Category | Application and Design

Wireless Power Transmission with High Efficiency and Wide Dynamic Range for Extensive Applications

Posted on 15 June 2015

      Wireless power transmission has been known for many years, with inductive near field proximity coupling being the most commonly used technology. By Markus Rehm, Ingenieurbuero Rehm, Villingen-Schwenningen, Germany The demand for wireless power supplies is huge: Mobile devices, charged without wire or contact, are robust, splash proof, reliable, simple to protect against [...]

SiC-Diodes, SiC-MOSFETs and Gate Driver IC

Posted on 18 May 2015

      The best use of SiC devices and applications are shown. Uninterruptible Power Supplies (UPS) will be described in more detail. Additional to SiC, a portfolio of very fast, high output current and high common noise immunity Gate Drivers will be introduced. Those devices can drive Si-SJFET and -IGBTs but are especially perfectly [...]

Optimizing Control of Both the Synchronous Rectifier and Primary MOSFET in Flyback Power Supplies Improves Efficiency and Reliability

Posted on 04 May 2015

      Overcomes the limitations of Schottky diode rectifier designs without the complexity of traditional synchronous rectifier implementations By Silvestro Fimiani, Senior Product Manager, Power Integrations Designers of flyback power supplies have generally used Schottky diode rectification in the output stage due to its simplicity and low cost. Diode-rectifier designs have proven adequate in [...]

Performance Comparisons of SiC Transistors, GaN Cascodes and Si - Coolmos in SMPS

Posted on 20 April 2015

      How do available SiC - transistors and GaN cascodes stack up against Si - Coolmos in real-world SMPS? Proven by extensive tests, neither SiC transistors nor GaN cascodes beat Si Coolmos. Alleged advantages of GaN are due to the cascode, not the material. By Dr. – Ing. Artur Seibt, Vienna Introduction and [...]

Web-based Simulation Tool to Simplify IGBT Selection and Thermal Design in Minutes

Posted on 16 April 2015

      By Kristofer Eberle, Plexim and Jiangmin Chunyu and Andrea Gorgerino, International Rectifier, An Infineon Technologies Company For a given voltage, current rating and package type, there can be many possible IGBT candidates. Additionally, the designer has to ensure that the power stage operates reliably within the thermal constraints. To alleviate these two [...]

A Low-Cost LED Driver Module, 0.5 A/33 V

Posted on 31 March 2015

      For general use, with efficiency above 90% This article describes a simple constant current driver module with fast PWM input that can be used for driving mid and high power LEDs. By Valentin Kulikov, FuturoLighting This module operates from 8V to 33V and the output current can be configured from 0.1 to [...]

PSU ICs use Innovative Technology to Reduce 25W Charger Cost and BOM Count

Posted on 24 March 2015

      Using new Fluxlink safety-isolated communication technology, InnoSwitch ICs combine primary- and secondary-switcher circuitry to reduce component count, eliminate slow and unreliable optocouplers, outperform primary-side controllers and slash manufacturing costs of power supply designs. By Mike Matthews, VP Product Development, Power Integrations Inc Manufacturers of smart mobile devices, set-top boxes, networking equipment and [...]

Philosophy of Topology and Components Selection for Cost and Performance in Automotive Converters

Posted on 17 February 2015

      The goal of this article is to draw the attention of power electronics design engineers who work, or are going to work, for the automotive industry. The general main requirements of electronics equipments for the automotive industry are Cost, Reliability, and Electromagnetic Compatibility (EMI). Obviously, this subject is too big for the [...]

Applying Power Circulation Theory to More Accurately Measure Power Loss and Efficiency

Posted on 26 January 2015

      The race is on to push efficiency in power conversion beyond 99%. It is a contest with innovative new topologies running neck-on-neck with standard half-bridge solutions featuring SiC and GaN semiconductors. A wide range of applications requires bidirectional power conversion, and it has to be ultra efficient for everything from solar inverters [...]

More Light with Less Power

Posted on 07 January 2015

      Report from LpS 2014 The LED professional Symposium + Expo 2014 (LpS 2014) took place from September 30th to October 2nd in Bregenz, Austria. 58 multidisciplinary expert talks, 5 hands on workshops and 2 tech-panels were hosted to inform the visitors about all aspects of LED lighting. Close to 100 companies were [...]