Electronics > Beginners

Fly back SMPS, please evaluate.

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--- Quote from: Benta on December 02, 2021, 11:48:54 am ---The MC44603 is obsolete. Apart from that, it's optimised for TVs, not really a general purpose part.

--- End quote ---

May be.. I did repair man stuff for decades up to 90s..
no surprises my choices and generic stuff is biased..

Nevertheless.. it is always handy having classics which can be found today..
The rated power and specs of this IC are generic enough for that..

But sure we have newer stuff..



--- Quote from: magic on December 02, 2021, 11:30:35 am ---MC44603 is crap. Its built-in transistor can't switch mains voltage and it lacks several features to conveniently and safely drive external MOSFETs: UVLO, push-pull output, primary peak current limiting.

--- End quote ---

UC38xx is more used in generic SMPS PSU units indeed.
It can still be seen inside a lot of standard SMPS.

Nevertheless even the APPNOTE schema does not use the IC driver
directly.. it is always a multi stage driver and an external driver
can handle whatever mains needed..

It should be a simple choice..
several base examples available



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