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posted in February 2007
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Voltage supervisors provide 26 programmable trip points
Product News  
2/28/2007   Post a comment
Intersil introduced two voltage supervisor ICs, the ISL88016 and ISL88017, which offer 26 pin-selectable voltage trip points along with functions including power-on reset (POR) control, supply voltage supervision, and manual reset assertion in a small 6-pin TSOT package. Both devices are designed for low power consumption as well as accuracy in portable and battery-powered applications.
GreenPoint printer power-supply reference design is 83% efficient
Product News  
2/28/2007   Post a comment
ON Semiconductor unveiled its latest GreenPoint reference design for 40-W power supplies used to power desktop printers. Providing active-mode energy efficiency above 83% when delivering an output power between 5 and 40 W, the reference design achieves a no-load power consumption of 150 mW.
MOSFETs improve power efficiency
Product News  
2/28/2007   Post a comment
Toshiba has expanded its power semiconductor line with the first products in a new family of high-speed switching MOSFETs that are said to significantly improve power efficiency for synchronous DC/DC converters.
Dual input Li+ charger eliminates external MOSFETs
Product News  
2/27/2007   Post a comment
Maxim Integrated Products introduced the MAX8677A, dual input USB/AC-adapter linear charger with Smart Power Selector for portable devices powered by rechargeable single-cell Li+ batteries.
Power-over-Ethernet DPA-switch has 10-W rating
Product News  
2/27/2007   Post a comment
Power Integrations extended its DPA-Switch DC-DC IC family with the 10-W DPA422, which enables designers to develop efficient power supply designs for power over ethernet (PoE) applications.
High-frequency 75-V MOSFET driver sinks and sources 2 A
Product News  
2/27/2007   Post a comment
Vishay Intertechnology announced the release of the SiP41111 high-frequency 75-V half-bridge n channel MOSFET driver IC that delivers a 2 A peak sink and source gate-driver current.
Synchronous step-down DC/DC converter delivers up to 500 mA
Product News  
2/27/2007   Post a comment
Linear Technology released the LTC3563, a high-efficiency, 2.25-MHz, synchronous buck regulator that can deliver up to 500 mA of continuous output current from a 2- x 2-mm DFN package. Its output voltage is pin-selectable to either 1.28 V or 1.87 V.
Micrel joins Z-Allliance
News & Analysis  
2/27/2007   Post a comment
Power-One and Micrel jointly announced availability of the full line of Z-One compatible low dropout (LDO) regulators.
DC/DC converter eliminates heat sink requirements
Product News  
2/26/2007   Post a comment
A fixed five-volt output DC/DC converter, housed in a hybrid SIP package, from BI Technologies, eliminates the need for a heat sink while saving board space.
Dual-channel buck controller features high switching frequency, outputs up to 30 A
Product News  
2/26/2007   Post a comment
Semtech Corp. announced the SC2447, a DC-DC step-down (buck) controller for DrMOS™ power devices. The SC2447 is a 1 MHz synchronous PWM buck controller designed to drive DrMOS™ power devices in compact, high-efficiency DC-DC power converters for telecom, datacom, switches, routers, and other high-end applications.
Hot-swap capability added to XPhase family for multi-phase DC-DC buck converters
Product News  
2/26/2007   Post a comment
International Rectifier introduced another chipset into their XPhase family of control ICs and phase ICs for scalable multi-phase, interleaved buck DC-DC converters, adding N+1 redundancy, hot-swapping capability and a host of protection features.
PMBus Consortium unveils new spec simplifying system-wide power management
News & Analysis  
2/26/2007   Post a comment
The Power Management Bus (PMBus) Implementers Forum today introduced version 1.1 of the open communications interface specification for the control of power systems. Look for enhancements for managing system power supplies, and more.
Power conversion platforms help reduce IT equipment power consumption
Product News  
2/26/2007   Post a comment
ColdWatt introduces a flexible digital power conversion platform that combines density and high efficiency targeting IT managers and system designers.
High power silicon carbide Schottky rectifier targets inverter applications
Product News  
2/26/2007   Post a comment
Cree introduces a zero recovery Schottky rectifier to improve power inverter efficiency for solar and wind power applications
How to design a Li-Ion battery charger to get maximum power from a solar panel
Design How-To  
2/24/2007   1 comment
Solar power is now used for a much wider range of consumer applications including mobile phone chargers. Unfortunately, power available from a solar panel is heavily dependent on the operating environment. Find out what you need to know to get and keep a charge.
S-MOS family suitable for DC-DC converters in cellular phones, digital cameras
Product News  
2/23/2007   Post a comment
Toshiba America Electronic Components has expanded its power semiconductor lineup with a selection of low on-resistance small-signal MOSFETs (S-MOS) suitable for high-speed switching devices or DC-DC converters in portable electronics equipment.
