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Is the efficiency of a DC DC converter Load independent? (www.meanwell.com)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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I'm currently looking into various DC DC converters and was confused that the Meanwell DDR-60 series only shows a typical rating but says nothing about the efficiency at idle. From AC/DC converters I'm used to have a curve that starts at idle and maybe 70% and goes to 100% load, having the peak at ninetee something.

(Edit: link goes directly to the PDF)

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[–] [email protected] 2 points 1 year ago

Even on the equipment where you do get a graph of efficiency vs load, the line usually only starts at 10% load - that's where your 70% efficiency figure is for.

As noted, at 0% load efficiency is by definition 0%.