Posts Tagged ‘ VI Chip ’

Power Supply Thermal Issues are More Important than Ever

August 24, 2015
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Power Supply Thermal Issues are More Important than Ever

It’s an old engineering story, sometimes told in jest, but often not: the power supply is the last item specified. “We’ll just have to find a supply that fits

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White Paper: A Novel Approach to Industrial Rectifier Systems

August 31, 2014
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White Paper: A Novel Approach to Industrial Rectifier Systems

AC-DC converters for industrial applications have been relying on double-stage architecture for quite a long time. A non-isolated, single- or three-phase, single- or multi-level stage typically feeds an isolated DC-DC stage, with capacitors between the two stages providing the necessary energy storage. The need for high efficiency and high density has determined the evolution of distributed power systems toward architectures that employ optimized power components. Among those power components, fixed-ratio bus converters have been developed to provide state-of-the-art performance, including components capable of 300-400V DC input that provide isolated, Safety-Extra-Low-Voltage (SELV) output. This paper,...

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The New MIL-COTS PRM® Regulator

August 28, 2014
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The New MIL-COTS PRM® Regulator

The new Vicor PRM regulator (MPRM48NF480M500A00) is based on our VI Chip® platform, and provides power density of 106W/cm3 and efficiency of 97.7%. The new regulator delivers 500W output power in the same package size as our earlier generation 120W MIL-COTS PRMs. For applications such as unmanned aerial vehicles (UAVs) this fourfold increase in power density can provide a game-changing advantage. Designers of military systems are acutely focused on achieving aggressive size, weight and power (SWAP) profiles that will give military vehicles greater agility to fulfill increasingly ambitious missions. Reducing the weight of UAVs...

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Analyze new DCMs’ Performance with PowerBench Whiteboard

June 30, 2014
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Analyze new DCMs’ Performance with PowerBench Whiteboard

We have added the new DC-DC Converter Modules (DCMs) to the portfolio of devices available on the Powerbench™ Whiteboard, allowing you to optimize and analyze power chains using these new components.

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New Power Systems Help Improve Performance of UAVs

May 28, 2014
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New Power Systems Help Improve Performance of UAVs

A recent article in ECN by Joshua Israelsohn, “Light UAVs serve both military and civilian missions”, describes how important it is to reduce weight to increase the performance on unmanned aerial vehicles (UAVs).

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EDN Europe Explains Benefits of Bidirectional Conversion for Back-up Power Configurations

May 15, 2014
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EDN Europe Explains Benefits of Bidirectional Conversion for Back-up Power Configurations

The editor of EDN Europe, Graham Prophet, recently published an article that explains how Bidirectional DC/DC conversion enables efficient back-up power configurations.

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Back to Basics: Using Remote Sensing to Ensure Accurate Point of Load Voltage Control

April 30, 2014
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Back to Basics: Using Remote Sensing to Ensure Accurate Point of Load Voltage Control

Today’s ASICs and processors typically operate on a low voltage and therefore require high current. This means that if they are placed at any distance from the power supply or DC-DC converter that feeds them, transmission losses can become an issue. Because of resistance and therefore voltage drop in the power path between the converter and load, the voltage across the load will be lower than that across the converter’s output terminals. The difference is given by I x R,

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