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posted in August 2005
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Designing with ultra-low voltage MOSFET arrays
Design How-To  
8/31/2005   Post a comment
Using a floating gate charge, Advanced Linear Devices has perfected a way of programming the threshold voltages of MOSFET arrays. With something close to a zero-volt threshold, MOSFET switches can be turned one-or-off with a hare's breath of power. But this will force designers of portable circuits to think differently about the design of their amplifiers, voltage references and current mirrors, suggests developer Robert Chao. This article offers some insights and suggestions.
Make power management plans for the coming wave of consumer electronics
Design How-To  
8/31/2005   Post a comment
For portable consumer applications, power-optimized, mixed-signal solutions are critical for providing the needed system power management to maximize battery life. Here's what you need to know to keep ahead of consumer electronics power requirements.
Voltage tracker/sequencer ensures proper order
Product News  
8/31/2005   Post a comment
Maxim introduces dual/triple power-supply trackers/sequencers that ensure proper power-up and power-down conditions. The devices provide close-loop control of powering up to three power-supply rails.
ATX reference design meets "80 PLUS" initiative
Product News  
8/30/2005   Post a comment
ON Semiconductor touts the industry’s first open ATX power supply reference design certified to meet the so-called "80 PLUS" performance requirements for computing applications. The 250-watt reference design addresses all functional blocks of the ATX power supply, including power factor correction, switch-mode power supply control and regulation, post regulation, and output rectification.
Buck controller IC has full complement of power management features for networking
Product News  
8/30/2005   Post a comment
International Rectifier introduces a high-performance, dual output pulse-width modulator driver IC for synchronous buck DC/DC converters used in networking and communications systems.
Fuel cells available for rental
News & Analysis  
8/30/2005   Post a comment
Sandpiper Technologies Inc. has initiated a program enabling customers to rent methanol-powered fuel cell for evaluation.
AC/DC quietly delivers for light industry
Product News  
8/29/2005   Post a comment
Lambda's SCS120PW series of single-output, convection-cooled AC/DC power supplies, designed for light industrial devices and data communications routers in an environment where forced-air cooling is not available or low system noise is a top design priority, delivers 120 watts.
"Stretched" quarter-brick beats the heat
Product News  
8/29/2005   Post a comment
Bel's GALW9V647 450-watt single-output DC/DC converter, the newest addition to the company's Sirius family of board-mounted CoolConverter modules and touted as a "stretched" quarter-brick for telecom, networking, and wireless, delivers up to 47 amps at 9.6 volts from a nominal 48-volt input.
Phénomène de « polarisation de surface » sur les cellules solaires
News & Analysis  
8/29/2005   Post a comment
SunPower Corp. a indiqué avoir observé un nouvel effet de fonctionnement connu sous le nom de « polarisation de surface » sur les cellules solaires hautes performances au silicium.
International Components acquires power supplier
News & Analysis  
8/29/2005   Post a comment
International Components Corp. has acquired Elpac Electronics Inc., in a merger of companies hoping to expand their presence in the growing portable power market.
Researchers float dry fuel cells for mobile apps
News & Analysis  
8/29/2005   Post a comment
Touted as a future solution to automobile pollution, fuel cell technology may in the interim solve the portable-power problem that is pivotal to miniaturizing electronic systems.
How to integrate 3.3 and 5.5V analog and digital supplies
Design How-To  
8/28/2005   Post a comment
Decentralized control units and field bus components have analog and digital components that need both 5.5V and 3V -- with little fluctuation and disturbances in very limited real-estate. Here's one way to achieve all these requirements.
Global market forecasts examines external AC-DC power supplies
News & Analysis  
8/26/2005   Post a comment
Darnell introduces an updated 238-page report providing a detailed and in-depth examination of the external AC-DC power supply market and the trends that drive this market.
Wall plug meets low power requirements
Product News  
8/26/2005   Post a comment
Phihong introduces an Energy Star compliant CEC compliant 15W wall plug adapter.
Inductorless charge pump drives LEDs
Product News  
8/26/2005   Post a comment
Linear Technology announces a fractional charge pump, high current white LED driver that delivers up to 500mA of LED current suited for video and flash applications.
Rebranded company shows off new website
Product News  
8/26/2005   Post a comment
Power supply company, Powerstax plc, launches a new website to complete the conversion from its old company name.
DC/DC Converter, 3.5A FET brings life to big displays
Product News  
8/26/2005   Post a comment
Intersil introduces high-efficiency DC/DC converter with industry’s largest integrated 3.5A FET for display market.
