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Class D Switching Power Amplifiers and Power D/A conversion

low wattage mono amps
low wattage mono amps
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Old 12th February 2012, 06:31 AM   #1
robtwickenham is offline robtwickenham  United Kingdom
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Default low wattage mono amps


This may seem like a stupid question, but.....

Are there any boards/kits/schematics out there for single channel amps in the 10-15 watt range?

I am engaged in an ongoing project to convert my entire library to FLAC, to stream wirelessly with AirPlay dierectly to each set-up. As a first step, I am interested in converting a set of speakers to an active configuration, with on-board amps, and am looking for a solution other than running two t-amps with one channel fed to each half of the board.

Any suggestions would be warmly welcomed.


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Old 12th February 2012, 12:27 PM   #2
elevator is offline elevator  United States
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Originally Posted by robtwickenham View Post

This may seem like a stupid question, but.....
Glad you asked
I'm just about ready to have PCBs fabbed for something in that field.
It uses the TI TAS5727 chip in PBTL, meaning
15W into 4Ohm @12V single supply
38W into 4Ohm @18V single supply
The TAS5727 has digital input (i2S), soft limiter and a programmable DSP, interesting for speaker cabinet equalization etc. See here: Speaker Amplifier and Modulator - Mid/High-Power Amplifier - TAS5727 - TI.com
The board is meant to be used for distributed audio systems.
At higher supply voltages it can even serve a subwoofer IMO.
Here is a PCB render. If you're interested, I can have a few more built.
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