Buck Topology Provides Boost with Low Ripple and Noise Design How-To 7/29/2005 Post a comment Battery operated circuits often require a regulated voltage that is higher than a low battery can supply and lower than a fully charged or charging battery. Here's an article that tells you what you can do to provide a regulated output voltage while the input voltage varies for these battery operated devices.
AC/DC supplies front industrial, medical applications Product News 7/29/2005 Post a comment Artesyn Technologies' NLP250 AC/DC power supplies, which deliver up to 250 watts, are suited to front-end conversion solutions and distributed power architectures, including medical applications. The supplies provide a choice of 12-, 24- or 48-volt outputs to simplify system integration (main channel output current is 21, 10.5, and 5.25 amps, respectively), and are supported by control and monitoring features to satisfy a wide variety of DC supply requirements.
14-slot AdvancedTCA shelf adds performance Product News 7/29/2005 Post a comment Tracewell Systems' second generation CO-Star 14-slot AdvancedTCA (ATCA) Central Office Shelf touts numerous design enhancements including an advanced split backplane design for easy customization, highly robust construction, board-to-board assembly to eliminate internal wire harnesses, and additional airflow capacity for cooling beyond 200 watts per slot.
Power-One loss misses guidance News & Analysis 7/28/2005 Post a comment Power supplier Power-One Inc. reported a net loss of $14.8 million, or 17 cents per share on sales of $63.4 million in the second quarter ended June, compared with a net loss of $3.9 million, or 5 cents per share, on sales of $72.5 million in the year-ago quarter.
AC/DC supply meets VME/VXI requirements Product News 7/28/2005 Post a comment The 57S81 from North Atlantic Industries, working from a 115/230 VAC or 270 VDC input, delivers up to 500 watts for Versa Module and extended instrumentation (VME and VXI) applications associated with industrial and military (NAVMAT compliance) requirements.
12-port midspan touts compact, low-cost design Product News 7/25/2005 Post a comment PowerDsine differentiates its 3012 power-over-Ethernet (PoE) midspan, a 12-port device that's the latest in the company's 3000 Midspan family, from competing products by its compact design and low price-per-port. "PowerDsine's 3012 Midspan is tailored to address the budgetary constraints of small- to medium-sized businesses that desire the flexibility to expand their enterprise networks," said Igal Rotem, CEO.
Dual-output miniDIPs simplify DC/DC portable power Product News 7/22/2005 Post a comment The dual-output G100E family of miniaturized DC/DC converters from MicroPower Direct delivers 1 watt for a wide variety of board level applications in which space is limited. As part of the company's "Budget Saver" series of products, the converters are designed to be cost-effective for process/machine control systems, board level data-acquisition systems, portable/battery-backed equipment, robotic systems, and board level power distribution subsystems.
Quarter-brick delivers 420 watts at 70°C Product News 7/22/2005 Post a comment Focusing on an ever popular theme, highest useable power, Power-One says its QTS48T46096 quarter-brick bus converter delivers in excess of 400 watts at +70°C. Over its operating range, the converter delivers up to 46 amps at up to 97 percent efficiency.
Vertical-mount POLs rise with sequencing Product News 7/22/2005 Post a comment Designed particularly for space-constrained installations and compact control of the power distribution network, Artesyn's new vertical-mount PTV series of point-of-load (POL) DC/DC converters are offered in eight versions to simplify a broad range of board designs. As with the company's PTH series, the PTVs include Auto-Track sequencing to allow multiple converters to track each other, or an external voltage, for powering-up/down DSPs, FPGAs and ASICs.
Smaller power ICs facilitate extended PoE Product News 7/20/2005 Post a comment Focusing on higher density for extended portable applications, Power Integrations has further expanded its DPA-Switch family for power-over-Ethernet (PoE). The company's four new DPA-Switch devices come in S-PAKs, which provide a footprint savings of 40 percent and reduce package height by 55 percent as compared to the existing TO-263. There's no tradeoff in equivalent thermal impedance.
