Good day everyone,
I've been lurking here for quite some time, but this is my first post. So first off, Hello!
Now, my question.. I'm a hobbiest/tinkerer, and I design a lot of little gadgets (most of them even work!). I have a need, however, for something that is outside of my field of knowledge.. An Off-Line SMPS..
This may or may not be tricky - not sure, but here are the requirements..
85ish - 265ish VAC 50/60Hz Input
48V DC @ 2A Output (100W) Continous
Those are the basics.. Now, the more tricky parts..
Cost is very much an issue. I intend to release my whole design (including the SMPS) for free, but I hate giving things away that end up costing a forture to build.
Size is equally an issue. PCB Footprint is somewhat important, but height even more so. This has to fit in a pretty slim case, so big tall transformers are out of the question.
Has to use off-the-shelf components. When other hobbiests go to build this, they should be able to order all of the parts from a digikey/mouser/etc type of place.
Any help anyone can provide in pointing me in the right direction would be hugely appreciated.
As for the output of the supply.. I will be honest, it doesn't have to be the most stable thing in the whole world.. a little ripple or sag is not going to hurt this application at all. Ripples that would normaly be considered huge and rediculous are acceptable here.. 1-2V is even ok, so hopefully that might ease the cost and size a bit.
Thanks again!
Ben
I've been lurking here for quite some time, but this is my first post. So first off, Hello!
Now, my question.. I'm a hobbiest/tinkerer, and I design a lot of little gadgets (most of them even work!). I have a need, however, for something that is outside of my field of knowledge.. An Off-Line SMPS..
This may or may not be tricky - not sure, but here are the requirements..
85ish - 265ish VAC 50/60Hz Input
48V DC @ 2A Output (100W) Continous
Those are the basics.. Now, the more tricky parts..
Cost is very much an issue. I intend to release my whole design (including the SMPS) for free, but I hate giving things away that end up costing a forture to build.
Size is equally an issue. PCB Footprint is somewhat important, but height even more so. This has to fit in a pretty slim case, so big tall transformers are out of the question.
Has to use off-the-shelf components. When other hobbiests go to build this, they should be able to order all of the parts from a digikey/mouser/etc type of place.
Any help anyone can provide in pointing me in the right direction would be hugely appreciated.
As for the output of the supply.. I will be honest, it doesn't have to be the most stable thing in the whole world.. a little ripple or sag is not going to hurt this application at all. Ripples that would normaly be considered huge and rediculous are acceptable here.. 1-2V is even ok, so hopefully that might ease the cost and size a bit.
Thanks again!
Ben