TPA3116D2 50-W Stereo (BTL) Class-D Audio Amp w/ SpeakerGuard™ | TI.com

TPA3116D2 (ACTIVE)

50-W Stereo (BTL) Class-D Audio Amp w/ SpeakerGuard™

 

Recommended alternative parts

  • TPA3221  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   For higher output power and up to 100-W stereo or 200-W mono, see the TPA3221 Class-D amplifier.
  • TPA3156D2  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   For higher output power and up to 70-W stereo, see the TPA3156D2 Class-D amplifier.

Description

The TPA31xxD2 series are stereo efficient, digital amplifier power stage for driving speakers up to 100 W / 2 Ω in mono. The high efficiency of the TPA3130D2 allows it to do 2 × 15 W without external heat sink on a single layer PCB. The TPA3118D2 can even run 2 × 30 W / 8 Ω without heat sink on a dual layer PCB. If even higher power is needed the TPA3116D2 does 2 × 50 W / 4 Ω with a small heat-sink attached to its top side PowerPAD. All three devices share the same footprint enabling a single PCB to be used across different power levels.

The TPA31xxD2 advanced oscillator/PLL circuit employs a multiple switching frequency option to avoid AM interferences; this is achieved together with an option of either master or slave option, making it possible to synchronize multiple devices.

The TPA31xxD2 devices are fully protected against faults with short-circuit protection and thermal protection as well as overvoltage, undervoltage, and DC protection. Faults are reported back to the processor to prevent devices from being damaged during overload conditions.

Features

  • Supports Multiple Output Configurations
    • 2 × 50 W Into a 4-Ω BTL Load at 21 V (TPA3116D2)
    • 2 × 30 W Into a 8-Ω BTL Load at 24 V (TPA3118D2)
    • 2 × 15 W Into a 8-Ω BTL Load at 15 V (TPA3130D2)
  • Wide Voltage Range: 4.5 V to 26 V
  • Efficient Class-D Operation
    • >90% Power Efficiency Combined With Low Idle Loss Greatly Reduces Heat Sink Size
    • Advanced Modulation Schemes
  • Multiple Switching Frequencies
    • AM Avoidance
    • Master and Slave Synchronization
    • Up to 1.2-MHz Switching Frequency
  • Feedback Power-Stage Architecture With High PSRR Reduces PSU Requirements
  • Programmable Power Limit
  • Differential and Single-Ended Inputs
  • Stereo and Mono Mode With Single-Filter Mono Configuration
  • Single Power Supply Reduces Component Count
  • Integrated Self-Protection Circuits Including Overvoltage, Undervoltage, Overtemperature, DC-Detect, and Short Circuit With Error Reporting
  • Thermally Enhanced Packages
    • DAD (32-Pin HTSSOP Pad Up)
    • DAP (32-Pin HTSSOP Pad Down)
  • –40°C to 85°C Ambient Temperature Range

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Parametrics

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Part number Order Audio input type Architecture Speaker channels (Max) Power stage supply (Min) (V) Power stage supply (Max) (V) Output power (W) Load (Min) (ohms) SNR (dB) THD + N @ 1 kHz (%) Iq (Typ) (mA) Control interface Closed/open loop Analog supply (Min) (V) Analog supply (Max) (V) Power to parallel bridge tied load (Max) (W) PSRR (dB) Operating temperature range (C) Rating
TPA3116D2 Order now Analog Input     Class-D     Stereo     4.5     26     50     4     102     0.1     20     Hardware     Closed     4.5     26     100     70     -40 to 85     Catalog    
TPA3126D2 Order now Analog Input     Class-D     Stereo     4.5     26     50     4     102     0.02     23     Hardware     Closed     4.5     26     100     70     -40 to 85     Catalog    
TPA3156D2 Order now Analog Input     Class-D     Stereo     4.5     26     70     2     102     0.1     17     Hardware     Closed     4.5     26     100     70     -40 to 85     Catalog    
TPA3220 Order now Analog Input     Class-D     Stereo     7     30     100     1     108     0.02     15     Hardware     Closed     5     30     200     60     -40 to 85     Catalog    
TPA3221 Order now Analog Input     Class-D     Stereo     7     30     100     1     108     0.02     15     Hardware