The TAS5634 is a PWM-input, Class-D amplifier power stage that supports 2 x 300 W (6 Ω) or 1 x 600 W (3 Ω) output power with a nominal power supply voltage of 58V. The 58V supply voltage provides support for higher impedance speaker loads including 6 Ω in BTL and 3 Ω in PBTL. Integrated MOSFETs and a new gate drive scheme provide high peak efficiency and low idle losses to reduce thermal solution size.
The TAS5634 uses a closed-loop feedback design with constant voltage gain. The internally matched gain resistors ensure a high power supply rejection ratio (PSRR) and low output noise due to switch mode power supplies (SMPS).
The TAS5634 is a fully integrated power stage compatible with TIs portfolio of digital-input (I2S) audio processors and modulators, like the TAS5548 and TAS5558, making it a complete digital-input Class-D amplifier. The TAS5634 is available in the surface mount 44-pin HTSSOP package and is part of a pin-compatible family of PWM-input Class-D power stages including the TAS5612LA, TAS5614LA and TAS5624A.
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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|
||PWM||Class-D||4||12||58||300||3||105||0.025||29.5||Hardware||Closed||10.8||13.2||600||70||0 to 70||Catalog|
||PWM||Class-D||4||12||32.5||125||4||105||0.05||22.3||Hardware||Closed||10.8||13.2||250||80||0 to 125||Catalog|
||PWM||Class-D||4||12||36||150||4||105||0.03||22.3||Hardware||Closed||10.8||13.2||300||80||0 to 125||Catalog|
||PWM||Class-D||4||12||34||125||1.5||105||0.025||23.4||Hardware||Closed||13.2||10.8||300||65||-40 to 125||Catalog|