7W Filter-Free Class-D Stereo Amplifier In Space Saving QFN - TPA3131D2

TPA3131D2 (ACTIVE)

7W Filter-Free Class-D Stereo Amplifier In Space Saving QFN

Description

The TPA3131/32D2 are efficient, stereo digital amplifier power stages for driving speakers with up to 2x42W/4Ω peak power. TPA3131/32D2 operates heatsink-free with cooling to PCB through the bottom side PowerPAD™ with sustained output power from 2x4W/8Ω (TPA3131D2) to 2x25W/8Ω (TPA3132D2).

The TPA3131/32D2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences; this is achieved together with an option of Master/Slave option, making it possible to synchronize multiple devices.

The TPA3131/32D2 are fully protected against faults with short-circuit protection and thermal protection as well as over-voltage, under-voltage and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

For feature compatible devices see: PowerPAD™ up device 2x50W TPA3116D2, PowerPAD™ down 2x15W TPA3130D2 and 2x30W TPA3118D2.

Features

  • Supports Multiple Output Configurations
    • 2×4-W into a 8-Ω BTL Load at 7.4 V (TPA3131D2)
    • 2×25-W into a 8-Ω BTL Load at 19 V (TPA3132D2)
  • Wide Voltage Range: 4.5 V – 26 V
  • Automotive Load-Dump Compliant
  • Efficient Class-D Operation
    • >90% Power Efficiency Combined with Low Idle Loss
      for Heat Sink free Operation
    • Advanced Modulation Schemes
  • Multiple Switching Frequencies
    • AM Avoidance
    • Master/Slave Synchronization
    • Up to 1.2 MHz Switching Frequency
  • Feedback Power Stage Architecture with High PSRR
    Reduces PSU Requirements
  • Programmable Power Limit
  • Differential/Single-Ended Inputs
  • Stereo and Mono Mode with Single Filter Mono Configuration
  • Single Power Supply Reduces Component Count
  • Integrated Self-Protection Circuits Including Over-Voltage,
    Under-Voltage, Over-Temperature, DC-Detect, and Short
    Circuit with Error Reporting
  • Thermally Enhanced Package
    • 32-Pin QFN Pad-Down
  • –40°C to 85°C Ambient Temperature Range

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Parametrics Compare all products in Mid/High-Power Amplifier

 
Max. Power to Bridge Tied Load
Max. Power to Parallel Bridge Tied Load
Min. Supported Bridge Tied Load
Min. Supported Parallel Bridge Tied Load
Closed/Open Loop
Max Speaker Outputs (#)
Input Type
Control Type
Analog Supply Min [V]
Analog Supply Max [V]
Power Stage Supply Min (V)
Power Stage Supply Max (V)
Rating
Operating Temperature Range (C)
Approx. Price (US$)
Architecture
TPA3131D2 TPA3110D2 TPA3116D2 TPA3118D2 TPA3130D2 TPA3132D2
7     15     50     30     15     25    
  40     100     60     30      
2     4     3     4     6     2    
  4     2     3     3      
Closed     Closed     Closed     Closed     Closed     Closed    
2     2     2     2     2     2    
Analog     Analog     Analog     Analog     Analog     Analog    
Hardware     Hardware     Hardware     Hardware     Hardware     Hardware    
  8            
  26            
4.5     8     4.5     4.5     4.5     4.5    
26     26     26     26     26     26    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
1.10 | 1ku     0.85 | 1ku     1.80 | 1ku     1.65 | 1ku     1.30 | 1ku     1.20 | 1ku    
Class D     Class D     Class D     Class D     Class D     Class D    

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TPA2011D1   3.2W mono class-d with auto-recovering short-circuit protection   PORTABLE AMPLIFIER - DYNAMIC SPEAKER    3.2W Mono Class-D Amplifier  
TLV320AIC3254   Very Low-Power Stereo Audio CODEC with programmable miniDSP   AUDIO CONVERTER AND CODEC - Audio CODEC    Stereo Audio Codec with miniDSP  
TLV320AIC3262   Low Power Stereo Codec w/miniDSP, Stereo class-D Speakers, DirectPath Headphone   AUDIO CONVERTER AND CODEC - Audio CODEC    Low Power Stereo Codec w/miniDSP, Stereo class-D Speakers, DirectPath Headphone  
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