The present work presents the creation and analysis of a class D
amplifier, to carry out the amplification, the integrated circuit IRS2092
from IOR - Infineon Technologies was used, capable of managing,
modulating and amplifying the signals, requiring only a good choice of
power and monitoring components. it also requires a good selection of
switching transistors and a suitable passive filter for demodulation. Thus,
an amplifier capable of delivering a power of 40W in a resistive load with
low harmonic distortion, less than 0.8%, was designed, being comparable
to linear amplifiers, but with an efficiency greater than 90%, common
value for class amplifiers D .In the work, the values of the components that
fit in the test sequences are calculated. To arrive at the results, a
synthesis of the functioning of each amplifier stage was made using
commercially components, using an automatic oscillating modulation that
has an excellent sound quality, besides making the circuit smaller within
its cost. Finally, the amplifier was assembled to carry out the specifications
and tests in order to validate the operation and practical specifications.
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