Shift Happens Power DesignLine Blog 5/31/2005 Post a comment The combination of advanced control methods and novel power stage designs will spawn an entire new breed of power supplies that redefine state-of-the-art performance benchmarks.
AC/DC desktops fill low-power gap Product News 5/31/2005 Post a comment Ault's new PW136 external power series delivers 60 watts in nine models (3.3, 5, 7, 9, 12, 15, 18, 24, and 48 VDC) from a universal 100-250 VAC input. "OEMs will find this power supply to be versatile and popular because it delivers a range of power from 23 to 60 watts," said Greg Harris, vice president of business development."
AC/DC fits into compact networking Product News 5/30/2005 Post a comment Emerson Network Power's Astec LPS122 switching power supply, this one a high-density model in the company's LPS120 power supply family, can deliver up to 130 watts at 5 volts (with 30 cfm cooling) for networking and other rack applications.
Compact DC/DCs meet RoHS requirements Product News 5/29/2005 Post a comment The SC10N series from Semiconductor Circuits, in a single inline package measuring just 2-by-0.55-by-0.35 inches, is the company's next-generation of RoHS (restriction of hazardous substances) compliant DC/DC converters. Available in three models providing up to 10 amps at 1 to 5 VDC from a nominal 3.3-, 5-, or 12-volt input, the (nonisolated) series features a typical line regulation of 0.1 percent, load regulation of 0.25 percent, ripple and noise of 35 mV p-p, and efficiency of 85 to 90 perc
Gas Gauging: Art or Science? Design How-To 5/27/2005 Post a comment Battery ICs are very sophisticated and must keep up with the demand for accurately calculating battery performance for the wide variety of battery types. Each calculation method has differing elements and resolutions and introduces possible errors into the equation, which affects the battery's potential long-term maximum performance. Here's what you need to know to get the most out of your battery.
Configurable medical supplies are pre-approved Product News 5/27/2005 Post a comment The AC/DC power sources in the MM family from Powerstax plc (formerly Advanced Power Conversion) are pre-approved, configurable medical supplies designed to reduce costs associated with safety agency clearances and time-to-market design issues. Available in two industry standard sizes, the Powerstax MM series delivers 400, 600, and 1,000 watts from up to 12 isolated outputs (1.45 to 28 volts), which represents 46,656 possible output configurations.
Simulation software sets power designs in motion Product News 5/26/2005 Post a comment International Rectifier's new web-based simulation tool for three-phase, variable-speed, motor drive inverter circuits simplifies recursive calculations and expands the design support for the company's iMOTION integrated design platform.
How to drive switching devices without losing speed Design How-To 5/26/2005 Post a comment The monolithic high-side drive poses a fascinating challenge for system designers. Simply put, designers need to find a way to drive the switching devices as easily as possible - without suffering from lack of speed. Enter a high-voltage process for the high-side gate driver IC and the conventional high-side driver topology.
Quarter-brick fields semi-regulated bus, TCA apps Product News 5/25/2005 Post a comment Power-One's QKS48T21120 quarter-brick DC/DC converter, specifically suited to loosely-regulated intermediate-bus and advanced TCA (Telecom Computing Architecture) applications, delivers up to 21 amps at 12 volts from a 36-75 volt input.
Sealed inverter rebuffs the elements Product News 5/25/2005 Post a comment Absopulse Electronics' PSI 1000 series inverter, whose internal modules are fully encapsulated within a thermally conductive MIL-spec silicon rubber compound to ensure immunity to shock, vibration, moisture, humidity, salt, and fog, delivers 1000 VA at 50, 60, or 400 Hz for powering industrial, railway, marine, mining, utility, and aviation ground support equipment.
1-W DC/DCs are easy on the budget Product News 5/20/2005 Post a comment MicroPower Direct's D100E series of miniaturized DC/DC converters, part of the company's new Budget Saver product line, delivers 1 watt for space-critical board-level applications. The converters, in a 7-pin SIP measuring 0.77-by-0.24-by-0.4 inches, are available in 24 models, which provide single and dual outputs of 5, 9, 12, 15, ±5, ±9, ±12, and ±15 VDC from a 5-, 12-, or 24-volt input. They're priced at $2.45 each in 100s, the lowest cost units of their kind in the ind
DC-DC Conversion for Power over Ethernet Design How-To 5/19/2005 Post a comment In the next few years power-over-Ethernet is expected to become a standard feature on all high-end switches and routers for voice over Internet protocol (VoIP) and LAN wireless. Here's some in-depth help designing an isolated dc-dc converter that can be used in Powered Devices for Power over Ethernet applications.
