Re: [electricboats] Draft Schematic-Please give input

Ø  I did wonder but haven't tried to figure out if you could run the DCDC converters in parallel, do you know?

 

For sure you can parallel modules/converters that are designed to allow that.

As example: Vicor DCDC modules used in Vicor Megapac power supply racks.  The Megapac units provide a 200-250vDC rail voltage to all modules in the rack.  Individual module outputs can be connected in series or in parallel, with certain restrictions or techniques.  That's an extreme example, and only has a single DCDC input source, but fundamentally, one can have a design that allows paralleling DCDC outputs with distinctly different sources.  The challenge is to ensure current sharing of the DCDC units.  The Vicor example I mentioned will automatically current share if subsequent DCDC put into Slave mode with one unit set as Master.  But you can also passively achieve current sharing if all the DCDC outputs have very close load curves.  Certainly you want these things to be current limiting (i.e. CV/CI), current protected, voltage protected, short protected, thermally protected, etc.