module Switches 2.2 S2 Ð Mute Switch2.1 S1 Ð Shutdown Signal Routing Signal ConditioningHeadphone Output Jack Headphone Jack Control Signals ShutdownMute/Mode Select JP6 Mute/Mode Polarity Select JP8Power Requirements JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8Inputs and Outputs InputsOutputs Monitor Controls and Indicators Input ConnectionsOutput Connections TPA005D12 Class-D EVM Performance Characteristics ±11. Class-D Amplifier Frequency Response at 4 Ω±12. Class-D Amplifier Distortion versus Output Power at 4 Ω ± % Crosstalk Frequency TPA005D12 Class-D EVM Interconnects TPA005D12 Class-D EVM Bill of Materials ±5. TPA005D12 Class-D EVM Bill of MaterialsTPA005D12 Class-D EVM Schematic ±18. TPA005D12 Class-D EVM Schematic Diagram±19. TPA005D12 Class-D EVM Top Assembly 10 TPA005D12 Class-D EVM PCB Layers±21. TPA005D12 Class-D EVM Top Layer ±23. TPA005D12 Class-D EVM Third Layer Details

TPA005D12 specifications

The Texas Instruments TPA005D12 is a highly regarded digital audio power amplifier that is engineered for high-performance applications. It is part of TI's TPA series, which is known for its efficient power delivery and superior sound quality. The TPA005D12 is designed to drive passive speakers while ensuring minimal power loss and efficient heat management.

One of the standout features of the TPA005D12 is its ability to provide 5 watts of continuous output power per channel into an 8-ohm load with a low total harmonic distortion (THD) rating. This makes it suitable for use in a variety of audio applications, including computer speakers, soundbars, and portable audio systems. The amplifier operates from a single supply voltage, ranging typically from 4.5V to 14V, allowing for flexible integration into different power supply environments.

The TPA005D12 adopts Class-D amplification technology, which significantly enhances power efficiency compared to traditional linear amplifiers. Class-D amplifiers convert the input audio signal into a series of pulse-width modulated signals, resulting in increased power savings and reduced heat generation. This not only improves the overall energy efficiency but also contributes to a longer operational lifespan for devices utilizing this technology.

Additionally, the TPA005D12 features an integrated thermal and short-circuit protection mechanism, which helps safeguard the amplifier from potential damage due to excessive temperatures or electrical faults. This reliability factor is crucial for manufacturers looking to create robust consumer electronics.

Another important characteristic is its integrated low-noise power supply rejection ratio (PSRR), which helps maintain sound clarity and reduces the impact of power supply noise on audio quality. The TPA005D12 also supports differential input signals, which can improve common-mode noise rejection and further enhance audio performance.

The device is offered in a compact package suitable for space-constrained applications, enabling easy integration into various designs. With a combination of low cost, high efficiency, and excellent audio performance, the Texas Instruments TPA005D12 stands out as a top choice for developers and engineers seeking reliable audio amplification solutions. Whether in home entertainment systems or personal audio devices, the TPA005D12 is designed to deliver exceptional sound quality with a minimal footprint.