Emerson Network Power Unveils Highest-Wattage 12V Distributed Power Supply
Emerson Network Power announced an enhancement of its highest-wattage 12V front-end distributed power supply, the DS2900. Expanding Emerson’s DS line of distributed power solutions, the new DS2900 is well suited for use in high availability telecommunications applications and a variety of enterprise networking environments, including server farms and large storage systems.
The Emerson DS2900 is rated for up to 2900W of adjustable output power at 240A. In addition to the 12Vdc output, it features as standard a 3.3Vdc auxiliary output for powering standby circuitry and an optional alternative 5.5Vdc auxiliary output. The compact 2 x 3U form factor of the DS2900 offers customers a high system-level power density of more than 24W per cubic inch. As with many Emerson power supply solutions, the DS2900 features market-leading typical operating efficiency of approximately 91% at 50% load. The power supply’s shorter form factor also enables mid-plane rack configurations, while same-side ac inputs and dc outputs allow hot-plug rack configuration.
The power supply accepts a wide input voltage range of 180 to 264Vac with no minimum load requirement and is equipped with active Power Factor Correction (PFC) rated at 0.99 typical to minimize input harmonic current distortion. It also features active ac inrush controls – limiting inrush current at power-on to 55A – and is protected against overvoltage conditions up to 130%.
The DS2900 is equipped with a compact (40 by 28mm), variable speed "smart" fan supported by integrated controls to enhance the product’s energy efficiency and reliability. To minimize unplanned downtime and enhance serviceability, the DS2900 features both N+1 redundancy and internal ORing controllers. The DS2900 supports a wide operating temperature range of zero to plus 50°C and when used under normal operating conditions (25°C ambient at full load), it offers a high demonstrated mean time between failures (MTBF) of more than 500,000 hours. To provide customers with real-time test, monitoring and configuration functionality, the power supply is digitally programmable and fully compatible with Emerson Network Power’s PMBus™ graphical user interface software via an I²C communication interface bus.
The power supply complies with EN55022 and FCC part 15 Level "A" EMC standards for conducted noise, including all applicable immunity standards. It also carriers UL/cUL60950 safety approvals and is compliant with Restriction of Hazardous Substances (RoHS) directives.
Emerson Network Power’s DS2900 front-end distributed power supply is now available and is competitively priced at $526 per unit in production quantities.
