Category | August

High-Rated X2 Capacitors

Posted on 01 August 2008

      EMI problems under control A new series of high-rated X2 capacitors with up to 45 μF allows the construction of space-saving and low-inductance EMI filters. By David Olalla, EPCOS Malaga   The number of nonlinear loads in industrial and consumer electronics is increasing continuously. Whether it’s a frequency converter, PC or energy-saving [...]

VLD Technology for 6.5kV

Posted on 01 August 2008

      A new edge termination structure helps to reduce losses and improves device ruggedness By applying the trench concept, which is nowadays state-of-the-art for all Infineon 600V to 3300V IGBT chips, well known advantages for on-state and switching losses can be achieved for the next 6.5kV chip generation. This is strongly supplemented by [...]

Ultracapacitor Efficiency

Posted on 01 August 2008

      Device in Constant Current and Constant Power Applications Ultracapacitors are power dense components suited to energy shuttling applications. These capacitors have reciprocal charge and discharge characteristics and high round trip efficiency well into their safe operating area. Rapid discharge and abuse tolerance are highlighted. By John M. Miller PE, PhD, Vice President [...]

Achieving Optimum Battery Charging by Power Management

Posted on 01 August 2008

      We see the results in user-friendly form consumer electronics The increasing number and level of sophistication of consumer devices over the last decade has had a great impact on system operation. Many new designs require the system to be fully operational during the charging process and also when the battery is deeply [...]

Interview on High Voltage Power Supply Technology

Posted on 01 August 2008

      with James Morrison, CEO UltraVolt By Bodo Arlt, Editor BP   Bodo Arlt: How did UltraVolt start and what was the founder’s vision? James Morrison: Filippo Galluppi and I cofounded UltraVolt in 1990 after he sold his custom, military hvps company to a defence contractor. Our vision was to be the world’s [...]

Water Coolers for New Converter Systems

Posted on 01 August 2008

      These converter systems require new customized cooling solutions Increasing power density is one of the main tasks developers of new power converter systems face. When modern more powerful IGBT modules are used in wind, large industrial drive, hybrid vehicle and other applications, engineers also need to adjust the water cooling system. Type [...]

Low Profile Low ESL Tantalum

Posted on 01 August 2008

      Multi-anode Capacitor Structure Improves Cost/Performance Ratio Traditional tantalum capacitors are known for their excellent reliability, robustness and stable parameters. This is why conventional tantalum capacitors with counter MnO2 electrode are still a popular choice for long life and high reliability applications. However, one of the downsides of the MnO2 electrode system is [...]

High Efficient Topologies for Next Generation Solar Inverter

Posted on 01 August 2008

      Efficiency leads to new selection criteria for the components Efficiency is becoming increasingly important in power electronics. In many applications, developments are driven by the initiatives for reduced energy consumption. The technology leaders are inverter applications in the solar market, since in this sector higher efficiency leads to a direct payback. By [...]

Built-in Reliability into Power Electronic Systems

Posted on 01 August 2008

      Review ECPE Workshop 25 – 26 June 2008 Toulouse, France End of June 65 engineers and scientists came together to discuss progress made in power electronics reliability engineering. The applications focused on automotive, aerospace and railway power electronics. The new “Robustness Validation” process, which has been worked out by members of the [...]