Enhanced management software also accents the negative
Product News  
8/26/2005   Post a comment
Potentia Semiconductor's enhanced PowerCenter Designer software, Version 4.0, now supports the company’s complete range of second generation devices, including its latest six-rail, secondary-side power system controllers. It also provides full support for negative voltage rails.
Solar technology provider clears way for IPO
News & Analysis  
8/25/2005   Post a comment
SunPower Corp. said it has filed a registration statement relating to the proposed initial public offering of shares of its common stock with the U.S. Securities and Exchange Commission.
Triple-output supplies fill "pizza box" bill
Product News  
8/25/2005   Post a comment
Power-One's BLP55-3000 and BLP55-3300 triple-output, 55 watt AC/DC power supplies, extensions to the company's BLP55 series, are designed for 1U "pizza-box" applications where cost considerations and flexibility of the physical layout (e.g., position with respect to adjacent cooling devices)are prime design parameters.
Simplify your tracking and sequencing needs
Product News  
8/24/2005   Post a comment
Linear Technology offers a single power supply tracking controller that simplifies the tracking and sequencing requirements of complex distributed power architectures.
Intel, Matsushita team to develop 8-hour battery
News & Analysis  
8/24/2005   Post a comment
Matsushita Battery Industrial Co. Ltd., and Intel Corp. have announced they would collaborate to develop batteries able to run a notebook PC for 8 hours without recharging.
First programmable, multi-output power IC
Product News  
8/24/2005   Post a comment
Summit Microelectronics says it has the first multi-output power IC that has programmable battery charging. This is worth a look.
Portable methanol fuel cell system offers breakthrough micro-reformer technology
Product News  
8/23/2005   Post a comment
Ultracell announces a portable methanol fuel cell system that is compact and has the power density of a hydrogen fuel cell.
ON Semiconductor unveils ATX power supply reference design
News & Analysis  
8/23/2005   Post a comment
ON Semiconductor unveiled what it called the industry's first open ATX reference design certified to comply with the 80 Plus national buy-down program.
USB bus-powered devices put an end to Wall Warts
Design How-To  
8/23/2005   Post a comment
“Every system that supplies power must incorporate some kind of power limits. You don’t want your computer to go dark when you plug in a mouse,” writes a Cypress Semiconductor engineer in this month's issue of the Planet Analog magazine folio. On the other hand, plugging USB disk drive could generate some hefty current surges. Let's think about eliminating those Wall Warts, he says.
Fuel cell developer claims methanol advance
News & Analysis  
8/23/2005   Post a comment
A fuel cell developer is claiming twice the power density of lithium batteries in a new methanol fuel cell for mobile gear.
Buck-boost converters top 90% efficiency
Product News  
8/23/2005   Post a comment
The National Semiconductor LM2716 buck-boost and LM2717 buck-buck converters each reach more than 90 percent efficiency over a wide load range for extended battery life in embedded computer systems.
Compact switchers connect with datacom, wireless
Product News  
8/23/2005   Post a comment
V-Infinity says the compact dimensions of its new 1U-high, midrange switching power supplies, the VF-S150, with a footprint of just 3.2-by-5 inches and a power density of 6.25 W/in3, ideally suits them to datacom, wireless, and industrial applications.
A fast, accurate, LC compliant DC-DC boost regulator…Is it possible?
Design How-To  
8/23/2005   Post a comment
Circuit integration is a major trend in the electronics industry. For power management designs, the frequency compensation circuit is a critical roadblock since it is off-chip. A user-friendly, accurate, fast, highly LC-tolerant supply circuit is therefore in high demand. Here's a proposed bypass scheme that offers just about everything needed.
Three-in-one battery charger IC
Product News  
8/22/2005   Post a comment
A battery charger from AnalogicTech combines a charging device, reverse blocking diode, and current sensing circuit. It supports charging currents up to 1.5A across an input voltage range of 4.0 to 5.5V.
Power Conditioner for Home Solar System
Product News  
8/22/2005   Post a comment
The Mitsubishi power conditioner transforms direct current power to alternation current power reducing electric conversion loss by 18% and achieving the industry's highest power conversion rate of 95.5%.
Better way to store solar
Design How-To  
8/22/2005   Post a comment
Caltech and MIT are pursueing efficient, economical ways to store solar energy in the form of chemical bonds--an advance that is critical for using sunlight as a renewable source of fuel and chemical feedstocks.
Liquid battery power
News & Analysis  
8/22/2005   Post a comment
A research team at Singapore’s Institute of Bioengineering and Nanotechnology have developed a paper battery that is small and that ingeniously uses the fluid being tested (urine) as the power source.
