Self-powered chips - The work of fiction
Design How-To 4/28/2005 Post a comment
Emerging portable micro-power applications like sensors, and implantable electronics continue to push technology to handle small, long lasting, low-cost, and fully integrated solutions. However, there are limitations that must be overcome. Here's what one graduate program is doing to meet these demands.
Eighth-brick claims best thermal performance
Product News 4/28/2005 Post a comment
Power-One's 30-amp SQE series of eighth-brick converters emphasizes its superior thermal performance: Better, says the company, than traditional 30-amp quarter-bricks, which the new converters are designed to replace. The SQE's 1.8-volt output model, for example, delivers 29 amps at up to +70°C with only 200 lfm cooling, as compared to its full-rated output of 30 amps for 300 lfm cooling. Operating efficiency is as high as 91 percent at full load (3.3-volt model). No heatsink is required.
Increasing military needs for portable power
News & Analysis 4/27/2005 Post a comment
Jane's Information Group, an independent provider of intelligence and analysis on national and international defense, conducted a study that examines the increasing challenges faced by the U.S. Military to keep up with personal power demands of modern soldiers.
1U switchers optimize telecom fit
Product News 4/27/2005 Post a comment
Taiyo Yuden bills its AAD-130SD, the latest addition to the company's line of ultracompact switching supplies, as one of the industry's smallest for its high-current capabilities in datacom and telecom. The family delivers 130 watts nominal (144 watts maximum for 15 CFM cooling) in sixteen models. Measuring approximately 5-by-3.14-by-1.25 inches and thus suited to 1U-high applications, the AAD-130SD is offered in single- and dual-output versions.
How to measure temperature in integrated systems
Design How-To 4/25/2005 Post a comment
As processor speeds increase and draw more power, thermal management becomes an increasingly important issue. Here's how to reduce or eliminate the primary sources of error in temperature measurement so you can increase power savings efficiency of the thermal management systems.
Compact VRM serves Opteron processors
Product News 4/25/2005 Post a comment
Artesyn Technologies' VRM64-80-12-U plug-in processor power module, a fast, high-current point-of-load converter, delivers up to 80 amps at 0.8 to 1.55 volts for AMD's 64-bit Opteron server processors.
Power block simplifies synchronous buck designs
Product News 4/23/2005 Post a comment
International Rectifier's iP1203, the latest addition to the company's iPOWIR family, is a synchronous buck converter building block that achieves over 90 percent efficiency at full load. The iP1203, with relatively few external components, can deliver 15 amps at 0.8 to 8 volts from a 5.5 to 13.2-volt input to simplify DC/DC point-of-load (POL) converters that power network processor units and ASICs.
Quarter-brick bus delivers 400 watts
Product News 4/21/2005 Post a comment
Tyco Electronics Power Systems' QBK033, the latest addition to the company's QBK series, is among the industry's first 400-watt quarter-brick bus converters. The 12-volt output, 33-amp converter is suited to intermediate bus architectures in enterprise equipment, data processing equipment, and server and storage applications.
AC/DCs key on low-profile high power
Product News 4/20/2005 Post a comment
Advanced Power Solutions' new family of industrial power supplies tout 500- to 800-watt capability in a small package for industrial bulk power, distributed-power and battery-charging applications requiring from 3.3 to 48 volts (12-48 volts in the 800-watt models).
DIN supplies measure up to instrumentation apps
Product News 4/20/2005 Post a comment
Lambda's DPP series of DIN rail-mount power supplies provide a low-power source for light industrial tasks such as chemical processing, automotive, and instrumentation applications. With the emphasis on economy, the supplies, in rugged plastic cases, are available in eight models and three package sizes, delivering 15 to 100 watts at 5, 12, 15, 24, or 48 volts.
CCFL inverter sheds light on the larger displays
Product News 4/18/2005 Post a comment
Suited to the larger (19-24 inch) liquid crystal displays (LCDs) such as required in medical and industrial applications, Endicott Research's DmF6 Series of (DC/AC) inverters offers system integrators a high-power module in a compact package for powering the cold-cathode fluorescent lamps (CCFLs; in this case, up to six) used for backlighting. The series, measuring 9.52-by-2.83 inches and about 0.36 inches high, delivers up to 60 watts to meet the specifications of all leading 6-CCFL LCD panels.
PoE midspan jacks up the power
Product News 4/13/2005 Post a comment
PowerDsine's 8001 product, a single-port power-over-Ethernet (PoE) midspan module for emerging high-power applications, delivers up to 39 watts for Ethernet-connected devices such as "pan tilt zoom" (PTZ) network cameras, color touch-screen voice-over-IP (VoIP) phones, and multi-channel wireless LAN access points (WLAN APs).
What's this about all the noise?
