Category | October

Architecting Digital Power ICs to Speed the Adoption of Digital Power

Posted on 01 October 2007

       Analog Power with Digital Communication and Control The adoption of digital power solutions has been slower than expected in spite of the now large number of digital power ICs on the market. The adoption of digital power solutions can be accelerated by architecting digital power conversion chips which can be readily integrated [...]

High Voltage SPT+ Diodes

Posted on 01 October 2007

      The Perfect Match The newly developed SPT+ diode technology platform for 3.3kV, 4.5kV and 6.5kV diodes for next generation high power IGBT modules is described in this article. The new diode range offers low losses and soft recovery characteristics combined with a high reverse recovery safe operating area and superior surge current [...]

The 4th Generation of the 1200V Emitter-Controlled Freewheeling Diode

Posted on 01 October 2007

       A Soft Alternative Freewheeling diodes are one of the important components for IGBT modules and have to satisfy a number of demands. Especially in hard switching applications, such as inverters for industrial drives or UPS, a soft switching behaviour of the diode as well as low losses and high ruggedness – is [...]

A New VRM Architecture for N+1 Redundancy at the Point of Load

Posted on 01 October 2007

      Support output currents above 300A by adding the required number of phases The preferred power distribution topology for servers and switches confines redundancy provision to card or rack-level. A new POL topology supporting hot-swapping moves N+1 redundant design closer to individual ICs. By George Schuellein, Director, DC/DC Applications Engineering, International Rectifier   [...]

Potential of SiC in Power Electronic Applications

Posted on 01 October 2007

      2nd SiC User Forum — Report of Conclusions After the first Silicon Carbide (SiC) User Forum organised by ECPE in 2006, technology has developed further — in particular new power electronic systems with SiC components and new SiC devices have been reported. Time had thus come to continue the exchange between experts [...]

EMC Filters Cut Costs and Protect Motors

Posted on 01 October 2007

       Never again shielded cables The SineFormer™ from EPCOS is an output filter that is easy on the motor and makes shielded motor cables superfluous. It allows costs to be reduced while improving performance. By Carsten Juergens, Product Marketing Manager, EMC Filters and Christian Paulwitz, Manager EMC Laboratory   Asynchronous motors must often [...]

Changing the Paradigm for Power Systems

Posted on 01 October 2007

       Higher Accuracy, Lowest Loss AC Current Sensor Historically, traditional magnetics in the form of a current transformer and its associated bill of materials or possibly a series resistor, hall-effect and magneto-resistive device play the role of generating an output signal proportionally to measured current in a power system. By Brett Etter, Silicon [...]

fastPACK 0 H 2nd gen & fastPHASE 0

Posted on 01 October 2007

      Fast switching for welders of ever decreasing size and price In recent years, size and weight have been playing an increasing role in the design of welding equipment. This is particularly true in the case of handheld equipment, which needs to be light and small enough for the operator to carry. For [...]

Advances in SiC Rectifiers

Posted on 01 October 2007

       SiC can eliminate the need for many other components One of the biggest advances in silicon carbide rectifier technology is the creation of better material in larger sizes. By moving from 3-inch wafers to 4-inch, suppliers have achieved greater manufacturing efficiency and are driving down the costs of SiC devices. By John [...]

The Power of Symmetry in Power Design

Posted on 01 October 2007

      All MOSFETs must share the load equally Late last year, I began the conversion of my 1998 Chevy S10 pickup truck from gas to all electric. As an electronics engineer, the challenge of designing my own electronic systems was more than interesting to me. A low-voltage charger was needed for the 12-V [...]