210w stereo class d amplifier based on the TDA8954TH


my project is a 210W per channel stereo amplifier based on the famous integrated TDA8954TH

I want to carry out this great project since this integrated does not have a very good reputation thanks to the fact that plates with this integrated are sold that are not well designed and to top it off with poor quality components, which results in the deterioration of the integrated and explains the little life that these plates have, with this design I want to prove that this is an excellent integrated and that if suitable designs and components of the best quality are used it can result in an excellent amplifier

The operation of this amplifier is based on the integrated TDA8954TH which is a class D amplifier with a great sound quality easily comparable to that of a class AB amplifier but with a remarkable efficiency of up to 93%, in this design the integrated will be operating in stereo configuration for which it will deliver a power of up to 210w with a THD of 10%, the design consists of a led which will indicate if the amplifier is on or not.

The amplifier consists of two pins which, if bridged, will immediately send the amplifier to standby.

Due to the high output current of up to 12 amps that this amplifier is capable of supplying, it was decided to leave the tracks that go to pins 16 and 21 without antisolder so that later they are tinned and in this way improve their conductivity and the efficiency of the circuit.

This design was made on a two-layer PCB which will provide greater stability for the amplifier and also avoid possible interference.

the lc filter of this amplifier will be composed of two special inductors for class DPA6331-AE of 15µH and two polyester capacitors with a capacity of 470 nF, which together with the inductors will give it a very good sound clarity.


Finally, I recommend that to feed this amplifier a symmetrical source of 40 v and 6 amps is used, to have a better sound quality I recommend using a preamplifier and a generous bank of capacitors for the source of this amplifier that by the way is also published in my account

Thank you very much PCBWay for supporting us in our projects

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Oct 27,2020
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