Category | March

Interview on Power Electronics for Windmill Applications

Posted on 01 March 2008

       with Dejan Schreiber, Senior Application Manager, Semikron By Bodo Arlt, Editor BP    Bodo Arlt: What influence does the growing wind energy market have on the development of power semiconductors at Semikron? Dejan Schreiber: We achieve our biggest growth rate in the renewable energy market. 31GW of the 72.6 GW of total [...]

Interleaving Brings PFC to New Heights

Posted on 01 March 2008

      Single-chip controllers enable a growing trend The art of power supply design, like most worthy endeavors, is a never-ending challenge of balancing several objectives to reach the most desirable outcome. For switched mode power supply (SMPS) designs, competing objectives typically include total system cost, form-factor limitations, overall efficiency specifications, thermal concerns and [...]

IGBTs Operating at Higher Temperatures

Posted on 01 March 2008

      The potentials and the design constraints The targeted 175°C junction temperature limit for the next generation of 1200V IGBT requires safe and reliable operation of the devices at a temperature of 200°C. In this article, we carry out an investigation into the operation of 1200V SPT-IGBTs at temperatures up to 200°C, in [...]

High Performance Controller with Comprehensive Fault Protection

Posted on 01 March 2008

      Features Designed for High Reliability Systems Data center facilities and telecom base station subsystems must manage the balance of two essential commodities - power and cooling capacity. For example, processors in rack mounted servers demand large amounts of power and are one of the greatest sources of heat during normal operation. By [...]

Something New Has Been Added

Posted on 01 March 2008

      Attention all Space, Military, Aerospace, Hi-Rel Power semiconductor users. A new Power Semiconductor Package, The Ecconowatt, has been designed and the concept patented. It is ceramic, hermetic, surface mountable, lightweight, assembly friendly, with a short cycle time and most importantly, low cost. By Robert Satriano, CNS Power Ceramix   A New Power Semiconductor [...]

Circuit Protection Designs for a Connected World

Posted on 01 March 2008

      Integrating overcurrent and overvoltage protection The demand for more and more features and functions in consumer electronics presents new challenges to design engineers. Circuit protection device manufacturers must also continue to deliver new solutions to support emerging technologies and meet new system level protection requirements. By Adrian Mikolajczak, Tyco Raychem Circuitprotection   [...]

Magnetic Systems in Electric Motor Scooters

Posted on 01 March 2008

      Electrically powered two-wheelers have long left the prototype phase behind and are now seeking a wider public - a trend borne out by the first electric "Maxi Scooter" from US manufacturer Vectrix. By Wolfgang Unterstein, Product Marketing for Permanent Magnets, VACUUMSCHMELZE   The scooter's powertrain incorporates a magnet system containing VACODYM® 655 [...]

Voltage Drops on Battery Lines, of 3ms – 6 sec, Can Cause Interrupts

Posted on 01 March 2008

      Converters 10W - 500W DC/DC avoid system interruptions Supply line interruptions and voltage drops on battery wiring may lead to unexpected system behaviour in electronic systems. By Willi Spiesz, Grau Elektronik, Karlsbad, Germany   In safety related electronic systems, like brake and door control systems used in trains or busses, system interruptions [...]