Electronics > Projects, Designs, and Technical Stuff
Isolated DC/DC converters "unregulated"?
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coppercone2:

--- Quote from: Ice-Tea on December 25, 2019, 04:30:39 pm ---
--- Quote from: NANDBlog on December 25, 2019, 04:19:03 pm ---
--- Quote from: Ice-Tea on December 25, 2019, 03:49:52 pm ---Have you considered ADUMs from analog devices? They are, AFAIK, regulated and you have them in a lot of flavors, including high speed isolated data lines..

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Their price is bananas.

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For the "full solution"? I suppose so, might have something to do with the fact it's a LT product. But combining a isolated CAN tranceiver with their cheapest iso power chip sets you back 3.5$, which is not terrible. And I would assume you can do better if you go through a distri and have some volume to show..H

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its a small solution
Simon:
Well I'm going to leave isolated CAN for now. I'll make this module non isolated along with some other interfaces and then do a dedicated isolated CAN module.
Simon:
This wurth unit will probably be the best solution: https://www.we-online.com/catalog/datasheet/17791063215.pdf priced at a tenner rather than 25 quid and is regulated.
T3sl4co1l:
Yeah, typically the tiny ones are literally a two-transistor chopper, a toroid transformer (usually) and rectifier.  Don't forget a minimum load, either.

How much voltage and current do you really need for a CAN driver?  Who cares if it sags a volt or two at full load?  There are 3V CAN drivers.

Tim
Simon:
Well it's supposed to be 5V, I think the 3.3V ones just come in on spec for the thresholds but I'd be wary. With 5V into 120 ohms each end of the line that is a healthy 83mA
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