Product category:
DC/DC Convertors
News Release from: Emerson Network Power - Embedded Power | Subject: SIL30E and SMT30E
Edited by the Electronicstalk Editorial
Team on 21 January 2005
Convertors boast higher POL current
density
Two new series of ultracompact 30A point-of-load convertor modules aim to overcome the problems of colocating high-current, low-voltage sources with the silicon devices they are powering.
Artesyn Technologies has launched two new series of ultracompact 30A point-of-load convertor modules for use on densely packed PCBs The convertors enable designers to overcome the problems of colocating high-current, low-voltage sources with the silicon devices they are powering
This article was originally published on Electronicstalk on 4 Feb 2000 at 8.00am (UK)
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The new SIL30E vertical-mount modules occupy a board area of less than 4cm2, while the new surface-mount SMT30E modules are only 8.1mm high - making them perfect for systems with tight card pitches.
Both series of products feature exceptionally high current densities - the SMT30E, for example, achieves in excess of 8.3A/cm3.
SIL30E and SMT30E nonisolated POL (point-of-load) convertors accommodate output voltages from 0.8 to 3.63V and can deliver up to 30A - which is at least 75% more current than any comparably sized competing product on the market.
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.
Artesyn releases 2000 Power Supply Handbook
Comprehensive catalogue features wide range of new AC/DC and DC/DC products.
The convertors form the latest additions to Artesyn's family of POLA products, which now includes 52 models spanning a current range of 5 to 30A.
This wide product choice facilitates precise application matching and simplifies migration to higher current convertors when needed.
By replacing two 15A POL convertors with a single 30A model, for example, designers can now achieve a 50% saving in board real estate and reduce their bill of materials by up to 40%.
Artesyn's SIL30E and SMT30E POL convertors are fully compatible with similar products produced by other members of the Point-Of-Load Alliance - which includes Texas Instruments, Astec Power of Emerson Network Power and Ericsson Power Modules - offering users considerable sourcing flexibility, long-term security of supply and support for very high volume applications.
The SIL30E vertical-mount POL convertor features a single-in-line package with a footprint of just 50.8 x 7.8mm and a height of 12.7mm.
Its surface-mount counterpart, the SMT30E, has an industry-standard 33 x 13.5mm footprint and an above-board height of only 8.1mm.
The small physical size and very low internal power dissipation of these convertors enable designers to maximise system performance by placing them immediately adjacent to the load - even on very densely packed boards.
They are particularly suited to high-end applications in the telecommunications and data communications markets, such as optical switches and high capacity network routers.
Intended primarily for boards that use distributed power architectures with an intermediate 12V bus, Artesyn's SIL30E and SMT30E series POL convertors provide designers with an extremely flexible means of handling different voltage conversion requirements.
They have a wide input voltage range of 8 to 14V, enabling a variety of isolated bricks and intermediate bus convertors to be used for generating the bus voltage, as well as supporting a 12V AC/DC power architecture.
Furthermore, even when delivering their full 30A current, the convertors have a very wide output trim range of 0.8 to 3.63V, accommodating the core and I/O low-voltage supply needs of many of the latest ASICs, network processors and DSPs.
SIL30E and SMT30E series POL convertors use innovative power conversion techniques to preserve efficiency at high current levels.
Their design is based on a two-phase synchronous buck topology, using interleaving to achieve a very high equivalent switching frequency of up to 2MHz.
The advanced driver circuitry and power switches for each phase are contained in highly-integrated multichip packages, and use the latest-generation trench MOSFETs, which have a very low drain-source resistance.
The driver control circuits are optimised to provide very tight interphase synchronisation, and particular attention has been paid to the convertors' layout to ensure even heat distribution between the two phases.
The overall effect of the convertors' topology is to maximise efficiency and useable power: both series of convertors achieve 92% at 12V in, 3.3V out.
A further advantage is that the high switching frequency minimises the number of external capacitors that are needed, and allows the use of smaller, lower profile magnetic components.
The convertors employ an open-frame, single-board construction to minimise cost and weight and simplify thermal management.
They are constructed entirely from surface-mount components, including the magnetic devices, and are designed for fully automated assembly to help keep manufacturing costs as low as possible.
Both series of convertors are suitable for forced air or convection cooled environments and accommodate a wide operational temperature range of -40 to +85C ambient, with derating.
The SIL30E, for example, can deliver its full 30A output current at temperatures up to 60C, subject to a liner airflow of 60m/min.
Artesyn's SIL30E and SMT30E POL convertors feature remote sense and remote on/off facilities, have no minimum load requirement, and are comprehensively protected against overtemperature and short-circuit conditions.
The convertors carry a full set of international safety approvals - including EN60950 (TUV Product Service) and UL/cUL60950.
In OEM quantities of 1000, unit prices are US $23 for both the vertical-mount SIL30E and the surface-mount SMT30E.
Standard lead-time for both models is stock to 6-8 weeks.
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