Emerson Network Power has launched two ultra-compact AC-DC front-end power supplies that meet the 80 Plus Platinum Standard for efficiency. Rated at 750 watts and 1100 watts continuous output, the power supplies share the same form factor, providing the scalability that system designers need for long life cycle applications where power requirements may change in the future.
Designed primarily for space-constrained, high availability applications such as ‘always on’ enterprise servers, Emerson’s new 750 watt DS750PED and 1100 watt DS1100PED power supplies are both housed in 1U high rack-mounting enclosures measuring just 3.4 x 7.7 inches (86.3 x 196.5 mm). This form factor is significantly shorter than that of similarly rated earlier-generation power supplies – freeing up valuable system space – and is achieved by use of the latest power switching technology and high density component packaging techniques. Both power supplies combine a conversion efficiency of 94 percent peak with a high power density; the DS750PED provides up to 16.4 W/in3 (1 W/cm3), while the DS1100PED can deliver 24 W/in3 (1.46 W/cm3).
Capable of operating from any input voltage in the range 90 to 264 Vac, the power supplies use active power factor correction to maximize efficiency and ensure compliance with the international EN 61000-3-2 standard for harmonic current emission. The DS750PED and DS1100PED have a power factor of at least 0.9 for all load conditions from 20 percent to full output. This simplifies the design of power distribution systems that use current sharing to boost output or active redundancy to increase fault tolerance, by ensuring paralleled power supplies operate at peak efficiency even when only partially loaded.
Datasheets: DS750PED and DS1100PED