Please advise what IC to use in this project

[siliconmike]

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

 

[[email protected]]

Just use a small pc power supply. Simple and ready built. You however
don't get the fun of trouble shooting it at 3am.

 

[siliconmike]

I hope for useful answer, not alternatives to the question.

 

[Charles Schuler]

MC33364 or similar should do it.

 

[Wicaksono]

Use UC3841 / UC3842 / UC3843 / UC3844

 

[petrus bitbyter]

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