AC/DCs stake claim as the first field-configurables Product News 5/19/2005 Post a comment Excelsys says its Xcite family of AC/DC "field-configurable" power supplies is a first in the power supply industry. The 400-1200 watt plug n' play family comprises four front-end chassis (powerPacs) and seven output modules (powerMods), with each modular solution providing a complement of DIP switches and a trim pot to allow users to quickly configure output requirements.
Programmable electronic loads heft nearly 2-kW Product News 5/18/2005 Post a comment If you're working with batteries or battery chargers, fuel cells, AC-to-DC and DC-to-DC converters, DC-to-AC inverters, or voltage regulator modules, Elgar Electronics has a new line of programmable electronic loads to ease the task of testing such sources. Offered in both modular and rack-mount configurations, these loads can heft either AC or DC, with versions capable of handling between 75-W to 1.8-kW.
Hold on to your power Power DesignLine Blog 5/16/2005 Post a comment NOAA Space Environment Center says there was an extreme geomagnetic storm that could affect all power systems causing widespread voltage control problems. Really? Did you notice anything?
Reversible Computing ABCs: No Longer Greek to the World? Power DesignLine Blog 5/16/2005 Post a comment Dr. Frank just returned from directing the First International Workshop on Reversible Computing on the beautiful island of Ischia, Italy. Don't know much about Ischia? Let him give you a short lesson. Don't know much about reverisible computing? Here's a few words about it and some links to more. Next week he describes some of the highlights of the conference.
Cherokee, rival power suppliers face weak quarter News & Analysis 5/12/2005 Post a comment Custom power supplier Cherokee International Corp. posted net earnings of $0.6 million, or 3 cents per share on sales of $32.0 million for the first quarter, down from $2.2 million, or 20 cents per share on sales of $36.8 million in year-ago quarter.
Bel Fuse hounds Artesyn again about merger News & Analysis 5/12/2005 Post a comment Like a suitor undeterred by rejection, components supplier Bel Fuse Inc. announced Thursday it has sent a letter to the board of directors of power supplier Artesyn Technologies Inc. expressing disappointment with Artesyn's current stock price and again urging the companies to consider merging their operations.
Compact supplies flex customizing muscle Product News 5/12/2005 Post a comment Touting a superior platform from which to bring customized designs to market, XP Power, with its fleXPower family of AC/DC supplies offers designers a broad array of power solutions from 400 watts to 2.2 kW, and can deliver samples within 24 hours.
UPS touts galvanically isolated input Product News 5/10/2005 Post a comment Falcon Electric's new single-phase SG Series Plus uninterruptible power systems (UPSes) for 5 and 6 kVA service feature a galvanically isolated input, which is unusual for this class of supplies, according to the company. These true on-line (double conversion) UPSes, working from the 120 or 230 VAC mains and with an output of 208/220/230/240 VAC, are suited to sensitive equipment, for which galvanic isolation is said to afford an extra level of protection.
Power-over-Ethernet midspan first for VoIP Product News 5/9/2005 Post a comment PowerDsine says its 24-port 6024G is the industry's first power-over-Ethernet (PoE)
midspan device for serving 10/100 Mbps and emerging gigabit (1000 Mbps) network devices such as VoIP phones, WLAN access points and IP network video cameras in enterprise installations.
Wither Current Mode? Power DesignLine Blog 5/9/2005 Post a comment Don Alfano of Silicon Labs says voltage mode will become more popular as digital power supply control becomes dominant. If you don't think so, or you're not sure, let Don enumerate the reasons why voltage mode has it all over current mode.
Just enough is enough, right? Power DesignLine Blog 5/7/2005 Post a comment Portable applications have become very popular in the last couple years and will continue to gain in popularity. That means portable designs must become more efficient and probably we consumers must get used to the idea that these mighty mites will only have just enough power to get the job done. Are you okay with that?
High-voltage supply serves distributed power Product News 5/5/2005 Post a comment Absopulse Electronics' HVI 5000 supply delivers 40 amps continuous at 125 VDC from a 277 VAC or 350 VDC (±10 percent) input for power generation and power distribution applications, as well as for industrial and other heavy-duty environments.
Reliability Issues for Hot Swappable Devices Design How-To 5/4/2005 Post a comment ON Semi tells you how to solve inherent failures mechanisms of hot swap systems, such as failure of gate drive level in the safe operating area of a power FET, without using transzorbs or overrating power devices.
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...