Bus Converters process up to 200 W in BGA package.

Press Release Summary:

Based on VoI Chip (VIC) surface-mount power components, 48 to 12 V Bus Converter Modules suit Intermediate Bus Architecture (IBA) applications. VICs process up to 200 W, acting as functional building blocks to create flexible factorized power system. Power density is 800 W/in.³, while efficiency exceeds 96% over load range. Speed and transient performance allow units to respond to 100% step load changes in less than 1 µsec.

Original Press Release:

Vicor Unveils VoI Chip Bus Converters

Raises bar for power density, efficiency and speed in Intermediate Bus Architecture applications

Andover, MA, May 14, 2003...Vicor Corporation (NASDAQ: VICR) today has introduced the first family of products based on its new VoI Chip ball grid array (BGA) surface mount (SMD) power component. The new family consists of 48 V to 12 V Bus Converter Modules (BCM) for conventional Intermediate Bus Architecture (IBA) applications. The VoI Chip BCMs provide breakthrough performance relative to classic brick bus converters at a fraction of the cost.

The VoI Chips (VICs) of Factorized Power, a disruptive technology recently launched by Vicor, can process up to 200 Watts in a small and light power BGA package. VICs are functional building blocks deployed as SMD components to create a flexible factorized power system. Conventional IBA applications are supported by narrow input range VIC models.

The 200 Watt BCM Model B048K120T20 requires only 0.85 x 1.26 inch (21.5 x 32 mm) of board space, less than 1/3 the board area of intermediate bus converters in Quarter Brick style packages. Available in two mounting styles, it has an above-the-board height of only 4 mm (in-board mounting) or 6 mm (on-board mounting). Power density is 800 Watt/in3, five times better than Quarter Brick bus converters. And, unlike conventional switching regulator ICs, BCMs do not require external parts to perform their function. The B048K120T10, rated at 100 Watt, and B048K120T15, rated at 150 Watt, support lower power applications in the same VIC package.

Efficiency exceeds 96% over a wide load range. The VoI Chip BGA power component is easily cooled through its Junction-to-Case and Junction-to-BGA thermal paths. The 100 Watt B048K120T10 requires no discrete heat sink in a typical application with 200 LFM of 55 deg.C air. The B048L120T20, with its optional integral pin fins, is capable of full load operation at 200 Watt with 300 LFM of 80 deg.C air.

The VoI Chip BCMs have exceptional speed and transient performance, responding to 100% step load changes in less than 1 microsecond. BCMs reduce or eliminate the need for costly and life-limited tantalum or aluminum electrolytic bypass capacitors required to hold up the output of low frequency, low bandwidth bus converter bricks that are as much as 100 times slower, thus providing further savings in board space and total system cost.

Employing a unique ZCS/ZVS topology with a fixed, multi-megahertz switching frequency, VoI Chip BCMs are relatively free of input and output noise, eliminating costly and bulky input filters.

The VoI Chip BCM power component is designed for surface mounting and is compatible with standard re-flow soldering processes, as commonly utilized for 1 mm pitch BGA or other contemporary SMD packages, thus avoiding the separate through-hole soldering operation required of classic bricks.

"VoI Chip BCMs provide unrivaled performance while significantly reducing the cost-per-Watt of power conversion, at both the component and system levels," said Andrew Hilbert, Senior Director of Product Marketing. "BCMs are the first VoI Chip products to incorporate an array of disruptive power conversion technologies which will supersede the power paradigm based on the DC-DC converter brick that Vicor pioneered in 1984. VICs will get bricks off the board."

VoI Chip Bus Converter Modules are priced as low as 12 cents/Watt in OEM quantities and will be shipped in JEDEC trays or taped and reeled for automated pick and place. Delivery is 6 weeks A.R.O. Pre-assembled evaluation boards are available for $49 and will include the BCM of your choice. Please specify by suffixing the Model Number with "-EB".

For a Data Sheet, a performance comparison and other information on the BCM, VoI Chips and Factorized Power Architecture, please visit the Vicor website at www.vicorpower.com. To order, contact Vicor Express at 800-735-6200 or e-mail vicorexp@vicr.com.

Technical Contact:
Andrew Hilbert
Senior Director, Product Marketing

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