Front End AC-DC Power Supply is offered in 1,050 W model.

Press Release Summary:

Intended for applications using distributed power architectures, DS1050-3 has power density of 19 W/in.³ and meets Climate Savers Computing gold standard for efficiency. It achieves 92% typ conversion efficiency at 50% full load and operates from 90-264 Vac. Generating main payload output of 12 Vdc and auxiliary output of 3.3 Vdc for powering standby circuitry, digitally programmable and hot-swappable unit also features active PFC, I²C interface, and active single-wire current sharing.

Original Press Release:

Emerson Network Power Adds DS1050-3 1050 Watt Model to Line of Gold Standard Efficiency Bulk Front End AC-DC Power Supplies

Carlsbad, Calif. - Emerson Network Power, a business of Emerson and the global leader in enabling Business-Critical Continuity(TM), today added a 1050 W model to its line of bulk front end ac-dc power supplies that meet the Climate Savers Computing gold standard for efficiency, the DS1050-3. The new power supply has a power density of 19 W per cubic inch and can achieve a high typical conversion efficiency of 92 percent at 50 percent full load.

Emerson Network Power's popular distributed power front-end power supplies - with individual power ratings up to 3,000 W - feature industry-leading efficiency and density in standard 1U, 2U or 3U form factors for applications using distributed power architectures, such as computing, storage, networking, datacom, and test and measurement systems.

The Emerson Network Power DS1050-3 generates a main payload output of 12 Vdc and an auxiliary output of 3.3 Vdc, or 5.0 Vdc as an option, for powering standby circuitry. It features a wide 90 to 264 Vac input voltage range and employs active power factor correction to minimize input harmonic current distortion and ensure compliance with the international EN61000-3-2 standard, with a power factor of 0.99 typical. To simplify incorporating the new power supply in equipment designs, it accepts the widely available IEC C14 ac input power connector.

Digitally programmable, the Emerson Network Power DS1050-3 is equipped with an I2C interface available with industry-standard PMBus(TM) communications protocol. It also contains a memory device (EEPROM) that is preprogrammed with data about the unit -
including its type, serial number and date of manufacture - to facilitate replacement in the field.

With active single-wire current sharing that operates from 10 percent to 100 percent of load, multiple supplies can be easily paralleled for very high current applications. The Emerson Network Power DS1050-3 is hot pluggable, has no minimum load requirement, and incorporates low-loss internal ORing Field Effect Transistors (FETs) on its main 12 V output, for fault-tolerant and N+1 redundant applications.

The DS1050-3 incorporates fan cooling with automatic speed control and has an ambient operating temperature range of -10 to +50 degrees Celsius, with 50 percent derating at +70 degrees Celsius. It is comprehensively protected against overload and overvoltage conditions and delivers a demonstrated mean time between failures (MTBF) of more than 500,000 hours. The power supply meets the rigorous EN55022-B and FCC part 15 Class B conducted and radiated emissions standards, and holds a full complement of international safety certifications: UL/cUL, NEMKO+ CB, EN60950, CE Mark and China CCC.

The Emerson Network Power DS1050-3 is available at the competitive price of $256 per unit in production quantities. Sample quantities are available now.

For additional information about the DS1050-3, visit

A high resolution image of the DS1050 is available at

About Emerson Network Power
Emerson Network Power, a business of Emerson (NYSE:EMR), is the global leader in enabling Business-Critical Continuity(TM) from grid to chip for telecommunication networks, data centers, health care and industrial facilities. Emerson Network Power provides innovative solutions and expertise in areas including AC and DC power and precision cooling systems, embedded computing and power, integrated racks and enclosures, power switching and controls, infrastructure management, and connectivity. All solutions are supported globally by local Emerson Network Power service technicians. For more information on Emerson Network Power's embedded power products and services for original equipment manufacturers and system integrators visit Learn more about Emerson Network Power products and services at

About Emerson Emerson (NYSE:EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to provide innovative solutions for customers in industrial, commercial, and consumer markets through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2009 were $20.9 billion. For more information, visit

Business-Critical Continuity, Emerson Network Power and the Emerson Network Power logo are trademarks and service marks of Emerson Electric Co. All other product or service names are the property of their respective owners. © 2010 Emerson Electric Co.

More from Construction Equipment and Supplies

All Topics