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TPA3255: Audio amplifer for 70V / 100V line to drive speakers

Part Number: TPA3255
Other Parts Discussed in Thread: TAS5634, TAS5548


We are looking for a solution to make a 70V/100V audio amplifier ..

can we have solution in TI make such solution..

can we use TPA3255 to make a 70V/100V constant voltage system ...

we are looking a transformer less design


yogesh singhal

  • Hi Yogesh

       For our current products, the maximum voltage is TAS5634, could reach 62V voltage.

       We could consider using TAS5548 + H bridge to build a high voltage amp, the H bridge device should be no problem to reach 100V. The only problem is the output stage would be open loop, performance would be very hard to guarantee, like THD and noise.

       I'm sorry that maybe not too much choice without transformer.