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News

High density AC-DC front-end power module delivers 330W 48V output in business card footprint

Vicor : 16 November, 2012  (New Product)
Vicor Corporation has announced the VI Brick AC Front End module for high, density, high efficiency AC to DC power conversion. This new module is a complete AC-DC converter which operates over the universal AC input range of 85-264V to deliver a fully isolated and PFC regulated 48V output. The product will be available through distribution at the end of 2012.
High density AC-DC front-end power module delivers 330W 48V output in business card footprint

Every electronic product or system that operates off of an AC utility line must incorporate an
AC-DC front-end to convert the AC utility voltage into the smooth DC voltage required by electronic circuitry. As the “firewall” between the utility and the customer’s electronics, a contemporary front-end must perform complex tasks - such as power factor correction and noise reduction - to meet the stringent requirements of international regulatory agencies.

In a low profile package measuring 95.3 x 48.6mm) and only 9.55mm in height, the AC Front End module provides a power conversion density of 7.5W/cm3 for a complete supply that includes all necessary components including hold-up capacitance.

The Vicor AC Front End module, with its integrated rectification, filtering and transient protection, enables customers to configure a complete front end system that meets IEC 61000-3-2 harmonic noise and Class B EMI conducted emission limits supplying 330W to external output storage capacitance. Its comprehensive performance features help simplify regulatory certification processes and streamline power system designs.

With its proprietary Double-Clamp ZVS high switching frequency topology, the AC Front End module achieves consistently high efficiency - up to 92% - across its entire AC input voltage range, including operation down to 85VAC and claims to cuts power losses by more than 50% compared to competing offerings. The AC Front End also simplifies the customers’ cooling requirements, reducing both the size and cost of cooling components.

“This AC Front End module based on performance- proven VI Chip technology now expands Vicor’s brick product line into AC-DC applications.” said Rob Russell, Vice President, Brick product line, Vicor.

The new VI Brick AC Front End module is compatible with a wide variety of downstream
DC-DC power conversion components including Vicor’s VI Chip and VI Brick converters. When used with downstream DC-DC converters which support secondary-side energy storage and efficient power distribution, the AC Front End module provides power system performance and connectivity from the wall plug to the point of load and enables reliable and cost-effective power systems to be designed.

Vicor’s new VI Brick AC Front End modules will be available in consumer (-20 to 100C), telecom (-40 to 100C) and military (-55 to 100C) temperature grades.

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