Powersolve is offering a couple of DC-input bulk front-end power modules designed for systems that use distributed power architectures.

The modules are additions to Emerson Network Power’s Astec DS series and feature a 40 to 72Vdc input voltage range, which makes it suitable for telecoms applications operating from 48V battery sources.

They produce a main +12Vdc output, together with an auxiliary 3.3Vdc output for applications that require standby operation.

The DS650DC and 850DC modules have power output ratings of 650 and 850W respectively. The DS850DC can deliver up to 70A at +12Vdc from its main output and up to 6A from its 3.3Vdc auxiliary output.

Both modules offer active single-wire current sharing which operates from 10 to 100 per cent of full load, enabling multiple modules to be easily paralleled for very high current applications.

The modules are all hot pluggable, and incorporate low-loss internal ORing FETs (Field Effect Transistors) on their main 12V output, for fault-tolerant and N+1 redundancy applications. They have no minimum load requirement, and maintain main output regulation to within +/-5 per cent.