Power DesignLine Blog 4/13/2005 Post a comment
Noise has always been a component of switched mode power supplies and as with most designs there are trade-offs you have to consider for you SMPS design. Paul Greenland, Marketing Director of National Semiconductor gives you a shopping list of items to look out for when designing with switchers, so you can minimize your trade off gotchas.
Brennstoffzellen/Akku-Kombo für Notebooks
News & Analysis 4/12/2005 Post a comment
Sanyo Electric und IBM Japan wollen künftig bei der Entwicklung von Methan-Brennstoffzellen zusammenarbeiten. Das so genannte DMFC-System (Direct Methanol Fuel Cell) soll künftig in IBMs ThinkPad-Notebooks stecken.
UPS trio extends VoIP availability
Product News 4/12/2005 Post a comment
Tripp Lite's new suite of 5-kVA uninterruptible power supply (UPS) systems for high-end server and networking hardware include the company's SmartPro line-interactive model (SMART5000XFMRXL) and two SmartOnline true on-line models (SU5000RT3U and SU5000RT3UHV). They're particularly suited to supporting voice-over-IP (VoIP) applications, where critical backup is often required for hours at a time.
Ultrakompakter Spannungsregler bis 1,3 MHz
News & Analysis 4/11/2005 Post a comment
Sipex erweitert mit dem SP7653 seine PowerBlox-Serie an winzigen Spannungsregler-ICs. Von allen Bausteinen dieser Familie ist das jüngste Mitglied für die höchste Schaltfrequenz ausgelegt und spart - dank eines wesentlich kleineren Induktors - gegenüber seinem 'nächsten Verwandten' 60 bis 70 Prozent Platz auf der Platine.
High-density AC/DCs answer telecom
Product News 4/8/2005 Post a comment
Magnetek's MM5 Series of AC/DC supplies, a line of modular multi-output power systems for compact and customized telecom, computer, and industrial applications, delivers 900 watts (universal AC input) or 1200 watts (for a 180-264 VAC input). Boasting high current-density (8.7 W/in3), the five-slot supply, measuring 2.5-by-5-by-11 inches, delivers up to 60 amps of output current per slot. That's the highest output current capacity from a single slot of any modular power supply of equiv
Front-ends graduate to 650, 850 watts
Product News 4/7/2005 Post a comment
Emerson Network Power has expanded its series of Astec DS front-end power supplies for high-density distributed bulk power with a 650-watt unit, its DS650-3. The supply, delivering up to 52 amps at 12 VDC and 3.3 VDC (standby output) at up to 6 amps from a universal AC input, incorporates full RoHS compliance and meets industry requirements for units free of tantalum capacitors. Its 1U-by-2U form factor (1.57-by-3.20-by-11 inches) enables flexible configuration to maximize the use of rack space.
Custom battery packs tout new standard for safety
Product News 4/4/2005 Post a comment
Drawing on advanced battery technology and specialized manufacturing processes, custom supplier Micro Power Electronics' new SecuraPack system checks the quality of battery inventory and battery pack construction at every step in the manufacturing process in order to deliver a defect-free lithium battery system to the OEM supplier. SecuraPack is designed to virtually eliminate in-the-field risk of unwanted chemical reactions and other electrical and mechanical malfunctions for both primary and r
PMBus, MCUs and You
Power DesignLine Blog 4/4/2005 Post a comment
"Make no mistake about it," says Don Alfano of Silicon Labs, PMBus will forever change the way system power management is implemented, and your next design won't be competitive if it isn't PMBus enabled.
Line-interactive UPS adds USB connectivity
Product News 4/2/2005 Post a comment
Extending the flexibility of its higher-power line-interactive uninteruptible power supplies (UPSes) for small and medium business applications, Hewlett Packard has equipped its HP T750 with both universal serial bus (USB) and serial connectivity for multiple configuration options.
Murata joins POLA alliance for power converters
News & Analysis 4/1/2005 Post a comment
Murata Manufacturing Co. has joined the Point of Load Alliance and announced it would team with Texas Instruments Inc. to expand a global effort to promote pin-compatible, non-isolated, point of load plug-in power modules and provide a second source based on leading semiconductor technology.
Dual PWM dials into telecom, consumer apps
Product News 4/1/2005 Post a comment
Intersil Corporation's ISL6440 is a dual PWM controller IC optimized for converting wall adapter, battery or network intermediate-bus DC input supplies into the system supply voltages required for a wide variety of datacom, telecom, and consumer products.
15-watt wall supply plugs in anywhere
Product News 4/1/2005 Post a comment
Phihong USA's PSA15R is a 15-watt AC/DC wall supply with interchangeable plugs that help to minimize OEM inventory and development costs. Plugs are available for the United States, Europe, United Kingdom, China, Argentina, and Australia.
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