Please advise what IC to use in this project
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Please advise what IC to use in this project

 
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siliconmike
Guest
Posted: Sun Dec 04, 2005 9:35 am    Post subject: Please advise what IC to use in this project Reply with quote
I'm trying to build a cheap 12V, 4A (48W) flyback SMPS operating on 115
to 230V Mains.

Any advise for a cheap / popular controller IC ?

Thanks
Mike

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Guest
Posted: Sun Dec 04, 2005 9:35 am    Post subject: Re: Please advise what IC to use in this project Reply with quote
Just use a small pc power supply. Simple and ready built. You however
don't get the fun of trouble shooting it at 3am.
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siliconmike
Guest
Posted: Sun Dec 04, 2005 11:54 pm    Post subject: Re: Please advise what IC to use in this project Reply with quote
I hope for useful answer, not alternatives to the question.

tom@waymouth.co.nz wrote:
Quote:
Just use a small pc power supply. Simple and ready built. You however
don't get the fun of trouble shooting it at 3am.


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Charles Schuler
Guest
Posted: Mon Dec 05, 2005 1:35 am    Post subject: Re: Please advise what IC to use in this project Reply with quote
MC33364 or similar should do it.
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Wicaksono
Guest
Posted: Tue Dec 06, 2005 5:35 pm    Post subject: Re: Please advise what IC to use in this project Reply with quote
Use UC3841 / UC3842 / UC3843 / UC3844
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petrus bitbyter
Guest
Posted: Wed Dec 07, 2005 1:35 am    Post subject: Re: Please advise what IC to use in this project Reply with quote
"siliconmike" <siliconmike@yahoo.com> schreef in bericht
news:1133669695.220028.109290@g44g2000cwa.googlegroups.com...
Quote:
I'm trying to build a cheap 12V, 4A (48W) flyback SMPS operating on 115
to 230V Mains.

Any advise for a cheap / popular controller IC ?

Thanks
Mike


Mike,

Popular and cheap are the UC3842 and their look alikes. Actually one
datasheet names UCx84y where x is 1-3 and y 2-5. Several datasheets (from
different manufacturers) with examples and at least one application note on
the net. (Philips AN1272). Nevertheless IMHO your real problem will not be
the choice of the chip but the availability of the suitable transformer.

petrus bitbyter
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