White Papers

Techniques to Deal with Beat Frequencies Caused by Paralleling DC-DC Converters

December 6, 2013
By

Power system designers are frequently required to develop solutions that provide more power than can be delivered by a single converter. Paralleling is a common technique, where the outputs of more than one converter are linked together to increase output current, and therefore output power. One problem with this approach is the generation of beat frequencies on the inputs of the converters.

Read more »

New white paper: high-voltage DC distribution is key to increased system efficiency and renewable-energy opportunities

August 13, 2013
By
New white paper: high-voltage DC distribution is key to increased system efficiency and renewable-energy opportunities

The pressure throughout the energy supply chain to deliver electrical power more efficiently is intense and growing.  Partcularly given the enormous growth in high load applications such as datacenters. The latest white paper from Vicor highlights how a transition to 400 VDC for power transmission and conversion offers tangible and significant benefits for both sourcing options and system performance

Read more »

How Adaptive Cell Topology Benefits AC Applications

June 11, 2013
By

With the wide variation in AC line voltages around the world, universal power supplies are typically designed to accept 85VRMS to 264VRMS inputs. This range has imposed significant design trade-offs on the power factor corrected AC rectification typically used in front end converters. The Vicor PFM isolated AC-DC converter with PFC, and the AC Front End Module both have Adaptive Cell™ topology at their heart, providing a breakthrough in AC front end power factor correction that addresses these trade-offs to provide a consistently efficient solution. It does so by introducing innovation at three different...

Read more »

Designing Power Distribution Networks for Automated Test Equipment

January 3, 2013
By

The demands on power architectures designed for automated test equipment (ATE) applications have increased dramatically as these systems become more complex. Only a few years ago, many ATE systems used simple “silver box” supplies, but this is no longer a sustainable approach. Modern ATE circuitry requires more power to operate, whilst voltage and current requirements span a wide range. At the same time, these power systems need to accurately and quickly modulate various voltage rails in order to completely characterize the performance of a device under test (DUT). The power system has therefore become...

Read more »

Optimising Processing Real Estate

October 10, 2007
By
Optimising Processing Real Estate

The drive to create metadata processing server systems plus the parallel push for increased port density and triple-play (voice/video/internet) traffic handling in telecommunication systems places greater demands on power management architectures. The problem: inefficient power architectures Traditional designs using AC to 12 Vdc Silver Box followed by 12 V to 1.x Vsynch buck have run aground in terms of system power density and efficiency due to a combination of distribution bus losses and fundamental restrictions in topology performance as processor voltages reach sub-volt levels. Higher voltage (48 V or 350/380 V) bus voltages reduce...

Read more »

Find out more about our Cool-Power Buck Regulators subscribe to vicor newsletter Contact Us

Get Connected