AC/DC complies with power-over-Ethernet Product News 7/20/2005 Post a comment Astec Power’s first power-over-Ethernet (PoE) supply, its DS657, delivers 657 watts at a nominal 48 volts in a 1U package for midspan and endspan implementations. The fan-cooled supply, working from a universal AC input, also includes an isolated 12-volt source for distributed power applications.
Board-mounted supply resists the elements Product News 7/19/2005 Post a comment Wall Industries' new board-mounted dual front-end power supplies in the company's PSAQC60 series are dirt-, dust-, and moisture-resistant. The supplies deliver 60 watts from a 90-264 VAC or 120-370 VDC input.
POLs ride mobile communications Product News 7/19/2005 Post a comment V-Infinity's VPOLXXX-12W series of point-of-load converters, touting a wide input-voltage range (6-14 VDC) that suits them to boards powered by a loosely-regulated intermediate bus, provides 10, 16 and 20 amps at 0.75 to 5 volts (trimmable) for such applications as mobile communications and computing.
Shift Happens -- Part 2 Power DesignLine Blog 7/15/2005 Post a comment Don responds to the queries he received from his previous Shift Happens blog where he suggested that the availability of digital control would catalyze innovation in base switch mode topologies. Is digital sounding the death knell for analog control? Probably not but it is a significant change.
Single-, three-phase DIN supplies deliver 480 watts Product News 7/14/2005 Post a comment Lambda's two new DIN-rail power supplies in the company's DHP series, the DHP480-24-1 and DHP480-24-3, deliver up to 480 watts from a universal single- (85-264 VAC) and three-phase (340-575 VAC) input, respectively, for such applications as process control, factory automation, and automotive manufacturing.
Wide-input quarter-brick drives the 9-volt bus Product News 7/13/2005 Post a comment Cherokee International's 5:1 fixed-ratio quarter-brick, the CBQ5, is suited for use as an isolated intermediate bus converter, and the wider-range, input-voltage requirements for North American central office and telecom applications including optical networks, routers, enterprise servers, and storage area networks.
TI adds Auto-Track to 3-amp POLA modules Product News 7/8/2005 Post a comment Texas Instruments' PTH08000W and PTH04000W plug-in power modules, its first 2.25- and 3-amp (nonisolated) regulator boards with the company's Auto-Track sequencing technology for simplifying power-up and power-down scenarios, ease power design in industrial and data communications systems that employ high-speed microprocessors, FPGAs, ASICs and TI's TMS320 digital signal processors (DSPs). The (nonisolated) DC/DC converters, compatible with Point-of-Load Alliance (POLA) specifications, feature
La pile à méthanol dégage une puissance électrique record News & Analysis 7/8/2005 Post a comment NTT Docomo Inc. et les laboratoires Fujitsu Ltd. ont développé ensemble un prototype de pile à méthanol direct qui peut fonctionner avec une solution de méthanol pratiquement non dilué. Les chercheurs affirment que cette pile donne une puissance moyenne record d’environ un watt.
1U rack provides PoE and network RPS compatibility Product News 7/7/2005 Post a comment Phihong USA has introduced a 1500-watt 1U rack for RPS and bulk power sources. With quick-disconnect connectors for three individual loads, the new PSM1554 accepts three PSM500 500-watt power supplies. Applications include Power-over-Ethernet (PoE), VoIP phones, DC UPS, lighting systems with a single UPS, and network redundant power sources (RPS).
Brick delivers 600 watts with full military regalia Product News 7/7/2005 Post a comment Emerson Network Power's Astec AIF-300Vin full-brick DC/DC converters, which include a microprocessor with I2C interface and memory for advanced control and monitoring functionality, deliver up to 600 watts for demanding military, industrial, and test-and-measurement applications. The single-output converters, six versions in all, provide 1.8, 3.3, 5, 12, 15, or 24 volts at rated power from a 250-400 volt input.
