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| Emerson Network Power Unveils Highest-Wattage 12 V Distributed Power Supply |
CARLSBAD, Calif. [November 10, 2009] – Emerson Network Power, a business of Emerson
and the global leader in enabling Business-Critical Continuity™, today announced its
highest-wattage 12 V front-end distributed power supply, the DS2900. Expanding Emerson’s
DS line of distributed power solutions, the new DS2900 is ideal for use in high availability
telecommunications applications and a variety of enterprise networking environments, including
server farms and large storage systems.
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The Emerson DS2900 is rated for up to 2,900 W of adjustable output power at 240 A. In
addition to the 12 Vdc output, it features as standard a 3.3 Vdc auxiliary output for powering
standby circuitry and an optional alternative 5.5 Vdc auxiliary output. The compact 2U x 3U
form factor of the DS2900 offers customers a high system-level power density of more than 24
W per cubic inch. As with many Emerson power supply solutions, the DS2900 features
market-leading typical operating efficiency of approximately 91 percent at 50 percent 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 Vac to 264 Vac 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 55 A - and is protected against overvoltage conditions up
to 130 percent.
The DS2900 is equipped with a compact (40 mm by 28 mm), 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 degrees Celsius and when used under normal operating conditions (25
degrees Celsius 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 PMBusTM
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 carries 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 available now and is
competitively priced at $526 per unit in production quantities - translating to a low relative cost
per watt of $0.18. For detailed product information or to inquire about a sample, visit
www.PowerConversion.com/products/websheet/418/DS2900.
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