Posts Tagged ‘ telecom ’

A Power Solution for Line Cards

Power systems have been thought of as a commodity in applications such as line cards. Increasing density means that this lack of focus makes it difficult for power engineers

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The PFM and AIM Meet Height Constraints of PBX Application

May 27, 2016
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The PFM and AIM Meet Height Constraints of PBX Application

The PowerBlog has covered the benefits of the low profile packaging we offer for our range of power components, and recently they came to the rescue of a customer

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The PFM Enables Small Cellular Base Stations

March 9, 2016
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The PFM Enables Small Cellular Base Stations

Consumers and businesses expect cellular network coverage to be ubiquitous. In offices, shopping centers and other busy locations, they are no longer prepared to accept dropped calls or even slow data rates. To fill in gaps in coverage, mobile operators – and increasingly businesses themselves – are installing small cells.

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Communications Applications No Longer Need Isolated Bus Converters

Communications Applications No Longer Need Isolated Bus Converters

Communications infrastructure equipment has traditionally used lead-acid batteries as a backup supply, which requires the batteries to power a positive referenced 48 V distribution system to avoid corrosion (cathodic protection). As this -48 V supply is used to power +48 V electronics, isolation between the batteries and the communication electronics is required. So the use of isolated bus converters became standard practice in these applications. With modern communications systems merging with server technology, and the communication portion moving from electrical to optical systems, today’s equipment can use negative referenced+48 V backup, meaning isolation is...

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Bodo’s Power Features Vicor Article Explaining the Move to +48 V in Communications Systems

May 28, 2015
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Bodo’s Power Features Vicor Article Explaining the Move to +48 V in Communications Systems

The latest issue of Bodo’s Power features an article written by Chester Firek, senior product marketing manager at Vicor, describing how telecoms and datacoms equipment manufacturers have migrated from -48 V to +48 V power systems, allowing them to take advantage of power components developed for other markets, particularly data center servers. In the past -48 V was selected because it reduced the vulnerability to corrosion caused by crude charge-control systems, humidity, and poor ventilation in the battery rooms of that era. With better environmental controls, power system designers can move to +48 V and take...

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Back to Basics: Using Hot Swap to Minimize Downtime

June 25, 2014
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Back to Basics: Using Hot Swap to Minimize Downtime

Given the critical role of modern telecommunications and data communications equipment, maximizing its online availability must always be the first priority. Clearly, any equipment’s availability depends critically on that of its power supply. Fortunately, close to zero power system downtime can be effectively achieved by combining two techniques – redundancy and hot-swapping. In this back-to-basics post we will see how these work together, and how systems can be designed for hot swapping. Consider for example a rack-mounted telecommunications system comprising modules plugged into the rack’s backplane, with a total power requirement of 120 W...

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Video Interview with Embedded Control Europe

April 4, 2013
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Video Interview with Embedded Control Europe

At Embedded World 2013 Vicor introduced the PI34xx series of Cool-Power ZVS Buck Regulators optimized for 12 V operation (8 V to 18 Vin).

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