Beyond simple MOSFET selection
Design How-To 10/31/2006 Post a comment
Today's higher speeds, currents and lower voltages plus secondary effects increase losses in power conversion. Because of this, selecting a MOSFET for the synchronous buck converter is not a trivial exercise and requires a solid methodology to select the best combination coupled with good understanding of loss mechanisms. Here's what you need to know.
Energy harvesting will power growth -- but which ones?
News & Analysis 10/31/2006 Post a comment
An upcoming report by Darnell on ultra-low-power wireless components explores energy harvesting and micro-power generators, and is available for sponsorship. The report quantifies the market for these components by application and identifies the markets that are commercially viable.
Sony details notebook battery recall program
News & Analysis 10/25/2006 Post a comment
Sony announced the details of its global replacement program for lithium ion notebook batteries, hoping to close the book on a nightmare chapter that analysts said would do inevitable damage to Sony's battery market share.
Japan trade group forms laptop battery task force
News & Analysis 10/23/2006 Post a comment
TOKYO — The Japan Electronics and Information Technology Industries Association (JEITA) has formed a task force on its PC vendors' committee to set guidelines for safety use of lithium ion batteries in notebook PCs.
Members of the task force include all PC vendors that used the troubled batteries, other than Apple Computer Inc. The task force, which plans to work closely with battery vendors, will soon get under way and plans to make a report by the end of the year.
Sony recalls Vaio batteries
News & Analysis 10/20/2006 Post a comment
Sony this week issued a recall of batteries for its Vaio notebook computers. The company revealed that the total number of its lithium-ion batteries to be recalled has reached 9.6 million units from a total of eight notebook PC vendors and some other peripheral product vendors.
Adapters are CEC compliant
Product News 10/18/2006 Post a comment
Phihong USA offers a complete line of desktop and wallplug adapters that meet the specifications for external power supplies as required by the California Energy Commission as of January 1, 2007.
Wales to host first Dye Sensitized Solar Cell plant
News & Analysis 10/18/2006 Post a comment
A recently established renewable energy company, G24 Innovations Ltd, is planning to build the first plant to make dye sensitized solar cells (DSSC) on a commercial scale at a facility in Cardiff, Wales. The eventual investment into producing the so called 'solar foils' could be between £60 million and £75 million and the project could create 300 jobs.
Khosla stumps for solar, California ballot initiative
News & Analysis 10/17/2006 Post a comment
The big opportunity for solar energy is in utility plants, according to Vinod Khosla. The iconic venture capitalist who has started his own alternative energy investment company also stumped for California's Proposition 87, which would fund research into so-called clean technology.
1-watt DC/DCs extend reliability
Product News 10/13/2006 Post a comment
MicroPower Direct's D100EHI series of miniature 1-watt SIP converters, an extension to the company's D100E Budget Saver series, touts significantly higher input-to-output isolation and reliability for tight installations.
3-amp POLA regulators tout size, cost edge
Product News 10/9/2006 Post a comment
Ericsson's PMD series of 3-amp DC/DC (non-isolated) converters, a low-current extension to the company's point-of-load offerings, are touted as among the smallest and most-cost effective of their kind in the industry.
How to ease EMI compliance in power converters
Design How-To 10/8/2006 Post a comment
Switch mode PWM power converters generate conducted and radiated EMI and can corrupt the power source. Here's a power management design method to reduce the magnitude of the switching currents at the frequencies where there is a risk of EMI non-compliance.
Tear Down: Inside the Apple 8GB iPod nano
Teardown 10/8/2006 Post a comment
What makes the new 8GB iPod nano are the "mystery chips" that have been widely speculated about. These three Apple packaged components in the latest iPod nano have telltale marks that unequivocally prove the manufacturers.
Go green young designers
Power DesignLine Blog 10/4/2006 Post a comment
The need for energy is a constantly growing demand, especially as more countries become energy hogs like the US. Data centers are now prime targets for power management because energy demands are growing dramatically.
PoE systems jack up their flexibility and firepower
Product News 10/4/2006 Post a comment
Product recap - Significantly expanding their overall flexibility, the latest slew of chips and modules for serving a maturing power-over-Ethernet (PoE) technology demonstrate yet higher levels of integration, more power per port, and system costs across the board that are dropping to half that of the previous generation.
Charger's reference design clamps down on surge protection
Product News 10/2/2006 Post a comment
Focusing on protection against lightning strikes and other over-voltage transients, Power Integrations' RDK-83 reference design kit for energy-efficient charger/adapters, based on its LinkSwitch-LP family of integrated circuits with EcoSmart technology, feature a constant-voltage (CV) charger capable of withstanding 10 kV common-mode/2 kV differential-mode surges.