94% efficient 1200W power supply in 54mm form factor

November 07, 2013 // By Graham Prophet
Murata's D1U54P series of 54mm wide 1200-W front end power supplieshas efficiency of greater than 94% and a power density in excess of 28 Watts per cubic inch; these low profile units measure 54.5 x 321.5 x 40 mm and fit the industry standard 1U package format.

Their efficiency lowers cooling requirements; the design offers at least 8% more power than other devices in the same form factor. The D1U54P series comprises two models, both providing a +12 VDC 1200W output and an auxiliary +5 VDC 15W output. The power factor corrected units accept the universal AC input range from 90 to 264 VAC. Forced air cooling is provided by an internal variable-speed fan. The series features a 0 to 60C operating temperature range. The D1U54P series features hot-swapping and active current sharing for up to 8 supplies to be connected together.

Safety features include output overvoltage, output overcurrent, and self-resetting overtemperature protection. PMBus management and I 2C interface with status indicators and boot loading are also available. The D1U54P series complies with international safety standards IEC/EN/CSA/UL BSMI and CCC 60950-1 for IT equipment.

Murata Power Solutions; www.murata.eu