Building SMPS for +50v and -50v

DJDestiny · 29th April 2011, 09:18 AM

yeah , it shows what i need , +-50V , more then 6A ,
into a 100W + 100W diy amp , into 4ohms speaker :P
I need a SMPS suitable for this .

kubeek · 29th April 2011, 11:59 AM

The actual SMPS circuit is not that complicated, the problem is making the transformer.
I am now designing a prototype for cca 750W on ETD44 core, so after I finish I will post some guidelines etc.

DJDestiny · 29th April 2011, 12:13 PM

Quote:

Originally Posted by kubeek

The actual SMPS circuit is not that complicated, the problem is making the transformer.
I am now designing a prototype for cca 750W on ETD44 core, so after I finish I will post some guidelines etc.

Thanks for helping !
i only need 400W SMPS , think i might be able to get 50v+- from one ?
I might go commercial if need be ...

kubeek · 29th April 2011, 05:10 PM

You can get any voltage you want, but you etiher have to wind your own transformer or find a company that can do it for you.

col · 29th April 2011, 10:23 PM

how about the connexelectronic ones?

Switched Mode Power Supplies (SMPS)

Connexelectronic

DJDestiny · 30th April 2011, 06:04 PM

Quote:

Originally Posted by col

how about the connexelectronic ones?

Switched Mode Power Supplies (SMPS)

Connexelectronic

I went there , the site a lil bit terrible , no images , probably because of coding error or something .

AutoClassA · 30th April 2011, 06:59 PM

Quote:

Originally Posted by DJDestiny

I went there , the site a lil bit terrible , no images , probably because of coding error or something .

However

I built this SMPS long time ago, using IR2153D

There is NO protection with this SMPS, Either turn on delay for IR2153D

But i made those on external PCBs, While this SMPS working already without them, but they are needed,

You can find them on the internet, or some one here can give them to you

If you are interested, I can send you files

It was based on ER39 Transformer, with 1000W RMS output power.

indianajo · 30th April 2011, 07:27 PM

For a packaged solution priced in euros, look at audiopower.it. They have DPS-600 (watts) and DPS-500 in exactly the voltages you want. An engineer posted a thread here, showing -85 db noise charts.

DJDestiny · 1st May 2011, 03:52 PM

Quote:

Originally Posted by AutoClassA

However

I built this SMPS long time ago, using IR2153D

There is NO protection with this SMPS, Either turn on delay for IR2153D

But i made those on external PCBs, While this SMPS working already without them, but they are needed,

You can find them on the internet, or some one here can give them to you

If you are interested, I can send you files

It was based on ER39 Transformer, with 1000W RMS output power.

How does it cope with such a small heatsink ? i have a old 200W useless PSU and the heatsinks are nowhere small ... in fact , all parts are near SMD .
And what is attached to the second heatsink ( the finned one , right side ) there ?

ssanmor · 1st May 2011, 04:14 PM

Do you want to build it yourself or do you want it ready-made? In the latter case, have a look at SPS30 at www.coldamp.com
We can tailor to the voltage you need.

29th April 2011, 09:18 AM	#1
DJDestiny diyAudio Member Join Date: Feb 2011	Building SMPS for +50v and -50v yeah , it shows what i need , +-50V , more then 6A , into a 100W + 100W diy amp , into 4ohms speaker :P I need a SMPS suitable for this .

29th April 2011, 10:23 PM	#5
col diyAudio Member Join Date: Feb 2008 Location: Melbourne, Victoria, Australia	how about the connexelectronic ones? Switched Mode Power Supplies (SMPS) Connexelectronic __________________ http://www.minirig.org.au

30th April 2011, 07:27 PM	#8
indianajo diyAudio Member Join Date: Jan 2010 Location: Jeffersonville, Indiana USA	For a packaged solution priced in euros, look at audiopower.it. They have DPS-600 (watts) and DPS-500 in exactly the voltages you want. An engineer posted a thread here, showing -85 db noise charts. __________________ Dynakit ST70, ST120, PAS2,Hammond H182(2 ea),H112,A100,10-82TC,Peavey CS800S,SP2-XT's, T-300 HF Projs, Steinway console, Herald RA88a mixer, Wurlitzer 4500

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29th April 2011, 11:59 AM	#2
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	The actual SMPS circuit is not that complicated, the problem is making the transformer. I am now designing a prototype for cca 750W on ETD44 core, so after I finish I will post some guidelines etc.

29th April 2011, 05:10 PM	#4
kubeek diyAudio Member Join Date: Dec 2005 Location: Prague, Czech Rep	You can get any voltage you want, but you etiher have to wind your own transformer or find a company that can do it for you.

1st May 2011, 04:14 PM	#10
ssanmor diyAudio Member Join Date: Jan 2002 Location: Madrid	Do you want to build it yourself or do you want it ready-made? In the latter case, have a look at SPS30 at www.coldamp.com We can tailor to the voltage you need.

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