My new single supply fullbridge amp

[mantabernd]

Ok, the first and most elaborate step of monitoring the amp is done... the switching status. From now I can analyze the health status (for example clipping or dc offset) in digital domain.

An externally hosted image should be here but it was not working when we last tested it.

 

[GregH2]

Ah, so you have a self oscillating design? I'd still love to see a schematic if you're willing to share.

Cheers,
Greg

 

[dudaindc]

...
At the moment I don't want to publish the circuit but I think I will make a assembly kit with maybe all the smd parts pre-assembled.

And there will be a "plug-in" dsp board, based on a ADAU1701/1702 DSP from analog devices. Together with the monitoring interface this could be a very powerful and flexible amp. I will work on it the next weeks 🙂

That sounds interesting... 😎

 

[CharlieLaub]

At the moment I don't want to publish the circuit but I think I will make a assembly kit with maybe all the smd parts pre-assembled.

And there will be a "plug-in" dsp board, based on a ADAU1701/1702 DSP from analog devices. Together with the monitoring interface this could be a very powerful and flexible amp. I will work on it the next weeks 🙂

I see you have evolved your earlier idea of DSP+amp. Performance LOOKS SUPER!

I would be very interested in the amp "kit", as well as the ADAU1701 plug in board. If you could have 3 or 4 amplification channels fed from the DSP that would be perfect for active loudspeakers.

Can you post some of your thoughts about the DSP - how will it be programmed (e.g. using Sigma Studio)?

Thanks for posting about your work!

 

[mantabernd]

I see you have evolved your earlier idea of DSP+amp. Performance LOOKS SUPER!

Thanks!

I would be very interested in the amp "kit", as well as the ADAU1701 plug in board. If you could have 3 or 4 amplification channels fed from the DSP that would be perfect for active loudspeakers.

I'm thinking about a two channel version, having one "motheramp" and a "doughteramp". DSP plugin-card and monitoring µC is then on the motheramp. But the HOW is still a questionmark in my eyes...

Can you post some of your thoughts about the DSP - how will it be programmed (e.g. using Sigma Studio)?

Thanks for posting about your work!

Simple, minimal configuration of the adau170x. Using the build in analoge in- and Outputs. Yes, I will use Sigma Studio. But I haven't thought about the details right now.

 

[r100]

I like the idea of a "green" low power consumption amp. The way to go ! If it sounds as good as it measures I would be interested in building one ;-)

 

[MrPerform]

Hy. Any updates?

 

[mantabernd]

Hi guys,

yes and no... I sold the prototype and the guy is very happy about it 😀

Unfotunately I'm a bit busy at the moment but this project is still in my mind and I will make a new prototype as soon as I can 🙂