Photovoltaic, wind inverters deliver energy-harvesting capabilities
Product News  
2/23/2007   Post a comment
Power-One introduces the Aurora PVI-6000 series of photovoltaic and wind inverters. These grid-tie products utilize two high-speed, independent MPPT (max power point tracking) channels to optimize energy harvesting in installations with multiple PV arrays oriented in different directions.
Convection-cooled power supply offers 6.9 watts per cubic inch density
Product News  
2/23/2007   Post a comment
XP Power announced availability of the SDS150, a convection-cooled power supply that is suited for IT and industrial applications where space is at a premium and there are no internal fans. Both open-frameand U-channel models can be used in 1U customer applications.
Single-port midspan unit powers remote, gigabit PoE wireless LAN access points
Product News  
2/22/2007   Post a comment
Microsemi Corporation released an addition of a single-port gigabit power over Ethernet (PoE) midspan power unit to its PowerDsine product portfolio.
ORing-FET controllers reduce power loss
Product News  
2/22/2007   Post a comment
TI introduced a family of ORing power controllers that improves power distribution in 12-V blade servers, N+1 telecom systems and redundant, low-voltage processor power supplies.
Two-wire stand-alone fuel gauge reports battery capacity without learn cycle
Product News  
2/22/2007   Post a comment
The DS2786 open-circuit-voltage (OCV) based fuel gauge, released by the Dallas Semiconductor division of Maxim, estimates the available capacity of rechargeable Li+ batteries using a combination of an OCV battery model and coulomb counting.
2.5 MHz, 40 V dual step-down DC/DC converter delivers 1.4 A per channel
Product News  
2/22/2007   Post a comment
Linear Technology announced the LT3508; a dual-channel current-mode PWM step-down DC/DC converter with two internal 40-V, 2 A power switches,/ packaged in a 24-lead, 4mm x 4mm QFN or TSSOP-16E package. Each channel is capable of delivering 1.4 A of output current.
Back to the basics of power MOSFETs
Design How-To  
2/22/2007   Post a comment
We design with them all the time but do we know what makes them tick? Get the details that will help you make better design decisions.
Using a power-distribution switch to drive LEDs
Design How-To  
2/20/2007   Post a comment
Here's how to implement constant-current drive, which provides consistent output and control of LED intensity
MIT demonstrates analog circuits that lower the power bar, targets consumer electronics
News & Analysis  
2/20/2007   Post a comment
MIT engineers have devised new analog circuits that eliminate operational amplifiers while maintaining virtually all benefits of operational amplifier-based circuits.
ORing Controllers protect server and telecom power systems from transient events
Product News  
2/20/2007   Post a comment
ORing-FET Controllers from Texas Instruments reduce power loss, protect N+1 and redundant power supply systems
First-ever Power Architecture Developer Conference focuses on in-depth technical training, demonstrations
News & Analysis  
2/20/2007   Post a comment
There's exciting news from Power.org about the inaugural Power Architecture Developer Conference to be held September 2007 in the live music capital of Austin, Texas.
Data center study finds soaring energy usage
News & Analysis  
2/15/2007   Post a comment
U.S. data centers consumed the equivalent of the power generated by five 1,000-kilowatt power plants in 2005, according to an energy consumption study commissioned by Advanced Micro Devices Inc.
Data center energy consumption has doubled since 2000
News & Analysis  
2/15/2007   Post a comment
The energy consumed by data center servers and related infrastructure equipment in the U.S. and worldwide doubled between 2000 and 2005, according to a new study.
How solid state relays help control transient immunity, improve power efficiency
Design How-To  
2/14/2007   Post a comment
In order to improve power efficiency, performance and reliability, understanding isolation is essential especially when designing applications with low- and high-current. circuitry.
Power converter boosts battery life in portables
Product News  
2/14/2007   Post a comment
Texas Instruments offers 27-V DC/DC converter that integrates input/output isolation, high-current switch and diode to simplify power design.
RFMD expands DC/DC converter line
Product News  
2/14/2007   Post a comment
RF Micro Devices has introduced a pair of low noise, high efficiency DC/DC converters for mobile communication devices— the RF9003 and RF6280.
Signal generator module features four phase synchronous channels
Product News  
2/12/2007   Post a comment
Novatech Instruments released its model DDS9m signal generator module, which features four phase synchronous sine wave outputs up to 170 MHz, serial control, 500 MHz external clock input along with an on-board TCXO (temperature compensated crystal oscillator), stable to 1.5ppm.
Power entry modules designed for PCB mounting
Product News  
2/12/2007   Post a comment
Schurter's series DD21 and DD22 power entry modules have been designed for PCB mounting. The DD21 product is equipped with multiple functions including inlet connector, switching and fusing. In addition, the DD22 series offers standard or medical filter versions.
