48V-24V : DC-DC converters / Boosters

The DC-DC converters from 48 V to 24 V They power 24 V equipment from a 48 V battery bank. They are mainly found in professional marine applications and in commercial vehicles, where the main power source is 48 V but the on-board electronics remain 24 V.

What happens if the converter runs out of power?

It doesn’t fail suddenly: it goes into limiting mode and the output voltage drops. The symptoms are confusing — equipment restarting, relays clicking — and the problem is often blamed on the battery when it is actually the converter that is at fault.

Size the circuit based on the simultaneous current draw on the 24 V side, allowing a margin of 25 %, and check the inrush current of whatever you are powering. See the range of DC-DC converters.