REVIEW: 300-mV input-voltage boost converter throttles micro-fuel cells Product News 3/29/2007 Post a comment Chip maker Texas Instruments is debuting an ultra-low-input DC-to-DC boost converter IC that promises to let portables operate from new energy sources such as micro-fuel cells. TI's power circuit can let you build converters that operate with input voltages lower than 300-mV. eeProductCenter Senior Technical Editor Alex Mendelsohn reports.
Solar Power Conference call for presenters News & Analysis 3/28/2007 Post a comment The Solar Power Conference and Expo is the big event for those interested in solar for domestic and worldwide markets. Find out what sessions are looking for presenters but hurry because the deadline for submissions is April 6.
Low power TI boost converter targets solar cells News & Analysis 3/28/2007 Post a comment Texas Instruments has started sampling a 0.3V input power management chip with a 0.5V start-up that will enable portable electronic end-equipment to draw power from new energy sources, such as solar and micro-fuel cells.
Designs that improve performance per watt Design How-To 3/26/2007 Post a comment We've come to expect faster, cheaper and more functionality from our computing devices but cost of computing has made both large and small users pay attention to what's inside. Here's how to design with a more holistic energy approach for processors, drives, power supplies, and displays.
QPL-certified Schottky rectifiers aid high-reliability power systems Product News 3/22/2007 Post a comment International Rectifier introduced a series of Schottky rectifiers in accordance to the Defense Supply Center Columbus (DSCC) Qualified Products List (QPL). These QPL devices target high-reliability applications in switching power supplies (SMPS), satellite power distribution systems, resonant power converters, and low-voltage motor control.
Fast-recovery diodes suit 500- and 600-V applications Product News 3/21/2007 Post a comment Microsemi Corp. launched a line of FREDFETs (H-FREDFETs) fast-recovery diodes to its latest-generation POWER MOS 8 product line. The MOS 8 H-FREDFET devices are designed for a range of 500 V and 600 V applications including AC-DC offline power supplies, motor drivers, server and telecom power systems, solar inverters, single- and three-phase arc welding and plasma cutting equipment, battery chargers, semiconductor capital equipment, and induction heating.
DC/DC converters delivers up to 5 W Product News 3/21/2007 Post a comment Power Sources Unlimited developed the TES-5 series of low-profile, surface mount dc/dc converters that deliver up to 5 W from a 1.31- x 0.81- x 0.4- in. encapsulated package. The series features a 2:1 input range of 9-18 Vdc, 18-36 Vdc, or 36-75 Vdc with single or dual outputs.
Fundamentals of power system ORing Design How-To 3/21/2007 Post a comment Many portable devices, blade servers and telecom switches require power architectures with redundancy, summation of power for capacity, or a capability to select multiple sources. Today ORing is often implemented with MOSFETs and IC-based control. Find out what ORing functions are required and what prevalent techniques are used.
390-volt ultracap module suits heavy-duty apps Product News 3/20/2007 Post a comment Maxwell Technologies has expanded its BOOSTCAP ultracapacitor line with a 390-volt module that offers up to 2.8 times greater energy storage and higher integration than earlier products for hybrid and electric vehicles and heavy-duty industrial applications.
Power supply provides 400 W with status, control Product News 3/16/2007 Post a comment APS released a 400 W switching power supply that measures 8.00 x 5.00 x 1.60 in. with featured status and control signals for edge systems. These supplies feature universal AC input with active power factor correction and single outputs ranging from 2.5 to 58 Vdc and up to 400 W of output power.
REVIEW: Power management chip smoothly throttles USB, battery subsystems Product News 3/15/2007 Post a comment IC maker Maxim Integrated Products rolls out a smart dual-input USB/AC-adapter charger chip for use in circuits powered by single-cell Li+ batteries. The IC's charger integrates all power switches required for charging and switching a load between a battery and external power, eliminating the need for external pass devices. Click to read eeProductCenter Senior Tech Editor Alex Mendelsohn's review of this less-than-$2 device.
Accurate Thermal Analysis of Chip/Package Systems Design How-To 3/15/2007 Post a comment With the increasing complexity and power dissipation of modern electronic designs, controlling peak temperature and predicting the temperature profile on the chip early in the process is becoming critical for insuring system reliability. Low power design methodologies create their own thermal challenges, as they may generate "hot" and "cool" regions on the chip. Causes and soutions are explored.
Power manager IC enables battery charging during system operation Product News 3/14/2007 Post a comment The AAT3670 power manager IC from AnalogicTech integrates a battery charger, current-limited load switches and control circuitry, which allows users to simultaneously charge their battery and run their system from an AC adapter or USB port without compromising the battery's charge cycle life and without adding external load switches.
Intermediate bus converters provide 97% conversion efficiency Product News 3/13/2007 Post a comment Emerson Network Power launched two intermediate bus converters (IBCs) that are capable of delivering output power with a conversion efficiency of 97%. Forming the latest additions to the Artesyn family of high-power-density IBCs, the products comprise a 300 watt eighth-brick and a 642 watt quarter-brick.
DC/DC converter is housed in small package Product News 3/13/2007 Post a comment PowerGate has launched the TES-5 series of surface-mount DC/DC converters in a small 1.31 x 0.81 x 0.40-inch encapsulated package aimed at battery-powered equipment, instrumentation, communication systems and industrial controls.
3M sues over battery patents News & Analysis 3/9/2007 Post a comment 3M has filed a federal lawsuit accusing several major consumer electronics companies of infringing on its patents for technology found in lithium-ion batteries, a rechargeable power supply used in electronic devices ranging from mobile phones to notebook computers.
IGBT tutorial: Part 1 - Selection Design How-To 3/8/2007 6 comments IGBTs are encroaching upon the high frequency, high efficiency domain of power MOSFETs. The industry trend is for IGBTs to replace power MOSFETs except in very low current applications. In part 1 of this two-part article you will understand what IGBTs are, the tradeoffs and how to select one. Part 2 takes a look at an IGBT datasheet.
Power management IC targets 3G mobiles Product News 3/6/2007 Post a comment Micrel developed a power management IC targeted at UMTS, EDGE, CDMA2000 and WCDMA mobile handsets. Housed in a 2.5 x 2.8-mm MLF package, the MIC2807 provides three outputs including a 2 MHz buck regulator and two linear regulators.