Category | September

SiC: The Reliability Aspect and Practical Experience (Test)

Posted on 18 September 2014

      By Jochen Hüskens, Product Marketing Manager, ROHM Semiconductor GmbH Reliability of SiC SBDs Obviously, breakdown issues in the outer periphery structure of SiCSBD caused by high dV/dt were reported for conventional products but such breakdowns have not been observed in ROHM’s SiC SBDs at dV/dt up to 50 kV/us. In life tests, [...]

Practical, Efficient and Safe Power Device Thermal Characterisation

Posted on 17 September 2014

      By Hisao Kakitani, Koji Tokuno and Ryo Takeda; Keysight Technologies Japan Power devices are used in a wide range of applications such as; train, automotive, traction, power generation etc. that are operated in harsh and extreme environmental conditions. Robust design for reliability and safety are paramount in these applications. A key initial [...]

Going Mini

Posted on 15 September 2014

      Another step towards small power applications Vincotech goes mini with the next smaller housing size, taking another step towards small power applications where discrete components have figured so prominently in the past. Various topologies featuring diodes, IGBTs and MOSFETs may be implemented with the new housing to help miniaturize devices, minimize stray [...]

Semiconductor Advances for Lower-Cost EVs

Posted on 12 September 2014

      The world is getting ready to drive electric. Established car brands are adding new plug-in hybrids and full EVs to their ranges, and even supercar manufacturers are taking advantage of electric drive. Governments are also backing the move: a recent EU draft agreement proposes new national minimum targets for publicly accessible EV [...]

What to Watch for when Turning on a SMPS for the First Time

Posted on 10 September 2014

      In the near future, SMPS will completely displace conventional supplies, hence also engineers who are no specialists will have to cope with them. Turning on a new or unknown SMPS, especially offline - SMPS, can have unexpected and disastrous effects. This article describes some dangers, precautions and procedures for setting up and [...]

Matching Circuit Topologies and Power Semiconductors for Energy Storage in Photovoltaic Systems

Posted on 08 September 2014

      Due to recent changes of regulations and standards, energy storage is expected to become an increasingly interesting addition for photovoltaic installations, especially for systems below 30kW. A variety of circuit topologies can be used for the battery charger stage. By Dr. Vladimir Scarpa, Pablo Cortes Lopez, Infineon Technologies AG These will require [...]

Comparing the Benefits of Using an Integrated Power Module versus a Discrete Regulator

Posted on 01 September 2014

      Today’s power systems for communications and computing infrastructure support high current loads from increasingly power hungry FPGAs, ASICs and microprocessors. To supply these high current circuits, equipment makers often rely on discrete power solutions that are complicated, take up valuable real-estate and may have significant power output limitations. By Chance Dunlap, Intersil [...]

Getting the Best Performance from AC to DC Power Supplies in Abusive Environments

Posted on 29 August 2014

      By Ira J. Pitel Ph.D., Magna Power Electronics INTRODUCTION Ac to dc power supplies can be found in applications where power needs to be processed from the ac power mains to loads requiring a fixed or variable dc voltage or current. While such equipment has few input and output connections, engineers frequently [...]

Reliability of Advanced Power Modules for Extended Maximum Junction Temperatures

Posted on 26 August 2014

      In the early days of power electronics, lifetime assessment was restricted to maximum load conditions and generous margins. Today, application specific mission profiles, which reflect the dynamic behavior of the load and of the cooling system, are evaluated to estimate the lifetime of power electronic systems. This approach improves the prediction quality, [...]