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posted in November 2007
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Maximizing AC/DC efficiency from full-load to no-load
Design How-To  
11/30/2007   Post a comment
Here's how valley-voltage switching and pulse-skipping techniques in a quasi-resonant flyback converter help maintain high efficiency across the supply's entire load range
300-V IGBTs offer power MOSFET replacement
Product News  
11/30/2007   Post a comment
IXYS Corp. has released a new generation of fast 300-V IGBTs that may be used as an alternative to 300-V power MOSFETS.
DC/DC converter modules meet COTS requirements
Product News  
11/30/2007   Post a comment
VPT Inc. has added three DC/DC converter modules to its new commercial off-the-shelf (COTS) product line.
Ceramic capacitors feature ultra-high-capacitance values
Product News  
11/30/2007   Post a comment
Kemet has expanded its surface-mount MLCC product portfolio in the C0G dielectric with the addition of more than 80 part types that offer ultra-high-capacitance values with the stability and performance of a Class 1 dielectric.
ST unveils power MOSFET to boost power-supply efficiency
Product News  
11/30/2007   Post a comment
European chipmaker STMicroelectronics NV has introduced a low micro-Ohm ON-resistance power MOSFET aiming to reduce losses and improve efficiency in demanding power supply systems.
Front-end power modules deliver high power density
Product News  
11/29/2007   Post a comment
Emerson Network Power has launched four DC-input bulk front-end power modules for systems that use distributed power architectures.
NIST on road to perpetual motion with 'superfluidity' demo
News & Analysis  
11/29/2007   Post a comment
The National Institute of Standards and Technology demonstrated a "persistent motion" machine that harness the quantum effects of a Bose-Einstein condensate, or superfluid.
Shake your phone to check messages, battery power
Product News  
11/29/2007   Post a comment
Researchers at the University of Glasgow have demonstrated an interface that allows mobile phone users to check if the power is low or whether there are unopened messages by simply shaking the device.
High-current POLs shrink chip footprint 70 percent
Product News  
11/29/2007   Post a comment
SupIRBuck point-of-load regulators, touting 8-10 percent higher efficiency than monolithic ICs, integrate HEXFET MOSFETs and a synchronous buck control IC in a 5-by-6 mm Power QFN package
Optocoupler targets hybrid electric vehicles
Product News  
11/28/2007   Post a comment
Avago Technologies has released its automotive-grade ACPL-M46T 1 MBd intelligent power module (IPM) digital interface optocoupler for hybrid electric vehicles.
Carbon transistors touted as outperforming amorphous silicon
News & Analysis  
11/28/2007   1 comment
Georgia Institute of Technology researchers are claiming to have perfected a method of making room- temperature transistors that are 100-times faster--as fast a amorphous silicon--by fabricating their channels from thin films of carbon-60, also knows as buckyballs or fullerenes.
LEDs are 70% brighter than previous parts
Product News  
11/27/2007   Post a comment
Cree's green XLamp XR-E LEDs are 70-percent brighter than the company's previous green power LEDs.
Power management ICs set for double-digit growth
News & Analysis  
11/27/2007   Post a comment
The outlook is bright through 2012 for voltage regulators, power controllers, driver ICs, and power management units (PMUs)
Power switch delivers lower quiescent current, added protection
Product News  
11/27/2007   Post a comment
STMicroelectronics' VNI4140K quad high-side intelligent power switch saves energy by cutting on-resistance by 50 percent using new generation technology.
Mini power management device combines step-down converter, two LDOs
Product News  
11/27/2007   Post a comment
Delivering a power savings to mobile device applications, AnalogicTech has introduced the AAT2504, an adjustable 3-channel regulator that combines a step-down converter with two LDOs.
Buck converter targets Li-ion battery-powered applications
Product News  
11/26/2007   Post a comment
Linear Technology is offering the LTC3562, a quad-channel, high efficiency, 2.25-MHz, synchronous buck converter that can deliver dual 600mA and dual 400mA continuous outputs from a 3mm x 3mm QFN package.
Philips strengthens position in 'green' lighting
Product News  
11/26/2007   Post a comment
Royal Philips has entered a definitive agreement to take over luminaries company Genlyte Group Inc, creating North America's largest lighting company. With the move, Philips intends to speed the acceptance of energy efficient lighting solutions in Northern America.
