Power Supplies

Ultra-High-Voltage Bus Converter for SELV 3-Phase Systems

Vicor today introduced a new fixed-ratio, ultra-high-voltage bus converter (UHV BCM) to its bus converter module (BCM) portfolio. The new 700V K of 1/16 BCM offers a power level of 1.75kW and a peak efficiency of 97%, with a power density of 700W/in³. The device is available in the thermally adept 4414 (111mm x 36mm x 9.3mm) VIA package, with either a chassis-mount or board-mount option and 4.3kV of galvanic isolation.

The robust VIA package also provides integrated PMBus™ communication, EMI filtering, and voltage transient protection. These flexible modules can be easily paralleled into higher power arrays. In addition, the BCM outputs can be connected in series for higher output voltages.

BCMs power components are suited for a broad range of applications such as tethered unmanned vehicles, power distribution systems, and 3-Phase front ends.  BCMs can also be used as isolated unregulated front ends, which can then feed a multiplicity of Vicor’s ZVS PoL Buck and Buck-Boost regulators or PRMs and VTMs in a factorized power architecture.

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The new higher voltage BCMs are available in either “T-Grade” (-40˚C to 100˚C) or “C-Grade” (-20˚C to 100˚C) temperature grades.  A Mil-Grade rating (-55˚C to 100˚C) is scheduled for release by the end of 2017.

Providing dc-dc conversion after ac rectification and PFC, the 700V BCM provides a small, efficient, power component for power system designers to develop very compact and cost-effective 3-Phase systems with an SELV output. The 400- to 700-Vdc input capable device addresses nominal 380Vrms and 400Vrms input ac-dc conversion needs, commonly found in industrial applications.

Vicor Corporation
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