Go Down

Topic: Looking for options: Small, bare AC/DV 12V 1.5A PSU (Read 1 time) previous topic - next topic

brucethehoon

I need to throw a 12V 1.5A power supply into a box that's roughly 5"x5"x3" and still have room for a board I've been asked to make.   The board can be as small as .5"x3" depending on how tight I've got to make those components. Luckily, I've got very small chip options.

I've looked for transformers that will fit in a case that size, and while I've seen dozens of switching power supplies that are that small, I've not been able to find a transformer rated at my needed current levels that's small enough (and preferably pcb mounted) to handle the job.  I've used EI-30 form factor transformers for lower power jobs and have been happy, but at 2VA, they're obviously unsuitable.

Anyone have any favorite options?

thanks!

retrolefty

Must the supply be mounted inside the box? If this box is going to be AC wall outlet powered anyway not something like this:

http://www.allelectronics.com/make-a-store/item/PS-1228/12-VDC-1.5A-SWITCHING-POWER-SUPPLY/1.html

Lefty

brucethehoon

Unfortunately, the transformer etc must all be inside the same (small) box as the MCU itself.   Shielding and other concerns are going to have to be dealt with. 


brucethehoon

Thanks - I had looked at those earlier.   I'm looking for (essentially) as small a version of THIS as possible:
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1919051_-1

It just strikes me that with the rather large number of (smaller than this) wall warts that are in the 12v/1.5A range, that there might be smaller (than this) units out there bare like this.

Go Up