Uploaded July 2022 | Updated September 2026, 1 week ago

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#165 In this video I continue looking at the class D audio amplifier, by focusing on the output filter. I look at the basic principles behind the single ended filter and then look in a bit more detail into the more complex BTL output filter.

Related videos:
Class A amplifier part 1 - youtu.be/GtFnkXar5JU
Class A amplifier part 2 - youtu.be/wdd18pYyFg0
Class B amplifier part 1 - youtu.be/eu54pe0LhpM
Class B amplifier part 2a - youtu.be/oTVJM5BZttw
Class B amplifier part 2b - youtu.be/qLYQAOWTHRE
Class C amplifier part 1 - youtu.be/xPTJmFtaGNc
Class C amplifier part 2 - youtu.be/gYbMpu4NoZo
Class D audio amplifier part 1 - youtu.be/w1Rq1cxfNEk
Class D audio amplifier part 2 - youtu.be/pLXautZaH8c
Class D audio amplifier part 3 - youtu.be/zhpOU6eb2gs
Class D RF amplifier part 1 - youtu.be/idisyToMZ58
Class D RF amplifier part 2 - youtu.be/wSFtRKrJ84M

Further reading:
ti.com/lit/an/slaa701a/slaa701a.pdf
maximintegrated.com/en/design/technical-documents/app-notes/3/3878.html

Datasheets and links used:
mouser.com/datasheet/2/115/PAM8403-247318.pdf
murata.com/en-eu/products/productdetail?partno=BLM21AG102BH1%23

Special Thanks to all my supporters on Patreon! Especially Ralf B., Paul Pr. Richard, Jonathan Alvarado and Tosta!

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