AC-DC power supplies handle 960 watts
Product News  
2/12/2007   Post a comment
Lambda has expanded its NV family of environmentally-friendly AC-DC power supplies, adding a product series that can supply up to 960 watts. The NV-700 series is suitable for use in high-density medical, industrial and test-and-measurement equipment. Units measure 1.6 x 4.92 x 10.8 inches and accept all existing and newly-developed NV power modules.
Wall-mount switchers offer interchangeable AC plugs
Product News  
2/12/2007   Post a comment
The 2K6S series of wall-mount switching power supplies from Advanced Power Solutions consumes minimal AC current under no load conditions for Green Power Compliance.
Designing low-power multiprocessor chips
Design How-To  
2/12/2007   Post a comment
Just 10 years ago, the challenge chip designers faced was to design logic blocks with as few gates as possible to fit all the functions in a target die size. Today, advancements in semiconductor process technologies let designers easily pack millions of gates and complex mixed-signal components into a single chip. Nonetheless, chip designers still face the challenge of reducing the number of gates and imple-

Startup targets mobile phone health hazards
Product News  
2/12/2007   Post a comment
With the mobile communications industry’s biggest annual bash just opened in Barcelona, a year old company tried to dampen proceedings by warning of the health dangers of wireless communications and suggested it has the technology and product to protect people from the potentially harmful effects of radiation emitted from mobile devices.
Determine the performances of resistor technologies in surge/overload conditions
Design How-To  
2/12/2007   Post a comment
When specifying a resistor for a specific application, such as power supplies, it is important to consider not only the capabilities of each resistor technology but also their characteristics under surge conditions. Here's what you need to know.
mPhase Smart Nanobattery to offer safe disposal
Product News  
2/9/2007   Post a comment
mPhase Technologies says the Smart Nanobattery it is developing could include features that would allow it to be disposed of safely. The company has applied for patent protection for a set of design strategies to create "green" batteries that use advanced chemistries but are still safe to dispose.
Vicor expands mid-power mini-module family with 100- and 150-W versions
Product News  
2/9/2007   Post a comment
Vicor Corporation announced the addition of nine mid-power mini DC/DC converters to the 24 Vdc input family: a 100 W model at 3.3 Vout, 150 W models at 5, 12, 15, 24, 28, 36, and 48 Vout.
Solid-state methanol proposed for fuel cells
News & Analysis  
2/9/2007   Post a comment
Kurita Water Industries developed solid-state methanol for DMFC to solve the difficult points of liquid methanol as fuel for the cell. First application as battery chargers will hit the market around this summer.
"Anode'r' way" -- Why the anode yields better results
Design How-To  
2/7/2007   Post a comment
Rechargeable battery technologies have issues about life, safety, recharge time, power delivery, extreme temperature performance, and environmental friendliness. Learn the strengths/weaknesses of the competing battery technologies and what happens at the negative/positive electrodes at varying temperatures. Here's a look at what improvements occur with changes to the anode including a longer battery life and the elimination of thermal runaway.
Quarter-brick DC/DC modules feature high efficiency
Product News  
2/6/2007   Post a comment
Ericsson Power Modules has expanded its PKM-E series with three quarter-brick DC/DC modules that provide additional output voltage ranges, higher current, and more power for telecommunications and data equipment at about a 25 percent lower cost.
PRM handles 48 V power applications
Product News  
2/6/2007   Post a comment
Vicor Corp. introduced the P045F048T32AL; a high-power (>1100 W/in.3) 320-W pre-regulator module (PRM) for 48-V power applications including servers, telecom and ATE. The device provides a controlled factorized bus distribution voltage for powering downstream VTM current multipliers.
Industry's first energy harvesting modules introduced for wireless sensor networks, others
Product News  
2/6/2007   Post a comment
Advanced Linear Devices introduces energy harvesting modules designed specifically to capture, accumulate and store power from a variety of energy harvesting sources and supply it to wireless sensor networks, remote controls and other applications.
Nokia investment arm backs Summit Microelectronics
News & Analysis  
2/5/2007   Post a comment
Power management IC specialist Summit Microelectronics Inc. has raised a further $10 million with the growth financing round led by Nokia Growth Partners, the later-stage focused investment arm of the Finnish mobile handsets market leader, which invested $4 million.
How to control input ripple and noise in buck converters
Design How-To  
2/4/2007   Post a comment
A number of relatively simple methods are available to reduce input noise and its impact on other devices. This article describes these sources of input noise and ripple and some basic methods to attenuate its occurrence.
EPRI unveils major energy-efficiency research initiative
News & Analysis  
2/4/2007   Post a comment
Electric Power Research Institute unveils a project aimed at transitioning to a smart power delivery, operation, load management system.
Cooling solution extended to 70 kW, adds control for energy savings
Product News  
2/2/2007   Post a comment
The new InfraStruXure InRow RP from American Power Conversion lowers energy costs by varying cooling capacity with heat load requirements
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