MOSFET or bipolar, which should you use?
Design How-To 1/28/2005 Post a comment
MOSFET or bipolar, which should you use? Recent developments in bipolar transistors position the technology to rival or exceed MOSFET performance in many applications. Here's an article to help you review the characteristics and benefits of each technology to extract the best system performance.
POLs pack power punch
Product News 1/28/2005 Post a comment
Artesyn Technologies' ultracompact SIL30E and SMT30E point-of-load (POL) converter modules deliver up to 30 amps at 0.8 to 3.63 volts for densely packed ASICs, network processor and DSP applications. That's 75 percent more current than provided by comparably sized products, according to the company. The two-phase, 2-MHz synchronous buck converters, for use in distributed power architectures with an 8-14 volt intermediate bus, are fully compatible with similar products from members of the Point-O
UPS hails "triple-play" performance
Product News 1/27/2005 Post a comment
Eaton Corporation bills its Powerware 9155 as a breakthrough, (on-line) double-conversion uninterruptible power system (UPS) that provides 8 to 15 kVA in four models for mission-critical applications. It's touted as a "triple play" step-advance in technology, user-friendly design and cost-effectiveness that resets industry standards in customer value and product performance.
Backup system powers remote sites via landline
Product News 1/19/2005 Post a comment
Valere Power's Line Power Solutions family extends battery backup from a centralized source to a remote location via unused telephone lines to support "triple-play" voice, video, and data service offerings and wireless access points.
Tough 3-phase inverter takes on the marines
Product News 1/18/2005 Post a comment
Absopulse Electronics' CTP1500-R series, a ruggedized (DC/AC) inverter, delivers a 1500 VA three-phase output at 50, 60 or 400 Hz for marine environments and industrial and aviation ground support equipment, and fuel cell, solar cell, and wind power conversion applications. The microprocessor-based, high frequency PWM system synthesizes sinusoidal outputs of 208, 380 or 415 VRMS (phase-to-phase) from a 24, 28, 48, 125 or 250 VDC input. Total harmonic distortion at full load is less than 5 perce
The need for inexpensive non-isolated PoE dual power supply solutions
Design How-To 1/17/2005 Post a comment
Power Source Equipment like Hubs with Power over Ethernet capability are emerging and any of these applications are very price sensitive. To serve the powered devices with a supply voltage of 3.3V or 5V, it is necessary to have a buck converter that scales down the available input voltage from the power source equipment. The author details how you can develop one.
A comprehensive solution for VoIP protection
Product News 1/14/2005 Post a comment
MGE UPS Systems introduces a comprehensive uninterruptible power supply solution for Voice over IP networks. It includes a UPS for protecting the supplies to the active components and terminals, supervisory software, services and power supply for VoIP phones using Power over Ethernet midspans.
DOSA and PMBus initiative join forces
News & Analysis 1/14/2005 Post a comment
Tyco Electronics Power Systems and SynQor, the founding members of the Distributed-power Open Standards Alliance (DOSA), announced an alignment with the Power Management Bus (PMBus) initiative led by Artesyn Technologies Inc., as part of a migration effort to digitally-interfaced on-board DC/DC power architecture.
DC/DCs offer 30 watts in a 1-by-2 package
Product News 1/12/2005 Post a comment
Broadening its DC/DC product offering, Wall Industries' CG Series, in a 1-by-2-by-0.4 inch package, delivers up to 30 watts in five models for general purpose applications. That power capacity in modules of this kind is equivalent to what's usually seen in a 1.6-by-2 inch package, according to the company, and thus the converters claim a 38 percent savings in board real-estate.
Front-ends boost high-density distributed power
Product News 1/11/2005 Post a comment
With a 1U-by-2U rack profile (1.57-by-3.07-by-12.03 inches), the DS Series of AC/DC front ends from Emerson Network Power (Astec Power Division) is equipped to deliver 450, and 550 watts for high-density data storage, medical and industrial applications. The supplies provide a main 12-volt output and a 3.3-volt standby output.
AC/DC supplies maintain a new silence
Product News 1/7/2005 Post a comment
Touting silent and efficient operation at the higher powers, Antec's TruePower 2.0 line of 380-550 watt AC/DC power supplies for PCs sports an audible noise level of only 21 dBA. The supplies include a 120 mm fan that runs at the lowest speed appropriate to load and conditions, helping to achieve the optimum balance between noise reduction and necessary cooling.
Air Distribution Architecture Options for Mission Critical Facilities
Design How-To 1/6/2005 Post a comment
Server consolidation projects, along with the shrinking physical size of servers and storage systems, has resulted in high power density and high heat density. Even though the typical per-enclosure power consumption in a data center remains on the order of 1kW, equipment may be configured that draws over 15kW per enclosure. This strains the capability of the average data center.
Galaxy Power joins DOSA
News & Analysis 1/5/2005 Post a comment
Galaxy Power Inc. has become the latest member of the Distributed-power Open Standards Alliance (DOSA), joining a slew of power suppliers in the almost year-old industry alliance.
Advanced MOSFETs boost DC/DC performance
Product News 1/5/2005 Post a comment
Toshiba America Electronic Components (TAEC) has added eight new 40-, 60-, 100-, 150-, 200- and 250-volt single n-channel devices to its SOP Advance MOSFET family to improve the performance of medium-power DC/DC converters.
Half-brick for PoE touts high efficiency
Product News 1/5/2005 Post a comment
Touting high efficiency— 92.5 percent at full load—Advanced Power Conversion's H201 series DC/DC converter complies with the IEEE 802.3af standard to deliver 200 watts at a regulated 52.5 volts
Bipolars do motors a good turn
Product News 1/4/2005 Post a comment
Zetex Semiconductors introduces its newest bipolar transistors, the ZX5T851Z NPN and ZX5T951Z PNP devices that tout efficient high-current operation for DC motor control applications.
Digital Multiphase Power for CPU Cores
Design How-To 1/3/2005 Post a comment
The relentless march of technology toward ever increasing CPU speed and performance is taxing today's power systems. Digital Multiphase Power from Primarion and Intersil may be the first architecture that meets key performance requirements for current and future needs.
Power surge - worldwide analog market report
Special Report 1/3/2005 Post a comment
Power management continues to quietly outperform several of the more celebrated product markets, including microprocessors. The power management industry continues to deliver strong results that matches the performance of the overall semiconductor market.