Another smps

dexter2003 · 20th October 2008, 05:04 PM

HELLO,

I have a 2*350w amplifier moduls , and i don't wanna use big iron core transformers , i would like to build a smps for about 900w .
I have search by googXX and i find the a &t lab , with their 1kw smps for k6 amplifier.
I would like to make this one , but i don't like the pcb , it's too big , and the cooper tracks are too closer one to another .
I have a little experience in smps ,i have build a smps for 500w from two pc power supply.
If there is somebody who did a project like his ,i would be very greadful if it will post some information's .

sorry for my english

nigelwright7557 · 20th October 2008, 10:55 PM

I wouldnt mess around with a PCB on a SMPS if its tried and tested.
You will need wide tracks to carry the required current anyway.

megajocke · 20th October 2008, 11:12 PM

The layout of the K6 supply has way to small creepage distances, I wouldn't build it!

http://www.a-and-t-labs.com/K6_Sw_Amp/

dexter2003 · 21st October 2008, 10:28 PM

yes, that's what i'm saying .
And there is a lot of space that isn't used , that smps could be built more compact and with better isolation from primary .

mflorin · 22nd October 2008, 10:31 AM

I'm working on a similar 1kW power supply...
UC3846 current mode control vs. SG3525 with average current mode control

Just a remark - at this power level I will always consider a PFC stage in front of converter.

microsim444 · 11th November 2009, 01:43 PM

K-6 Power supply is totally crap. and it wont work with you UNLESS you buy it.

I tried it, its stupid

20th October 2008, 05:04 PM	#1
dexter2003 diyAudio Member Join Date: Mar 2008	Another smps HELLO, I have a 2*350w amplifier moduls , and i don't wanna use big iron core transformers , i would like to build a smps for about 900w . I have search by googXX and i find the a &t lab , with their 1kw smps for k6 amplifier. I would like to make this one , but i don't like the pcb , it's too big , and the cooper tracks are too closer one to another . I have a little experience in smps ,i have build a smps for 500w from two pc power supply. If there is somebody who did a project like his ,i would be very greadful if it will post some information's . sorry for my english

20th October 2008, 10:55 PM	#2
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	I wouldnt mess around with a PCB on a SMPS if its tried and tested. You will need wide tracks to carry the required current anyway. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

11th November 2009, 01:43 PM	#6
microsim444 Account Disabled Join Date: Oct 2008	K-6 K-6 Power supply is totally crap. and it wont work with you UNLESS you buy it. I tried it, its stupid

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20th October 2008, 11:12 PM	#3
megajocke diyAudio Member Join Date: Jan 2003 Location: Solna	The layout of the K6 supply has way to small creepage distances, I wouldn't build it! http://www.a-and-t-labs.com/K6_Sw_Amp/

21st October 2008, 10:28 PM	#4
dexter2003 diyAudio Member Join Date: Mar 2008	yes, that's what i'm saying . And there is a lot of space that isn't used , that smps could be built more compact and with better isolation from primary .

22nd October 2008, 10:31 AM	#5
mflorin diyAudio Member Join Date: Jun 2005 Location: IASI	I'm working on a similar 1kW power supply... UC3846 current mode control vs. SG3525 with average current mode control Just a remark - at this power level I will always consider a PFC stage in front of converter.

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