Optimized Modulation Scheme Eliminates Output Filter

Score M, Dapkus D. Optimized Modulation Scheme Eliminates Output Filter. In: AES Convention 109. Audio Engineering Society; 2000. Paper 5196. Available from: https://aes.org/publications/elibrary-page/?id=9142

@inproceedings{Score2000_9142,
  author = {Score, Michael and Dapkus, Donald},
  title = {{Optimized Modulation Scheme Eliminates Output Filter}},
  booktitle = {AES Convention 109},
  note = {Paper 5196},
  year = {2000},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=9142}
}

TY  - CPAPER
TI  - Optimized Modulation Scheme Eliminates Output Filter
AU  - Score, Michael
AU  - Dapkus, Donald
T2  - AES Convention 109
M1  - Paper 5196
PY  - 2000
DA  - 2000/09/06
UR  - https://aes.org/publications/elibrary-page/?id=9142
PB  - Audio Engineering Society
LA  - en
AB  - Class-D amplifiers are two to four times more efficient than Class-AB amplifiers and provide a solution for applications where lower supply current, lower heat dissipation or longer battery life are necessary. However, traditional Class-D amplifiers introduce other problems: increased solution size and cost. These Class-D amplifiers require an output filter to operate. A new modulation scheme has been developed to eliminate the need for an output filter. This paper discusses the advantages of Class D over Class AB and focuses on the details of the new modulation scheme and why it enables filterless operation. This paper also discusses the effect that eliminating the output filter has on supply current, efficiency, sound quality, and electromagnetic interference (EMI).
ER  -