Product category:
DC/DC Convertors
News Release from: Emerson Network Power - Embedded Power | Subject: DDR12
Edited by the Electronicstalk Editorial
Team on 27 November 2002
One convertor powers up DDR memory
systems
Artesyn Technologies has launched the industry's first dual-output nonisolated point-of-load convertor for DDR memories.
Artesyn Technologies has launched the industry's first dual-output nonisolated point-of-load (POL) convertor for DDR (double datarate) memories Known as the DDR12, this special-purpose POL convertor is specifically designed to provide an all-in-one power solution for DDR memory and associated control logic
This article was originally published on Electronicstalk on 4 Feb 2000 at 8.00am (UK)
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Until now, electronics designers have been forced to use two POL convertors or complex circuitry based on discrete components, to meet the power needs of DDR memory.
The new DDR12 dual-output POL convertor offers a particularly cost-effective alternative to both these approaches, by enabling both the 2.5V VDDQ supply for the DDR logic and the 1.25V DDR termination voltage (VTT) to be derived from a single, compact module.
It is estimated that this dual-output POL will allow designers to reduce implementation costs by as much as 40%.
Further reading
Artesyn extands 24V DC/DC range to 30A
Artesyn Technologies has added a new member to its BXB family of industry standard, half-brick DC/DC converters.
New standard in efficiency from DC/DC Converters
Artesyn Technologies has introduced the EXB30 series of high-efficiency, single-output, open-frame, isolated DC/DC converters.
The DDR12 is the latest in a new generation of technologically advanced products that Artesyn is developing for the rapidly expanding nonisolated point-of-load convertor market.
It employs leading-edge synchronous rectification techniques and has a high conversion efficiency - typically 85% - when operated at half-load or greater.
The 2.5V VDDQ output can deliver up to 25A, while the 1.25V VTT output can deliver up to 8A; both voltages are trimmable from 90 to 110% of their nominal value.
Suitable for use with all DDR-SDRAM devices, the DDR12 convertor is packaged as a small footprint, vertically oriented module suitable for use in 1U-high rack-mount applications.
Typically, these would include workstations, servers and communications infrastructure equipment, as well as general-purpose computing and industrial applications.
Designed for operation from a nominal 12V supply rail, the DDR12 dual-output POL convertor features a wide input range that is capable of accommodating any voltage from 10.8 to 13.2V DC.
The 2.5V VDDQ output offers remote sense capabilities, has a fast 8A/us transient response, and is fully protected against overvoltage conditions.
Both outputs feature overcurrent protection, and the convertor also offers remote on/off facilities and a 'power good' output signal as standard.
DDR12 POL convertors employ an open-frame, single-board construction to minimise cost and weight, and to simplify thermal management.
Designed for semi-automated assembly, the convertors make extensive use of SMT components, and feature single-inline connections intended for through-hole board mounting.
The vertically oriented package has an above-board height of just 30.5mm and a small footprint of 76.2 x 12.9mm, making it easy to accommodate on tightly packed PCBs.
Artesyn's DDR12 dual-output POL convertors have an operational temperature range of 0 to 80C, with derating.
They carry a full set of international safety approvals, including EN60950 (TUV Product Service) and UL/cUL60950.
Pricing for 10,000-piece quantities is US $16.75, and the standard lead time is stock to 6-8 weeks.
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