Electronic starter-alternators power hybrid vehicles Design How-To 7/8/2004 Post a comment The integrated starter-alternator saves auto power by using the alternator as a starter motor. Combining these two functions into a fully reversible electrical machine allows motorists to cut off the engine when the car sits at a traffic light, counting on the alternator to make it jump as soon as we step on the accelerator. International Rectifier's engineers give details.
MOSFET driver IC packed with protection Product News 7/8/2004 Post a comment Intersil Corporation's Endura ISL6614 is a two-channel synchronous-buck MOSFET driver IC designed with advanced protection features for high-current DC/DC converters in datacom, telecom, point-of-load and computing applications. It's designed to provide the highest protection while significantly reducing board space, parts count and costs to implement a multi-phase power solution. "The ISL6614 offers exceptional performance and cost savings in a small SOIC or near-chip-scale 4-by-4 mm QFN packag
Web-based toolkit educates power supply designers News & Analysis 7/7/2004 Post a comment Fairchild Semiconductor's web-based Offline Power Supply Toolkit helps designers to dramatically reduce design cycle times. The toolkit, found at http://www.fairchildsemi.com/designcenter, features state-of-the-art tutorials, selection tools, and design aids that address AC/DC topologies.
Reference board speeds IC-based flyback design News & Analysis 7/7/2004 Post a comment International Rectifier's IRISMPS5 is a reference design for a flyback topology that uses the company's versatile and efficient IRIS4015 integrated switcher IC. The reference design, i.e., a universal-input AC/DC supply that delivers 6 amps at 15 volts, is suited to powering such systems as LCD monitors, CD/DVD players, fax machines, printers and set-top boxes.
LCD protection device replaces 50 discrete devices News & Analysis 7/7/2004 Post a comment The Integrated Products Group of Microsemi Corp. says its new LCD protection device protects ten lines and can eliminate up to 50 discrete components. The flip chip array protects LCD interfaces from electromagnetic interference and electrostatic discharge.
Software aids A/D converter performance modeling News & Analysis 7/7/2004 Post a comment Converter modeling has often been overlooked, omitted, or done using an ideal data converter model. With more and more systems using mixed signal technology, the importance of system modeling is ever increasing. This, coupled with shortened design cycles and pressure for first pass success, drives the continuing importance of complete system modeling. Analog Devices' engineers describe a simulation program that may provide an answer this need.
Active termination reduces high-speed interface loss News & Analysis 7/7/2004 Post a comment When the Characteristic Impedance is not correctly matched at the drive, and the receiver ends, not all of the signal energy is delivered to the load, writes Andy Fewster in the July Planet Analog magazine folio. Ordinarily, the physical geometry of the conductors and insulation, determines the "Characteristic Impedance" of the transmission line. But active termination techniques can satisfy the requirements for professional audio and video applications.
Fuel cell startup raises $18.4 million in latest round News & Analysis 7/6/2004 Post a comment SRI International spinout PolyFuel, a developer of membrane technology for portable fuel cells, has closed a third round of funding totaling $18.4 million, bringing total investment in the five-year-old startup to about $40 million. From London, John Walko reports.
Gradual decline in IC growth rates seen as industry matures News & Analysis 7/6/2004 Post a comment Contrary to some predictions, the long-term growth rate for the semiconductor industry has not declined steadily to single-digit annual percentage increases, according to market research company Advanced Forecasting. The company calculated a 12-year moving average of annual growth rates for global IC revenues. It found that the historical average has been declining slowly since 1997, hovering in the 15 to 19 percent range until 2000. From London, Peter Clarke reports.
Databeans sees growth for high-performance parts News & Analysis 7/6/2004 Post a comment A new study from Databeans Inc. (Reno, NV) sees the use of high-performance parts rising at over a 30 percent annual rate in recent years. High speed analog revenue is estimated at $8.2 billion in 2003, roughly 23 percent of the $36-billion analog market.
Dual Codec - improves mobile audio experience Product News 7/6/2004 Post a comment Wolfson Microelectronics announced the third generation of its audio/touch-panel codecs. The WM9713L provides broad functionality and new levels of power-saving for the next wave of mobile communications devices.
Demodulator IC - excellent DTV broadcast reception Product News 7/6/2004 Post a comment Micronas unveiled the fourth generation of its COFDM (coded orthogonal frequency division multiplex) demodulator IC: The DRX 3973D addresses all types of atmospheric and dynamic interferences with new adaptive compensation schemes and paves the way for excellent reception in the more vulnerable DVB-T regions (Digital Video Broadcast Terrestrial), as found in fringe signal areas and indoor reception.
Cal Micro expands wafer capacity for ASIP devices Product News 7/5/2004 Post a comment California Micro Devices has entered into a wafer supply agreement with SANYO Electric Co., Ltd. to expand its wafer capacity for the company's application specific integrated passive (ASIP) devices and analog semiconductors for mobile, computing and digital consumer markets.
Flexible 400mV reference a direct hit for portable medical equipment News & Analysis 7/1/2004 Post a comment Linear Technology says its new LT6650 is the lowest voltage series reference available. The device features a built-in rail-to-rail output buffer amplifier and ±1% guaranteed accuracy from -40°C to 85°C. The LT6650 is ideally suited for portable industrial and medical equipment, plus low power instrumentation.
500-mA LDO stresses thermals News & Analysis 7/1/2004 Post a comment Advanced Analogic Technologies' AAT3239 is a low-dropout regulator (LDO) designed for high continuous load currents and with particular attention to the device's thermal characteristics for maintaining an overall high level of performance. The 500-mA source, for battery-powered applications, features fast line and load transient response, high-speed turn-on and shut-down, and a high power-supply-rejection-ratio (PSRR).
Video amps bring it all into focus News & Analysis 7/1/2004 Post a comment Video amps have seen changes in requirements from customers in the last few years especially with the growth of LCD market in cell phones and televisions. Smaller packages with less power and better matching have become very important. Paul O'Shea makes these observations.
Real-time video capture creates memory power concerns News & Analysis 7/1/2004 Post a comment As carriers and content providers usher in the wireless lifestyle, handsets will undergo an unprecedented transformation. Video capture and 3-D gaming at VGA resolution and 6-megapixel image capture will all become commonplace in the next two years. All will consumer power.
Charge pumps offer low-power backlighting News & Analysis 7/1/2004 Post a comment One drawback to the new suite of features being added to mobile phones is the higher current consumption for display backlighting. Color LCDs require white light to provide backlighting for the best clarity, and typical white LEDs consume substantially more current than the green ones used in first-generation mobile phones. A Semtech engineer offers this advisory.