I remembered someone posted a DC-DC convertor chip recently, but I can’t find it back. I though it was @Jon_Burroughs or +Robert Atkins?(pointing to persons in Google+ sucks, why it doesn’t simple point to people in this group).
I’m looking for a DC-DC suggestion that can support 8-9A 5V and supports an input of 12V (or higher). I want to put it on my PCB design.
@Robert_Atkins has to remember the name of those units, he was the one who had used/seen them.
something like this?
I dont think there’s a “chip” like a lm7805 volt. regulator that large in amps.
If you do a search for “UBEC” on aliexpress or amazon you’ll find some things that might work for your application. For instance, here’s a gadget that puts out 5V @ 5A for $10 http://www.amazon.com/NEEWER®-U-BEC-Switching-5-24Nimh-Output/dp/B00EWFMDKO/
Thanks for the suggestions. However it was an “on print” component as I remember. Maybe some extra parts need to be added, that’s no problem.
I was now looking at this: http://www.ti.com/product/tps53318
However I was curious if the other part would be a good alternative.
Oh sorry, I misread and didn’t see you wanted a chip. Yes, you want a buck converter. They all work pretty much the same. The main external parts you’ll need to supply are an inductor and a FET. That TI part you mention looks pretty good. These chips will all be surface-mount. If you’re hand-soldering, try to get something not in QFN or other leadless package. Those can be a pain. You’ll need to make a PCB for it. Doing high-frequency, high-power switching power supplies on a breadboard will not work.
(and just FYI for anyone playing with those UBECs, the part in many of them UBECs is something like this: http://www.monolithicpower.com/DesktopModules/DocumentManage/API/Document/getDocument?id=583 )
Thanks. I’m now trying to make a surface-mount PCB. I thought the component that was shown here sometime had already some external parts (like a coil what it seems from the picture) build in. The less I have to place on the PCB the better.
It’s these I’ve linked before if you want 10A @ 5V: http://power.murata.com/data/power/okr-t10-w12.pdf
And if you want 20A @ 5V: http://us.tdk-lambda.com/ftp/specs/iaf.pdf
I haven’t used either, so please do report back if you try either of those out. I get the sense that switching power supply design is a black art, so if you can use a pre-built module (UL et al certified, probably won’t explode and burn your house down) you probably should.
Thanks that was the one I was looking for. Maybe I’ll try this one, which I can place on a chip. http://nl.mouser.com/ProductDetail/Murata-Power-Solutions/OKY-T-10-D12P-C/?qs=JV7lzlMm3yLOOktEWmRoaw%3D%3D
I’m designing a PCB with APA102 leds, RFDuino and some power supply to bake in a reflow oven (at least the prototypes). I don’t want to solder that many components.