Neue Brennstoffzelle bringt Rekordleistung News & Analysis 7/7/2005 Post a comment Der japanische Telekommunikationasnbieter NTT Docomo und Fujitsu Laboratories Ltd haben eine Brennstoffzelle entwickelt, die mit fast reinem Methanol arbeitet. Die Zelle liefert eine rekordverdächtige Ausgangsleistung von rund einem Watt.
Switcher delivers dependable roadside service Product News 7/6/2005 Post a comment Pleasanton, Calif.—The APS150RS-IND series of AC/DC switching supplies from Advanced Power Solutions is designed for environmentally demanding applications such as mobile radio base stations, roadside electronic cabinets, and other harsh environments. It's rated for operation over -40 to +85°C (full-load operation up to +70°C).
Mil supplies get to market on the double Product News 7/6/2005 Post a comment XP Power's off-the-shelf MCC, a 400-watt DC/DC converter suited to quick customizing, meets MIL-STD-1275A/B input requirements, MIL-STD-461E EMI specifications and has MIL-STD-810F shock and vibration integrity. With up to four outputs, and an optional 200-watt conditioned 24-volt rail, the low-profile power supply meets the needs of military applications, avoiding the costs and delays associated with custom alternatives.
APC's thermal units pack a whirlwind Product News 7/6/2005 Post a comment American Power Conversion's new array of rack-based upgrades for the power distribution network is designed to cost-effectively handle the challenges of high power densities and cooling in IT environments. Part of the company's InfraStruXure architecture, which integrates power, cooling, management, racks, and services for on-demand network-critical physical infrastructure (NCPI), the new arrivals include a Rack Side Air Distribution Unit, Rack Air Removal Unit, and customized Rack-mount Power D
2-watt DC/DCs comply with RoHS specs Product News 7/6/2005 Post a comment Traco Electronic AG's newest generation of 2-watt DC/DC converters, their TEL2 and TES2N series, feature a lead (Pb)-free design to comply with the European RoHS directive. These modules are fully encapsulated and measure only 0.94-by-0.54-by-0.30 inch for both the thru-hole (TEL2) and surface-mount (TES2N) packages, and thus they are suited to space critical applications in the industrial and consumer electronics areas.
Kit configures custom supplies in a jiffy Product News 7/6/2005 Post a comment Excelsys' new Xgen Series "powerKit" facilitates the development of custom AC/DC power supply solutions in minutes. Each development system contains everything the designer needs for custom configuration, including the company's powerPac front-end chassis and a selection of plug-in "powerMod" DC output modules. Output modules can be quickly installed or removed/exchanged. The configured supplies will meet all worldwide safety agency approvals.
How to keep your VoIP up and running Design How-To 7/5/2005 Post a comment Voice over IP is making inroads in many companiies needs for telephony. However, you need to prepare the groundwork to ensure VoIP applications are always on. Here's what you should know to get ready.
Utility supply stands in for field apps Product News 7/5/2005 Post a comment Accordance Systems says its new POW WOW! portable power supply is the first 4-pin utility power supply for computer motherboards and peripherals and
bench testing computer applications. Its compact
dimensions (5.75-by-1.5-by-3 inches, LWH) and the low cost of this desktop-style supply makes it suited for low-power applications in the lab or at sites for devices using a Molex-type 4-pin power connector. POW WOW! delivers 42 watts at 5 and 12 volts from a 100-240 VAC input.
400-watt AC/DC is encapsulated for rough environments Product News 7/1/2005 Post a comment Fully protected against the elements, the POL 400, a recent addition to Absopulse Electronics' POL series of conduction cooled AC/DC power supplies, delivers 400 watts at 12, 24, 36, or 48 volts from a 115/230 VAC or 250-370 VDC input. The weather-hardened unit measures 1.9-by-4.5-by-9.13 inches and weighs just 4.85 pounds.
Blog Doing Math in FPGAs Tom Burke 24 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...