1U distributed power front-end

Emerson Network Power produces three series of 1U high ac-dc front-end power supplies for systems that use distributed power architectures (DPA) and intermediate bus architectures (IBA).

The HPS35 series of 1U high ac-dc front-end power supplies comprises three 350 watt models, each with a single output of 12, 24 or 48 Vdc. Up to four power supplies can be fitted in a standard 19-inch rack to provide a total output power of 1,400 watts. The power supplies feature a wide-range ac input and active power factor correction, and are comprehensively protected against fault conditions.

The DS series of 1U high ac-dc front-end power supplies currently comprises 12 different models, with individual power output ratings from 450 watts to 2,000 watts. Most of these power supplies are available with a choice of wide-range ac inputs or dc inputs, and are designed to produce a main 12 Vdc output and a secondary 3.3 Vdc (optional 5.0V dc) standby output. Three of the models within the series produce 48 Vdc outputs. The latest additions to this popular and expanding range of power supplies feature PMBus™ compliant control and monitoring functions.

The UFE series of 1U high digitally programmable ac-dc front-end power supplies are very high power density units. There are currently two models in the series – a 24 Vdc output model with a power rating of 1,300 watts, and 48Vdc output model with a power rating of 2,000 watts. Both power supplies have an exceptionally compact 5.5 x 10.7 inch footprint and a height of just 1.6 inches, enabling up to three supplies to be contained on a single 1U high 19 inch rack-mounting chassis.