Class D power amplifiers are becoming more popular because multichannel designs, combined with small form factors, have become the norm. This paper describes the basic building blocks of an all-digital class D amplifier. Techniques critical to achieving good performance are discussed in more detail. Recent advances in feedback and feed-forward techniques have enabled both low-cost designs and high performance designs, based on the same controller IC. Some example applications are discussed.
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https://aes2.org/publications/elibrary-page/?id=17273
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