TFT-LCD regulator offers a cool way out
Product News  
8/22/2005   Post a comment
Touting extremely high efficiency and thus cooler system operation, the EL7585A quad-output regulator from Intersil provides a highly integrated power source for large (19 inches and greater) thin-film-transistor liquid-crystal displays (TFT-LCDs) of the kind used in TVs and desktop monitors. Its so-called boost supply boasts the industry’s largest integrated field-effect transistor for this application, providing up to 3.5 amps.
Company reports 'surface polarization' in solar cells
News & Analysis  
8/22/2005   Post a comment
SunPower Corp. said it has observed a new performance effect, known as "surface polarization," in high-efficiency silicon solar cells.
Coast to coast power
Power DesignLine Blog  
8/22/2005   Post a comment
Trade shows are powering up in September and you won't want to miss out on discussions, technical sessions, and how-to seminars presented at two of the important events to kick-off the back to school season.
AC/DCs sign on for tight duty
Product News  
8/22/2005   Post a comment
Lambda's ZP series of small AC/DC power supplies, a wide ranging family in an industry-standard 2-by-4 inch format, are suited to low-power applications including those requiring fairly tight electrical specifications and multiple outputs. These include data communications, LED signage, and point-of-sale applications, as well as test-and-measurement equipment.
AC/DCs induce a 5-second boost
Product News  
8/19/2005   Post a comment
Weidmuller's seven new regulated DC power supplies tout enhanced capabilities beyond the company's traditional families, including an added "power boost" feature that delivers 130 percent of rated current for up to 5 seconds for inductive loads; built-in module for quick paralleling of supplies; and an alarm to provide instant visual feedback when a power supply is shut down.
Power-factor controllers ship with v.3 software
Product News  
8/19/2005   Post a comment
EPCOS has simplified the operation of power factor controllers of its BR6000 series. All products in this series now being shipped are equipped with a new v.3 software release.
Ten steps to a low cost, high performance switcher to power your FPGA
Design How-To  
8/18/2005   Post a comment
A hysteretic buck regulator circuit is shown along with a 10 step design procedure enabling you to quickly design a high performance switcher.
Asia agreements abound for Enpirion
News & Analysis  
8/18/2005   Post a comment
Enpirion signed agreements with three Asian companies to distribute its power supply solutions.
Lasers offer AC adapter option
Product News  
8/18/2005   Post a comment
BEA Lasers' 150P family of laser modules is now available as a package with the company's new AC power adapter. Alternatively, the AC adapter is available separately. The adapter plugs directly to an AC power source and provides 6 VDC for the lasers, which can deliver 3, 5, or 7 milliwatts at 635 or 650 nm (depending on model) for alignment, event/edge detection, leveling, metrology, position, robotic control, and security applications.
15-W supplies feed low-cost industrial solutions
Product News  
8/17/2005   Post a comment
MicroPower Direct's HF15W-SPL family of 15-watt AC/DC power supplies, for compact and low-cost applications, are suited to industrial/process control equipment, data acquisition equipment, test and measurement instrumentation, and telecommunications systems.
Streamlining power delivery systems for servers
Design How-To  
8/17/2005   Post a comment
With the electronic loads totaling 280 watts typical — not worst case — the fan losses are still among the largest. As part of our "power is where you find it" August issue theme, an International Rectifier engineer catalogs the places were compute server card cages and telecomm switching stations burn serious energy.
Single-port injector for Gigabit PoE touts a better way
Product News  
8/16/2005   Post a comment
Fremont, Calif.—Phihong's PSA20U single port power injector for power-over-Ethernet (PoE) applications is a module suited to Gigabit systems, i.e., 1000 Mbits/s, as well as for traditional 10baseT or 100baseT systems. Competing Gigbit injectors use special PoE transformers and the like that act like repeater amplifiers to resolve attenuation or insertion loss on the data lines, according to the company; Phihong reportedly does away with these techniques without adding significant insertion
Mammoth power supply technical guide is chock-full of major design ideas
Product News  
8/16/2005   Post a comment
Power supply specialist XP Power has published a 136-page technical guide for power supply specifiers. It spans the major aspects of power supply integration.
RAD-hard MOSFETs deliver 40% better device on-resistance
Product News  
8/16/2005   Post a comment
International Rectifier says its new line of mid-voltage RAD-hard MOSFETs can help make converters more compact and reliable than available designs.
Down converters combines switching converter and two independent series regulators
Product News  
8/16/2005   Post a comment
A DC/DC converter down converts from 24V to 5V and now 3.3V. The chip, used in series is aimed at sensor applications.
Power IC combines and simplifies design of Ethernet-powered apps
Product News  
8/15/2005   Post a comment
TI Introduces 100-V Power-over-Ethernet Single-Chip Controller for IP Phones and WLAN Systems that combines power device control with a DC/DC controller.
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