300W SMPS design .............. fully tested - Page 2 - diyAudio
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Old 27th April 2011, 10:51 AM   #11
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hello sir .

looking very nice ...

thank u ...
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Old 27th April 2011, 10:55 AM   #12
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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
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Old 27th April 2011, 10:56 AM   #13
Qmara is offline Qmara  Indonesia
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what about multi o/p like +/-55 and +/-110 or +/-70 with 2200-3000watts ?
anybody build ? i'm very interested with that SMPS.
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Old 27th April 2011, 11:10 AM   #14
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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.
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Old 27th April 2011, 11:21 AM   #15
viki_v2 is offline viki_v2  India
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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
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Old 28th April 2011, 06:09 PM   #16
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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?
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Old 5th May 2011, 12:27 PM   #17
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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
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Old 5th May 2011, 12:28 PM   #18
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wanna sneak peak at the single sided board...................
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Old 5th May 2011, 12:33 PM   #19
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so here it is






regards
phoenix
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File Type: jpg smps.jpg (124.8 KB, 568 views)
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Old 5th May 2011, 02:15 PM   #20
viki_v2 is offline viki_v2  India
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Quote:
Originally Posted by phoenix87 View Post
so here it is






regards
phoenix
waiting for more details
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