Class D info, literature sought

[Shaun]

Can anyone refer me to literature/info on the design of Class D amplifiers, specifically for use as subwoofer amps?

TIA
Shaun

 

[Petter]

http://www.ti.com
http://www.harris.com (they may have changed name)
http://www.linfinity.com
http://www.tripath.com
http://www.cirrus.com
http://www.lcaudio.dk (there is some info in Danish here)

the list goes on. Do a search on google. You may wish to add the following criteria in addition to the obvious:

Apogee DDX
Sharp
Equibit
Saunders
Coolmax
ICEpower

I think we can safely say that TI has thought leadership in this area today.

Petter

 

[km]

hi.

>there is some info in Danish here>

not much if any in danish (or english either)...

are you interested in designing or using class-d amplification?

if the latter you may find this of interest :

http://www.cadaudio.dk

bye k madsen

 

[Petter]

OK then

http://www.lcaudio.dk/zappulse.htm

This is an update on their sigma delta unit which should come out at some point.


Intersil (not Harris) with CoolAudio -- I saw some pretty nifty design notes there a few years back on how to design proper two stage LC filters. Nice. A quick google search (courtesy of crappy Intersil search engine) yielded http://www.intersil.com/data/AN/AN9/AN9525/AN9525.pdf which you might find useful.


Petter