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Digitally Programmable 1,200 Watt DC-input Bulk Front-End Power Supply

Emerson Network Power, a business of Emerson and global leader in enabling Business-Critical Continuity, has launched the DS1200DC-3, a high-efficiency DC-input 1,200 watt bulk front-end power supply for systems that use distributed power architectures. The new DS1200DC-3 power supply is digitally programmable via an I2C interface and is PMBus compliant. It provides a very flexible and cost-effective means of accommodating the high bulk power demands of today's networking equipment.

Developed specifically for systems co-located with telecom and central office applications operating from 48 V battery plants, the DS1200DC-3 power supply has a wide input voltage range of -40 to -72 VDC. In addition to its main +12 VDC output, which can deliver up to 100 amps continuously, the power supply also generates an auxiliary “always on” output for powering standby circuitry.

Housed in a compact plug-in rack-mounting module, the Emerson Network Power DS1200DC-3 has a 1.0 x 2.0 U form factor; it measures just 1.6 in. high by 3.2 in. wide. Use of the latest power conversion topology means that it has a very high efficiency—typically in excess of 85% at half load—and a power density of 21.7 W/in3. The power supply has an operating temperature range of -10 to 55°C and features a built-in cooling fan with automatic speed control. Forward and reversed airflow versions are available to simplify integration with the rack’s cooling layout.

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