Category | Application and Design

Protection Components for LED Lighting Systems

Posted on 19 November 2014

      All-round ESD and heat protection LED lighting systems require high-performance ESD and overtemperature protection if they are to live up to their potential in terms of lifetime, low maintenance costs and overall reliability. EPCOS protection components provide effective and cost-efficient protection for the LED arrays, their power supplies and control circuits. By [...]

Optimising the Quasi Resonant Flyback Transformer

Posted on 14 November 2014

      Most of the Isolated Offline Power Supplies less than 100W are flybacks. These converters have many advantages over other topologies. It is the least expensive isolated topology because it uses the fewest number of components. The transformer behaves as a coupled inductor, which stores the energy in the gap. This eliminates the [...]

Pushing Hall Effect Technology to New Limits

Posted on 06 November 2014

      Transducers break new ground in accuracy over a wide temperature range Reducing energy consumption and improving efficiency are key targets for most power electronics applications, especially in motor control drives, in uninterruptible and switch-mode power supplies or for industrial uses such as welding. Outside the industrial sphere, the same goals can be [...]

How Digital Isolation Technology Drives System-Level Efficiency

Posted on 23 October 2014

      Power supply efficiency continues to be an area of focus in the power electronics industry. Advances in power electronics components and topologies are driving individual power supply efficiencies to higher performance levels. The improvement in the efficiency of each power supply is an important – and essential – element in addressing the [...]

Optimized Core and Bobbin Allow for more than 25 Percent Increase in Power Handling

Posted on 15 October 2014

      DC/DC SMT transformer for PoE+, datacom, and industrial are the applications There are a wide variety of applications, including Power over Ethernet (PoE and PoE+), datacom/telecom and industrial, operating from a 12v, 24v or 48v input, that require an isolated switch mode power supply solution to convert the available input voltage to [...]

Thermal Efficiency of Chipscale Packaging for eGaN® FETs

Posted on 08 October 2014

      Semiconductor packaging has been saddled with four key complaints since the advent of the solid state transistor; (1) packages have too much resistance, (2) they have too much inductance, (3) they take up too much space, and (4) they have poor thermal properties that limit heat extraction. By David Reusch, Johan Strydom, [...]

Analysing Thermal Performance of Intelligent Power Modules for Better PCB Design

Posted on 02 October 2014

      Intelligent power modules are the designer’s choice for low-power motor-drive applications, particularly where cost and size constraints are tight. A new study of module thermal performance under various operating conditions helps designers to predict operating temperature, power and PCB design accurately for optimum reliability, cost and size. By Stefano Ruzza & Marco [...]

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 [...]

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 [...]