Electronics > Beginners
SMPS chip but not for 240V?
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FriedMule:
I have tried to learn about buck converters, with the goal to learn how you convert from 240V to 5V but I keep running into chips for low voltage except a few for 600V-1000V. Even Davids "jelly bean"  MC34063 is for max 40 voltage. Where do the 240V go in, is 40V fine, I seem not to understand how it all can be.

Hope thay uoy please will help? :-)
james_s:
While high voltage buck converters do exist, that topology is not particularly common for such applications. There are lots of power conversion ICs out there intended for converting mains voltage down to low DC voltages.
FriedMule:

--- Quote from: james_s on September 04, 2019, 03:57:08 am ---While high voltage buck converters do exist, that topology is not particularly common for such applications. There are lots of power conversion ICs out there intended for converting mains voltage down to low DC voltages.

--- End quote ---
Thanks, but is that the way a standard SMPS do it?
oPossum:
Typically flyback or forward converter.
FriedMule:

--- Quote from: oPossum on September 04, 2019, 05:42:44 am ---Typically flyback or forward converter.

--- End quote ---
I have hard of these terms but do not understand how it all works, how does Dave's jelly bean at max 40V handle 240V?
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