Category | September

Low Inductive Inverter Design

Posted on 30 August 2012

       Using a new power module concept Increasing efficiency and lowering EMI are important goals for designing power electronic systems. To obtain this, the parasitic inductance of the current commutation loops is under focus. In this paper an overall low inductance module is shown which provides not only low inductance within the half [...]

Energy Efficiency and Design Freedom of Busbars

Posted on 30 August 2012

       Improvement of thermal optimization and increase reliability Busbars are energy highways that can be customized to ensure the current energy flow between the power source and the capacitors, resistors, integrated circuits, IGBT’s or complete modules. Recently, however, busbars have been faced with increasing performance requirements, such as constant demand for higher ampacity [...]

SKiN Technology for Ultra Compact Power Modules

Posted on 30 August 2012

      Driven by the need for high power densities, reliability and system cost reductions power module technologies have to find new ways to address market needs. The existing design approaches have to be questioned in order to achieve significant performance improvements. In the markets for e-mobility and renewable energy the connection and assembly [...]

Solutions for On-Board Chargers

Posted on 30 August 2012

       All charged up EPCOS and TDK components perform key functions in the Finepower’s on-board chargers for electric and hybrid vehicles. They include inductors, transformers, capacitors and protective components. By Cem Som, Development Transformers, EPCOS   Finepower - an engineering specialist for power electronics - has developed a highly compact prototype of an [...]

High Speed, Two Quadrant DC/DC Power Supply

Posted on 30 August 2012

       The main function and benefit of synchronous rectification To enable a converter that modulates output voltage and that generates voltage according to some predefined wave form, whilst keeping the efficiency high, is only possible using a high speed two quadrant DC/DC power supply. By Milan Marjanovic, Texas Instruments   A two quadrant [...]

Total Solution for Energy Efficient Home Appliance Power Supply

Posted on 30 August 2012

       Energy efficiency is crucial to both consumers and the environment. As much as half of the energy used in homes goes to heating and cooling. So making smart decisions about heating, ventilating, and air conditioning systems can have a big effect on utility bills. Saving energy at home also can help to [...]

eGaN® FET Safe Operating Area

Posted on 30 August 2012

      Rugged eGan FETs demonstrate superior safe operating area A basic limitation of a power transistor is temperature. Calculations of device temperature during operation assume that power dissipation is spread evenly over the entire active area of the device, which is not always true. Because of negative temperature coefficients in certain parameters of [...]

Optimizing Three-Phase Planar Transformer Construction

Posted on 30 August 2012

       Production costs are reduced as well as transformer efficiency is increased A three-phase transformer with flat conductor layers is proposed in this article. This arrangement is used for high current density transformers. Cost effectiveness in planar magnetic are related with the optimization in the number of layers in each winding. This fact [...]

High Current Rectifier Diodes for Welding Applications

Posted on 30 August 2012

       The trend is to increase frequency from 1 kHz today to 10 kHz or even 20 kHz Resistance welding, although not a high profile power electronics application, has specific requirements which have led to the development of a family of application specific devices. The ever increasing demands are pushing the limits for [...]

The Half-Bridge Circuit Revealed

Posted on 30 August 2012

       Confirm zero-voltage switching during all operating conditions The half-bridge or ‘totem-pole’ configuration is one of the most common switch circuit topologies used in power electronics today. It is used in various applications such as synchronous buck converters, resonant converters, electronic ballasts, induction heating and motion control, and offers such benefits as four-quadrant [...]