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| 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.. --- End quote --- Their price is bananas. --- End quote --- 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 --- End quote --- 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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