i need helping to build class D audio amplifier in 1 week

[bsm225]

i have to build class D audio amplifier and i m really stack .... i m in Malaysia can any body help

 

[bsm225]

plz guys any replay

 

[Whortless]

i have to build class D audio amplifier and i m really stack .... i m in Malaysia can any body help

Hi,
What type? Power range? your capability? Which components you can access? etc. etc. If you would be clear, i think people can help much more than you expect!

 

[bsm225]

ok ... class D audio amplifier. the power range is +20,-20 ,,, the output power 50W... the components no problem i can mange get them

 

[Davet]

A Possible Solution

Take a look at Arjen Helder HiFi. He has various boards that should meet you specifications.

There are other vendors on eBay that may meet your requirements as well. Do a search for "T-Amp".

 

[bsm225]

thx Davet .. but wat i want is an easy schematic for class d amplifier that do not give much trouble in week .... i m really stuck

 

[gmarsh]

Does it have to be class D? Easiest method to get a 50W amplifier might be a LM3875 or LM3886 based, class-AB chip-amp.

Chip-amps are also far more tolerant of layout problems than class D, which means they're much easier to breadboard/prototype. You don't want to build a class D amplifier on a breadboard. Parts acquisition is also a lot easier, as far as finding things like appropriate inductors/capacitors for the output filter.

 

[stoc005]

Search the International Rectifier site. Lots of schematics/App. notes of Class D amps. Some simple...some not so much.

Here: International Rectifier - Audio Reference Design Kits

 

[syklab]

How about build around the TI TPA3106D1? The TPA3106D1 is a 40-W efficient, Class-D audio power amplifier for driving bridged-tied stereo speakers. The TPA3106D1 can drive stereo speakers as low as 4.

 

[bsm225]

thax guys .... yes it should be class d ..... i will try those chip and i will update u

 

[bsm225]

guy i bought irs2092 and i try to use the application circuit in breadbord and does not work ..anyone help

 

[gmarsh]

Class D circuitry needs careful attention paid to layout - a breadboard won't do. Try to get a PCB made with the application circuit.

 

[nalinb80]

Best chip for CLASS D in very less time is LM3886. U can wire it on breadboard and it works. Very cheap PCB are available in market . Output is great compared to market.

 

[rob g]

Best chip for CLASS D in very less time is LM3886. U can wire it on breadboard and it works. Very cheap PCB are available in market . Output is great compared to market.

LM3886 is not a class D device at all. It is a quasi class AB power amp on a chip. Also it runs hot, especially if you push it hard.