any reference about redundant power circuit?

power,

Take two independent power supplies and wire the outputs in parallel. It is a good idea to use blocking diodes so that a fault in one output can't pull the other one down.

Peter

This will cause problems if the supplies were not designed to operate with no load (as one supply most certainly will)

However, the original poster said this was for an embedded project, (I'm assuming lower power requirements??) so it might be worth designing something from scratch rather than "jim robinsoning" an existing pair.

Then you can have advantages such as hot-plug capability and load sharing.

yes, The problem is that I have to design that on board, like some industrial devices which support redundant power suppliers.

Danny

"John Tserkezis" ¦b¶l¥ó news:41aee0c7$0$12876$ snipped-for-privacy@news.>

is

pull

with no

something

sharing.

What are the power requirements?

You might consider using one of those chips used by laptops so that you can have two in-feeds but one controlled output). For example, something like the MAX1774.

Andrew

the requirement is 12-36V DC

"John Tserkezis" ¦b¶l¥ó news:41aef818$0$12876$ snipped-for-privacy@news.>

Well, that's easy: you take two separate power circuits, set the voltage

If you cannot cope with the extra loss of the diodes, use MOSFETS instead.

Meindert

thanks! but any recommanded deisgn or chips?

Danny

"Meindert Sprang" ¦b¶l¥ó news: snipped-for-privacy@corp.supernews.com ¤¤¼¶¼g...

Eh, no. My advice was based on commen knowledge on electronics. I would have to look for datasheets too. So, have you googled for redundant power circuits yet?

Meindert

At what current? Are there any capacitive or inductive loads? What is the maximum ripple you can tolerate?