Electronics > Projects, Designs, and Technical Stuff
LT3081 Parallel Different Sources
digsys:
--- Quote from: jmoschetti45 --- ... Polyfuse and some sort of clamp?
--- End quote ---
Only limited by imagination and how complex / functional you want to achieve. Your selection is a definite start - and would look like this -
- In normal OR operation - the Polys provide adequate balancing (higher current > warmer poly > Vdrop > channel settles down)
- Regulator (channel) fails short - OR gate applied
- Regulator (channel) fails open - Zener / latch etc operates, Poly heats rapidly and latches. At this point you can get as fancy as you like, and it depends on WHAT failure mode you're expecting of the regulator. ie provide an over-ride Vset back to it? Kill it completely? Attempt 1-2 restarts? etc etc
The circuit I posted does have limitations, it's a start reference. If your "load" can tolerate a ~1V short term fluctuation, then you have heaps of simple options.
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