300W SMPS DESIGN .............. FULLY TESTED - Page 2

aman khalsa · 27th April 2011, 09:51 AM

hello sir .

looking very nice ...

thank u ...

phoenix87 · 27th April 2011, 09:55 AM

not only does it look nice it works even nicer....................... the best part when u dont have to invest in bulky transformer and huge caps ..................

regards
phoenix

Qmara · 27th April 2011, 09:56 AM

what about multi o/p like +/-55 and +/-110 or +/-70 with 2200-3000watts ?
anybody build ? i'm very interested with that SMPS.

guzzibreva1 · 27th April 2011, 10:10 AM

I think the cooling fan should be temperature controlled an not necessarily voltage regulated. Audio amps spend most of their time at fairly low power levels so a cooling fan shouldn't be needed very often. Excellent job on the layout and design.

viki_v2 · 27th April 2011, 10:21 AM

Hello,
Nice job.
Now lay out of pcb if you don't mind, So we can etch our own board and try this fantastic design.
Thank you

guzzibreva1 · 28th April 2011, 05:09 PM

You have an interesting way of driving the top FET in this design. I am not sure how the conduction timing is controlled to prevent both FETs being on during switching. I am thinking since it is transformer driven the top can't turn on until the flux starts to change in the transformer. Clever, if that's what is happening. Is this a common?

phoenix87 · 5th May 2011, 11:27 AM

sorry guys a bit late .......................... busy with the new pcb release of the smps neways currently i can give a double sided board layout for this smps with a pfc .......
any body interested ........... i am currently working on the single sided board its gonna a bit of time........

regards
phoenix

phoenix87 · 5th May 2011, 11:28 AM

wanna sneak peak at the single sided board...................

phoenix87 · 5th May 2011, 11:33 AM

so here it is

regards
phoenix

viki_v2 · 5th May 2011, 01:15 PM

Quote:

Originally Posted by phoenix87

so here it is

regards
phoenix

waiting for more details

27th April 2011, 09:51 AM	#11
aman khalsa diyAudio Member Join Date: Oct 2010 Location: punjab	hello sir . looking very nice ... thank u ... __________________ http://http://www.facebook.com/profile.php?id=100000413405389

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27th April 2011, 09:55 AM	#12
phoenix87 diyAudio Member Join Date: May 2010	not only does it look nice it works even nicer....................... the best part when u dont have to invest in bulky transformer and huge caps .................. regards phoenix

27th April 2011, 09:56 AM	#13
Qmara diyAudio Member Join Date: Aug 2010	what about multi o/p like +/-55 and +/-110 or +/-70 with 2200-3000watts ? anybody build ? i'm very interested with that SMPS.

27th April 2011, 10:10 AM	#14
guzzibreva1 diyAudio Member Join Date: Apr 2011	I think the cooling fan should be temperature controlled an not necessarily voltage regulated. Audio amps spend most of their time at fairly low power levels so a cooling fan shouldn't be needed very often. Excellent job on the layout and design.

27th April 2011, 10:21 AM	#15
viki_v2 diyAudio Member Join Date: Feb 2009 Location: India (Mumbai)	Hello, Nice job. Now lay out of pcb if you don't mind, So we can etch our own board and try this fantastic design. Thank you

28th April 2011, 05:09 PM	#16
guzzibreva1 diyAudio Member Join Date: Apr 2011	You have an interesting way of driving the top FET in this design. I am not sure how the conduction timing is controlled to prevent both FETs being on during switching. I am thinking since it is transformer driven the top can't turn on until the flux starts to change in the transformer. Clever, if that's what is happening. Is this a common?

5th May 2011, 11:27 AM	#17
phoenix87 diyAudio Member Join Date: May 2010	sorry guys a bit late .......................... busy with the new pcb release of the smps neways currently i can give a double sided board layout for this smps with a pfc ....... any body interested ........... i am currently working on the single sided board its gonna a bit of time........ regards phoenix

5th May 2011, 11:28 AM	#18
phoenix87 diyAudio Member Join Date: May 2010	wanna sneak peak at the single sided board...................