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Libin
Joined: 30 Jul 2008
Posts: 2
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 30 Jul 2008 11:36 SMPS with input voltage of10V-40VDC as well 85-265VAC |
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Kindly give the concept of a wide range SMPS. The SMPS should work from an input voltage of 10V- 40VDC as well as 85-265VAC..So effectively from 10V DC to 350VDC. The output voltage requirement is 12V ( If 12V is not possible outputs can be 7V also ) Total output power is 10W. Please help me by sending valuable suggestions/ Clues or ideas.
Regards,
Libin
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download_crux
Joined: 20 Aug 2007
Posts: 26
Helped: 2
Location: INDIA
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| 30 Jul 2008 13:29 Re: SMPS with input voltage of10V-40VDC as well 85-265VAC |
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input voltage of10V-40VDC
use buck/boost converter
try this link
www.powerint.com/PDFFiles/di42.pdf
www.powerint.com
input voltage of85V-265VAC
use flyback convertor
try this link
www.powerint.com/PDFFiles/an32.pdf
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vicky.pace
Joined: 05 May 2008
Posts: 15
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| 01 Aug 2008 6:00 Re: SMPS with input voltage of10V-40VDC as well 85-265VAC |
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Hi,
See in this problem you need to use two smps in one case. !st 10-40v and 2nd 85-300. Arrange a spdt relay which can be switch over when voltages are >40.
Vicky
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Libin
Joined: 30 Jul 2008
Posts: 2
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| 02 Aug 2008 11:55 Re: SMPS with input voltage of10V-40VDC as well 85-265VAC |
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Thanks Mr.Vicky..good suggestion. But I need to think more about the cost of this method..
Regards
Libin
Added after 4 minutes:
Thanks download_crux...This is one method and its fine also..But what I am looking for SMPS with a single input connection for the full range.10V DC to 350V DC..
Regards
Libin
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som_raparty
Joined: 23 Sep 2006
Posts: 41
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| 21 Aug 2008 10:30 Re: SMPS with input voltage of10V-40VDC as well 85-265VAC |
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hi
its nice u need go wiht the two SMPS..
use a bridge at the input after the filter stage...
as usually u use the bridge for AC i/P, the output will be a rectified AC, similarly in case of the DC i/p the bridge will act like normal...
-->form the output of bridge u design a forward which can work from 40DC to 350DC giving u the required o/p.preferably use the isolation at the ferrite of the forward as it will help in the EMI/EMC
-->one more option is to use a PFC booster and then to use a forward/flyback whihc gives a more stable power supply
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