Category | January

Powering FPGAs Using the LM20k Family

Posted on 01 January 2008

      These are the PowerWise Synchronous Buck Regulators The LM20k PowerWise® synchronous buck regulators are National Semiconductor’s newest family of full-featured point-of-load integrated regulators. The LM20242 operates from input voltages of 4.5V up to 36V and is capable of delivering up to 2A to outputs as low as 0.8V. By P. Ranucci, Design [...]

Ground-breaking Software for Power Electronics Design

Posted on 01 January 2008

      InCa3D enables parasitic extraction thanks to PEEC method It is no news that virtual prototyping helps reducing both development costs and time-to-market and as a matter of fact the demands on simulation software are getting higher and higher. Among the numerous tools that are proposed to power electronics designers, Inca3D stands out [...]

PTCs as Charging Resistors

Posted on 01 January 2008

      Fail-safe charging Self-protecting charging resistors based on PTC ceramic are suitable for smoothing capacitors in power supplies. In the event of a short circuit, they limit the currents to safe levels. By Dr. Stefan Benkhof, Product Marketing Manager PTC Thermistors, Epcos   Ohmic resistors are generally employed to limit the current when [...]

Passive Components for Class D Amplifiers

Posted on 01 January 2008

       Efficient Amplification Class D amplifiers have only made headway in audio technology over the last few years, even though this technology has existed since the middle of the last century. This development has been driven by the steady trend towards increasingly miniaturized and high performance devices. By Dr. Ing. Ralf Stiehler, Product [...]

“Flying Carpet” with Permanent Magnet Systems

Posted on 01 January 2008

      Researchers at the Eindhoven University of Technology (the Netherlands) have succeeded in making an aluminium platform with permanent magnets float with no detectable exertion of force – by using magnetic components of Vacuumschmelze in Hanau. Appropriately, the working title of the project was “Flying Carpet”. By Dr. Matthias Herget, Vacuumschmelze   Ever [...]

A Different Method to Measure Output Current

Posted on 01 January 2008

      Through the use of digital control, the light load behaviour of a converter can be significantly improved, and once the target has been achieved, additional functionality can be implemented. By Roberto Cappelloni, EU Field Application Engineer, Roal   Let’s consider for a moment the output current measurement, a very important and crucial [...]