Category | December

Deadly Sins in Power Electronics

Posted on 03 July 2012

      Different life expectancies can be assumed for different design technologies Power semiconductors can be found in many applications providing high performances in a targeted, managed and reliable manner. Great effort is made in development departments to ensure that the power electronics devices developed there meet the requirements of practical applications. In many [...]

Making Wind

Posted on 03 July 2012

      Wind turbines are being designed to cover an increasingly larger power range Wind turbines featuring power electronics are becoming increasingly popular all over the world. Semikron provides application-specific solutions combining power electronics with customer support. By Rainer Weiß, Application Manager and Ralf Herrmann, Product Manager at Semikron   Wind power generation is [...]

UniFET™ II Optimized Power MOSFETs for Resonant Converters

Posted on 03 July 2012

       With reduced gate charge and stored energy in output capacitance, switching efficiency is increased Resonant converters are one of the most exciting power supply topology. These converters are very popular for many applications since its performance delivers increased power efficiency, minimized components count and reduced EMI over previous power supply topologies. By [...]

Acoustic Imaging for IGBT Reliability

Posted on 03 July 2012

      Uneven solder thickness can allow localized overheating Insulated Gate Bipolar Transistors, or IGBTs, are widely used in, trains, elevators, windmills and many other applications where robust high-power switching is required. Not surprisingly, IGBTs generate considerable heat in operation, and the heat must be efficiently dissipated to prevent the IGBT from overheating and [...]

Feedback Loop Op Amp Limitation Considerations

Posted on 03 July 2012

      Limit wherever possible the level of noise coming into the signal chain Pulse-width-modulated (PWM) converters have many gain elements in the feedback loop. These elements provide the means to regulate the converters output. Examples will be examined and discussed in terms of their impact on the control loop. By John Bottrill, Senior [...]

Optimizing MOSFET Selection in Handset and Portable DC Load Applications

Posted on 03 July 2012

      Trench 4 process targeting low voltage P-Channel MOSFET There are many applications where load switches are used for sequencing, protection, power management and distribution, etc. and each of these has their own characteristics. As portable electronics such as cell phones, portable media players, personal navigation devices, etc. continue to shrink in form [...]