Category | Bodo’s Power

Superior Thermal Stability for Power Modules Achieved by Enhanced Base Plate Design and Optimized Thermal Interface Material

Posted on 04 April 2014

      Power semiconductors need to be thermally connected to a heat sink. Besides the mounting process, the thermal interface materials used as well as base plate design have a combined influence on the thermal transfer. In addition to an initial state, the change of the thermal transfer under dynamic load is observed. Micro-movements [...]

Super Capacitors, the Unknown Capacity Giants

Posted on 03 April 2014

      The unit of capacitance farad (F) has been known only in combination with the prefixes micro, nano, and pico for a long time. Nowadays, however, kilofarads have become possible. How do these new super capacitors work, which base on a principle that was discovered 160 years ago? By Wolf-Dieter Roth, HY-LINE Power [...]

State-of-the-Art Intelligent Power Modules for Appliance Motor Drives

Posted on 02 April 2014

      The latest report into the World Market for Major Home Appliances, by IHS, predicts the industry will spend $3.8 billion on semiconductors by 2017, as new generations of products become more sophisticated and feature-rich. By Alberto Guerra, International Rectifier Corporation The fastest growing sector will be power semiconductors including Intelligent Power Modules [...]

Investigating Effects of Non-Idealities of Current Sensors and Powertrain on the Performance of an EV System

Posted on 01 April 2014

      Drive system applications experience a significant coupling between the controls, electrical and mechanical domains. To fully understand the behavior of the entire electromechanical system, the characteristics of the individual domains and their effects on the overall system must be taken into account. PLECS is a simulation tool developed for drives engineers that [...]

Envelope Tracking for Cellular RF Power Amplifiers

Posted on 31 March 2014

      Mobile device functionality has evolved dramatically over the past decade and continues to expand with applications such as social media, music and video streaming, gaming, cloud storage, and connectivity with other devices. By Juha Pennanen, John Hoversten and Sasa Radovanovic, Texas Instruments The redefined user experience requires high data rates offered by [...]

Flexible Power Based on a Modular Concept

Posted on 27 March 2014

      Ready-to-use inverters from the most varied manufacturers in diverse power classes simplify the realisation of projects because no expensive development of the electronic output stage is required. The user receives a complete and qualified solution, but variability and consideration of specific wishes are often neglected. VARIS™, the new modular inverter system, has [...]

Comparison of Silicon Versus Gallium Nitride FETs for the Use in Power Inverters for Brushless DC Servo Motors

Posted on 17 March 2014

      The Institute of Robotics and Mechatronics of the German Aerospace Centre (DLR) is actually developing a new lightweight robot named SARA, what stands for Safe Robot Assistant. As successor of the LBR III it is the 4th generation of lightweight robots made at the institute. It will feature safe sensor signal supervision [...]

Methods of Current Measurement in Mid-Frequency Power Circuits

Posted on 14 March 2014

      Fast-changing power current precise measurements are very important in modern measuring equipment for power semiconductor devices. It is quite important for converter equipment as well, since improved control algorithms are used there, which require knowledge of instantaneous current value in a certain period of time. By Alexey Poleshchuk, R&D Center, Proton-Electrotex JSC [...]

Power meets Precision

Posted on 13 March 2014

      The PX8000 Precision Power Scope is a mixture of power-analyzer and oscilloscope DLM4000, WT3000, DL850E – Yokogawa’s last year’s developments focused on power measurement in a special way. The new Power Scope PX8000 is supposed to fill a gap in this power measurement solution as it combines power-analyzer and oscilloscope functions. By [...]

WPC Standard Wireless Charger Receiver Solution Based on FPGA

Posted on 11 March 2014

      By Louis Tang, Fairchild Semiconductor Background With the vigorous development of wireless charger technology, and as more smartphone users are plagued by various charging cables, the convenience of a wireless charger will be widely accepted and adopted. Currently there are three different wireless charger standards – WPC (Qi), PMA and A4WP. The [...]