Eighth-bricks tout high thermal performance Product News 12/29/2003 Post a comment Ault's HDE1-75 single-output eighth-bricks, suited to high-temperature ambient environments, deliver up to 25 amps at 1.8, 2.5, or 3.3 volts from a 36-75 VDC input. Using the company's Tronix-Flex technology, these 75-watt, 350-kHz DC/DC converters feature an FET array design that stacks MOSFETs in parallel on multi-level printed circuit boards and an integrated heat sink to achieve high power density at elevated temperatures (100 watts/in3 at 85°C) despite minimal air flow.
Phihong launches industrial quad-output supply Product News 12/19/2003 Post a comment Phihong's PSF-149 is a departure from the company's broad portfolio of open-frame AC/DC supplies, an enclosed 150-watt quad-output unit suited to industrial OEM applications. Working from a 100-240 VAC input, it delivers +5 volts at up to 15 amps (30 cfm), +12 volts at up to 5 amps, -5 volts at 1 amp and -12 volts at 1 amp for test equipment, networking systems, business machines and process control hardware.
DC/DC front-end brick integrates sequencing Product News 12/18/2003 Post a comment Power-One's HBCS25ZH DC/DC front-end, an addition to the company's maXyz family, is a 36- to 75-volt in, 12-volt out 300-watt half-brick that provides sequencing of up to four point-of-load converters, thus eliminating the need for an external controller and simplifying the design of board-level intermediate-bus architecture (IBA) power systems.
Power vendors roll with new buses Product News 12/17/2003 Post a comment Looking ahead: FOCUS ON INTERMEDIATE-BUS PRODUCTS - Embracing a flexible approach to efficient power delivery in multiple-voltage systems serving PC based, and datacom and telecom systems, vendors this year scored with several significant chip-set and module products optimized for distributed power architectures that get away from traditional 12- and 5-volt intermediate buses. Indeed, with the 7-9 volt region cited as the "sweet spot" for power component and system efficiency, two new topologie
3-in-1 regulator shrinks DDR power solutions Product News 12/12/2003 Post a comment California Micro Devices bills its CM3131 family as the industry's first fully integrated, all-linear DDR voltage regulator solution for cost-sensitive PC and consumer set-top applications. These regulators provide VDDQ, VTT and VSTBY power for DDR and DDR II SDRAM memories. The CM3131, according to the company, differs from existing switching regulator based solutions by doing away with the need for multiple external FETs and inductors, thus cutting solution costs by up to 70 percent and board
Slim UPSes fit the network space Product News 12/11/2003 Post a comment Sola/Hevi-Duty says its new S3K2U, in the company's rack-mountable UPS line, sports an improved size-to-performance ratio to suit the compact space requirements of networking and process-control racks. The 1000, 1440, and 2200 VA models fit into a standard 19-inch rack or in a tower configuration and don't require extra mounting hardware.
POLs tout full output at +85°C Product News 12/11/2003 Post a comment Power-One says its 5-amp YNM, 10-amp YNL and 16-amp YNS series of point-of-load (POL) converters, the first products in the Nex family, will deliver full rated output current at up to +85°C (+70°C at 5 volts). The YNL is a fixed output device that comes in 1 to 5 VDC versions and delivers up to 50 watts from a 10-14 V intermediate-voltage bus. The YNM and YNS provide a programmable output from 0.75 to 5.5 VDC, and up to 28-, and 88 watts, respectively.
DC/DC system works for the railroad Product News 12/11/2003 Post a comment Absopulse Electronics' DRC150 is a dual-input, redundant-output DC/DC system suited to mission-critical railway, marine, public utility, telecom and industrial applications. It delivers 24 VDC at 5 amps and 5 volts at 5 amps from a 125 VDC input. The modular system comprises two N + 1 redundant plug-ins in a 3U by 19-inch wall-mount chassis. The inputs are switch-selectable to allow for seamless system maintenance.
Cap-free, reverse-current-protected LDOs simplify portable design News & Analysis 12/9/2003 Post a comment Texas Instruments' three new families of low drop-out linear regulators (LDOs) feature reverse leakage current protection and extremely low noise, and don't require an output capacitor. The new LDOs, which deliver standard outputs at 5, 3.3, 3, 2.5, 1.8, 1.5 and an adjustable 1.2 to 5.5 V, are designed for 150-, 250- and 400-mA applications.
Cell balancing maximizes the capacity of multi-cell batteries News & Analysis 12/8/2003 Post a comment Common multiple cell configurations for Li-Ion cells in battery packs consist of three or four cells in series, with one or more cells in parallel. This combination gives both the voltage and power necessary for Portable Computer, medical, test and industrial applications. While these configurations are common in many battery powered applications, they may not be as efficient as they could be, write Xicor engineers. The reason for this is that any capacity mismatch between cells in a series conn
PFC controller IC saves a stage Product News 12/5/2003 Post a comment ON Semiconductor bills its NCP1651 as the first integrated single-stage, active power-factor-correction and step-down controller. The controller eases the task of meeting the IEC1000-3-2 harmonic requirements for isolated AC/DC converters with mid to high output voltage requirements at powers up to 200 watts. It drives a flyback converter topology and programs the average input current to follow the line voltage in order to provide unity power factor.
1.5 kW power plants answer for telecom Product News 12/3/2003 Post a comment XPiQ Inc.'s CFP1K5 Series of front-end systems and the company's CDP1K5 Series of rectifier systems each deliver up to 1500 watts (for mains input >180 VAC). The CFP1K5 is suited to distributed power applications requiring a +48 VDC front end; the CDP1K5 generates -54 VDC for battery-charging applications. Both series work from a 90 to 264 VAC input and are equipped with active power factor correction.
5-amp POLs tout high accuracy Product News 12/3/2003 Post a comment C&D Technologies' NNL05S04 and NNL05S12 are high-efficiency, (non-isolated) DC/DC converters targeted at the 3 to 5.5., and 10.8 to 13.2 volt intermediate bus distributed power architectures (DPAs), respectively, and high-accuracy applications to meet the demands of FPGAs, ASICs, and DSPs. Delivering a user selectable 0.75 to 3.3 volts at up to 5 amps, they feature a line regulation of 0.76 percent (typical), load regulation of 0.52 percent, voltage accuracy of 0.3 percent, and output ripple and
200-W triple-output brick serves in tight spots Product News 12/3/2003 Post a comment Advanced Power Conversion's APC-F203 series is a 200-watt, triple-output full-brick (4.6 by 2.4 by 0.5 inches)for space-limited applications. The converters deliver +5V and ±12, or +5 and ±15V from a 24- or 48-volt input (total of 4 models). The main +5V output is regulated to ±2 percent and the other outputs are regulated to ±5 percent with a balanced load.