Texas Instruments manual TPA005D12 Class-D EVM Schematic

Page 40

TPA005D12 Class-D EVM Schematic

3.9 TPA005D12 Class-D EVM Schematic

The following schematic depicts the TPA005D12 class-D EVM.

Note:

C13 and C14 are optional and have been provided to allow flexibility of design.

Figure 3±18. TPA005D12 Class-D EVM Schematic Diagram

VDD

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R1

 

R2

 

 

 

 

 

 

 

 

VDD

+5V

SD

 

100k

 

100k

 

 

 

 

 

 

 

VDD2

+5V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S2

 

 

TPA005D12

 

 

 

 

 

 

TP2

Mute

 

S1

SD

 

1

SHUTDOWN

COSC

48

 

C5

 

 

 

TP3

 

 

 

 

2

MUTE

AGND

47

 

 

 

 

 

 

 

Mute

 

 

3

AGND

AGND

46

 

470pF

 

 

 

 

 

C3

1F

1F

C1

 

 

 

 

LIN±

 

 

4

LINN

RINN

45

 

 

 

RIN±

LIN+

 

 

C2

1F

5

LINP

RINP

44

1F

C4

 

 

 

RIN+

 

 

 

C6

470pF

6

LCOMP

RCOMP

43

470pF

C7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C13

C9

C10

C8

1F

7

AGND

FAULT_0

42

TP2

 

C11

 

C12

C14

 

8

 

 

41

 

 

 

 

VDD

FAULT_1

TP3

 

 

 

 

10 F

1 F

 

 

9

 

 

40

 

1 F

 

10 F

 

VDD

 

 

 

 

LPVDD

RPVDD

 

 

 

 

 

VDD2

LOUT+

 

C20

L1

 

10

LOUTP

ROUTP

39

 

L2

C23

 

 

ROUT+

 

 

 

11

LOUTP

ROUTP

38

 

 

 

 

 

C24

0.22F

15H

 

12

PGND

PGND

37

 

15H

0.22F

C25

 

 

 

 

 

 

 

 

1F

C21

L3

 

13

PGND

PGND

36

 

L4

C22

 

1F

 

 

 

 

14

LOUTN

ROUTN

35

 

 

 

 

 

 

15H

 

 

F

 

 

LOUT±

 

0.22 F

 

 

15

LOUTN

ROUTN

34

 

15 H

0.22

 

ROUT±

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

LPVDD

RPVDD

33

 

 

 

 

 

 

 

 

 

 

 

17

NC

NC

32

 

 

 

 

 

 

 

 

 

 

 

18

NC

NC

31

 

 

 

 

 

 

 

 

 

 

 

19

NC

NC

30

 

 

 

 

 

 

 

 

 

 

 

20

AGND

V2P5

29

 

C16

 

 

 

 

 

 

 

 

 

21

PVDD

PVDD

28

 

 

 

 

 

 

 

C15

C17

 

22

VCP

PGND

27

 

1F

 

 

 

 

 

 

 

23

CP3

CP4

26

 

 

 

 

 

 

 

 

1 F

0.1F

 

 

 

 

 

 

 

 

 

 

 

24

CP2

CP1

25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VDD

 

 

 

 

 

C18 0.047F

 

 

 

 

 

 

 

 

 

 

 

 

 

C19 0.047F

 

 

 

 

 

 

 

3-26

Details

Image 40
Contents Users Guide Important Notice Preface Related Documentation From Texas InstrumentsPage Contents Figures TablesIntroduction Feature Highlights Description Maximum TPA005D12 Class-D EVM SpecificationsTypical 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 EVM Insertion Installing and Removing EVM BoardsEVM Removal 2.2 S2 Ð Mute Switch Module Switches2.1 S1 Ð Shutdown Signal Conditioning Signal RoutingHeadphone Output Jack Headphone Jack Control Signals ShutdownMute/Mode Select JP6 Mute/Mode Polarity Select JP8Power Requirements JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8Inputs Inputs and OutputsOutputs Monitor Input Connections Controls and IndicatorsOutput 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.