Fuel cell firm raises $4 million
News & Analysis  
11/26/2007   Post a comment
Fuel cell materials company Bac2 Ltd. (Southampton, England) has raised £2 million (about $4 million) from London Seed Capital and a group called London Business Angels.
Interleaving PFC controller advances multi-kilowatt designs
Product News  
11/26/2007   Post a comment
First single-chip, two-phase CCM offering puts the wraps on ripple
Benefits of multiphasing buck converters - Part 2
Design How-To  
11/24/2007   Post a comment
Mid-level design tutorial shows the advantages of the interleaved buck topology for improving response and reducing component stresses
Chinese solar panel suppliers set to lower prices to gain share, says survey
News & Analysis  
11/23/2007   1 comment
A new report from Global Sources says nearly 90 percent of solar panel manufacturers in Greater China plan to lower or keep prices stable, despite higher polysilicon prices, to win market share.
LDO regulators tout ultra-low noise, extend battery life
Product News  
11/23/2007   Post a comment
The AS1358/59/61/62 LDO family from austriamicrosystems delivers ultra-low-noise performance.
3-phase UPS touts efficiency, flexibility benchmarks
Product News  
11/21/2007   Post a comment
36-kW system claims the efficiency of a line- interactive UPS with the stability of a double-conversion type
OSRAM to launch super-bright single-chip SMT LED
Product News  
11/21/2007   Post a comment
OSRAM Opto Semiconductors plans to launch its Diamond DRAGON super-bright LED in January 2008. The LED features brightness of up to 250 lumens, and will be available in whites ranging from 2700 K to 6500 K as well as all monochromatic colors.
Power management chip integrates charger, smart power selector
Product News  
11/21/2007   Post a comment
Maxim's latest chip features five regulated output voltages and Li+ charger with smart power control that allows a system to operate without a battery.
"Green" power switches boost quasi-resonant designs
Product News  
11/20/2007   Post a comment
PWM/SenseFET ICs in valley switched, CCM/DCM design boasts significant performance gains over discrete solutions
UPS systems deliver a scalable platform, N+1 redundancy
Product News  
11/20/2007   Post a comment
Falcon Electric has introduced its FN Series of double-conversion on-line uninterruptible power supplies, which expands the UPS Plus family's range up to 40 kVA.
M+W Zander converts chip backend line to solar fab
Product News  
11/20/2007   Post a comment
Solar cell manufacturer Solsonica SpA (Rieti, Italy) has ordered fab builder M+W Zander (Stuttgart, Germany) to convert its existing memory chip backend line into a production line for solar cells.
Actel Libero IDE v8.1 features power analysis and power-driven layout
Product News  
11/19/2007   Post a comment
Battery-life estimator in Actel Libero IDE v8.1 provides valuable analysis for portable designers.
CMOS IC drives power MOSFETs, IGBTs
Product News  
11/19/2007   Post a comment
Aimed at tough power switching applications in power systems, IXYS Corp. has launched the 5 series of 2A to 14A low-side gate drivers.
Applied buys Italian solar cell gear maker
News & Analysis  
11/19/2007   Post a comment
Applied Materials Inc. is extending its investments in companies making equipment for the solar cell industry and is buying, for $330 million in cash, privately held Italian group Baccini SpA.
Benefits of multiphasing buck converters - Part 1
Design How-To  
11/17/2007   8 comments
Mid-level design tutorial shows the advantages of the interleaved buck topology for improving response and reducing component stresses
Avnet, Emerson ink global distribution deal
Product News  
11/16/2007   Post a comment
Avnet Electronics Marketing and Emerson Network Power have signed a global distribution agreement. Under the terms of the agreement, Avnet will distribute the full line of standard and modified standard AC/DC and DC/DC power supplies produced by the Embedded Power division.
LEDs shine as replacement for lightbulb
News & Analysis  
11/16/2007   Post a comment
Researchers create a better white light-emitting diode (LED) by embedding yellow, green and red luminescent nanoparticles into a fluorescent blue polymer matrix and pump the hybrid organic/inorganic material with a near ultra-violet LED.
