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.
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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|
||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|
||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|
||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|
||Analog Input||Class-D||Stereo||7||30||100||1||108||0.02||15||Hardware||Closed||5||30||200||60||-40 to 85||Catalog|