Audio power SMPS 2kW

This is a custom switchmode power supply I designed mainly for use together with audio power amplifiers. In this short video there is two 300W amplifiers connected to my own smps which is adjusted to regulate at +/- 80VDC, which can be seen by the Fluke. The supply is using a microcontroller as syscon.
This is an early prototype but performs quite good. Enjoy!

Category:

Science & Technology

Tags:

• diy
• handmade
• switchmode
• powersupply

[bigsweden1975]

The two amp boards are 300W class B designs. (Not mine)

But the powersupply could power four of those without problem.

Because of the power supply's ability to regulate both output rails independently of each other, it's immune to rail pumping effects caused by heavy loaded half-bridge class D designs.

So the power supply suits good to power multichannel class D amplifier stages aswell. :-D

[bigsweden1975]

Nope, there are no syncronized rectifiers in this design. And there are no GDT either. What you see close to the rectifier diodes is the current limiting inductors. And of course I have the schematics, I designed it! :-)

[bigsweden1975]

Thanks, I take this as positive feedback since I've actually done everything you can see in the video. I worked a long time as power electronics designer, if that helps you understand. I'm a little surprised how you can believe this is a ready made smps, in my eyes it's an obvious prototype, just look at the main transformer, ETD49, placed upside down. :-)

[First2ner]

man this one looks good too :D

did you use IC for amps, or so sort of self oscillating one?

[alintraxxx]

Were you show that 2000w at 160v???? WEREEEE

[MicrosiMe]

@gilhooley999

look at

diysmps dot com

[MicrosiMe]

OK, good

Enjoy mine also :)

/watch?v=NGmIVPTfC9g

[gilhooley999]

Great job !!! Now I would like to ask you about books, or good source of knowledge. In fact, I would like to build my own SMPS for desired voltage and current. For example I need to build SMPS with 2 x 60 V and 5 A. What you suggest, regarding to my little knowledge of this. Thank you...

[MicrosiMe]

OK

Are you using syncronized rectifier at output?

I see you are using GDT close to them.

Do you have schematic?

[MicrosiMe]

This looks like a ready made SMPS??

Are you using synchronized rectifier output?

no way this is made by you!