2 months ago
Does anyone know of any power supplies designed to run on 12V DC input?
Most RVs and off-grid power systems revolve around a 12 V DC system, due to the nature of the typical battery components. These systems typically power everything in the system with the DC system, and can include an inverter to provide normal 120V AC power to specific plug-ins. Likewise, in many areas people prefer to avoid having any 120V AC wired into the house as that brings with it a lot of electrical code requirements that don't exist for DC wiring. And electrical code requirements generally means getting expensive specialists out into rural areas.
Given that it seems inefficient to convert 12 V DC power into AC just so that it can be fed into a PSU that will convert it back into a variety of DC voltages (including 12V), it seems like a fairly significant amount of efficiency could be gained by having a PSU designed to run on 12V DC that can directly convert the power into the appropriate voltages.
On the same lines, skipping the AC back to DC step inside the PSU, I would think could reduce the amount of heat being produced inside the PSU.
So, the gist of all that is: Does anyone know of any PSUs designed to run on 12V DC power systems?
Ideally, I am looking for a 550W PSU at 80+ Gold or better efficiencies, but given that I haven't found any yet, I will consider anything.