IPC, JEDEC to host 'green' technical conference
Product News  
11/16/2007   Post a comment
IPC and JEDEC will host a technical conference on green trends that will include environmental directives and regulations such as RoHS, REACH and EuP.
Group rolls white paper on new ESD levels
News & Analysis  
11/16/2007   Post a comment
A group has recently posted a new -- and possibly controversial -- white paper on chip-level electrostatic discharge (ESD) target levels.
An update on international power-line immunity and emission standards
Design How-To  
11/16/2007   Post a comment
Power-line standards affect product design and the ability to market products in countries and regions; understand the standards and how they impact product power-line interaction
LED driver delivers high switch current
Product News  
11/14/2007   Post a comment
Catalyst's CAT4139 LED driver delivers high switch current up to 750 mA and drives LED strings up to 22 V.
High-density power supply built for rugged applications
Product News  
11/14/2007   Post a comment
Bravo Electro Components has introduced its XUP series of modular/configurable power supplies that offers a low noise/ripple of less than 10-mV and wide operating temperature of -40°C to +75°C, two key features for sensitive equipment in harsh environments.
Adaptive dimming and adaptive boosting backlight technologies for LCD-TV systems
Design How-To  
11/14/2007   Post a comment
LCD-TV systems need to render video and multi-media images with an optimal front-of-screen performance. They have to meet many requirements, like: contrast, brightness, color, flicker, motion portrayal, viewing angle, dissipation and cost. All these items are directly related to the backlight. In this paper we will show the benefits of adaptive dimming and adaptive boosting technologies, and extend the scope to 2D backlights
Chinese firm enters solar market
News & Analysis  
11/14/2007   Post a comment
China's XinAo Group has announced its entry into the solar-cell market.
Step-up converter shrinks handheld devices
Product News  
11/13/2007   Post a comment
AnalogicTech has released a synchronous step-up converter, which offers designers high output current and low startup voltage in a compact package.
DSP-based PFC chips claim lowest harmonic distortion
Product News  
11/13/2007   Post a comment
Marvell's digitally-based 88EM8011 and 88EM8041 power-factor-correction (PFC) controllers, for universal PFC front-end boost conversion, flyback converters, AC/DC LED drivers, ballasts, and TV/monitors, claim the lowest total harmonic distortion in the industry.
Driving LEDs versus CCFLs for LCD backlighting
Design How-To  
11/12/2007   1 comment
Understand the electrical drive and thermal issues when using light-emitting diodes versus cold-cathode fluorescent lamps to backlight liquid-crystal displays
Polymer tantalum cap delivers higher voltage
Product News  
11/12/2007   Post a comment
Kemet Corp. says it has launched the industry's first 35-V rated surface-mount polymer tantalum chip capacitor.
Distribution panel offers front connections
Product News  
11/12/2007   Post a comment
UNIPOWER's DPGF1U series of distribution fuse panels with front-panel connections handles up to 160 A in a 19- or 23-inch rack. It provides distribution and overload protection for six or 12 circuits.
NETA unveils PowerTest 2008 conference website
Product News  
11/11/2007   Post a comment
The InterNational Electrical Testing Association (NETA) has established a web site at www.powertest.org as a quick connect point for conference attendees
Robust Energy - Meter Network with RS-485
Design How-To  
11/9/2007   Post a comment
Electronic energy meters steadily are replacing the historical, electromechanical meters in industrial plants and commercial buildings. Robust RS-485 differential signaling has become the preferred method of remote data transmission in these harsh and noisy environments.
Single port PoE interface chip integrates DC/DC controller
Product News  
11/9/2007   Post a comment
Silicon Labs announced what it claims is the industry's first dual-function, single-port Power over Ethernet (PoE) controller with an integrated DC/DC controller for power sourcing equipment.
Understanding nonlinear slope-compensation: a graphical analysis - Part 2
Design How-To  
11/9/2007   Post a comment
Here's an intuitive, non-mathematical look at nonlinear slope compensation in current-mode buck converters and the benefits it provides in securing stable operation across the converter's operating voltage range
Page 1 / 2   >   >>


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