I have a board that has components requiring both 5v and 3.3v supply. The unit is supposed to be powered from a 12v or 24v battery. Can anyone suggest such a dual output DC/DC converter? Needs to be PCB mounted and of course inexpensive... (and should preferable handle polarity changes in source). Apart from the above, if BOM cost is to be minimized, would it be better to build it from discretes or not worth the hassle?
Thanks
how much current?
martin
Good question. I honestly don't know yet because it is still in design stage. But no great power consumption (safely less then 500mA?)
maybe:
martin
On which rail though... The answer depends massively on the relative loadings involved. One solution (for instance), would be a chopper supply delivering 5v, and a LDO, delivering 3.3. This is likely to be significantly cheaper than a dual output chopper, and if the 3.3v current is relatively low, losses will still be fairly small.
Best Wishes
Check this report at
NSR
There is ton of DC/DC in (USA):-Newark, Digikey, (UK):- RS and Farnell components catalogue, visit website and order parts. Traco version is cheapest but not the best product. Beware some output are regulated and some are not.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required