Category | 2009

Sensorless Control for Electrical and Hybrid Electric Vehicles

Posted on 22 August 2012

      An Overview and Simulation For Electrical Vehicles (EV) and Hybrid Electrical Vehicles (HEV) sensorless control of electric machines is a particular relevant topic. There are two main reasons why. Firstly mechanical position sensors are difficult to integrate and to implement into the driveline of the vehicle. Secondly the mechanical sensors are fragile [...]

Flyback Converter and Snubber Design

Posted on 13 August 2012

      Every application has its special needs The Flyback topology is very common for DC/DC converters. Their advantages are the simple design and the low component cost. The function principle is simple. Only a few components are needed. The following article gives some practical ideas to design a Flyback converter. By Ralf Negele, [...]

Compact High-Performance Current Transducers

Posted on 23 July 2012

      Insulated Highly Accurate Measurements from 1.5 to 50 ARMS The Power Electronics market is in constant change and always on the lookout for new technologies to achieve better cost and performance. To enable applications with enhanced performance, current measurement is one of the key functions for global improvement in precision and efficiency [...]

The Technical Benefits of PrimePACK™ Modules in CAV Applications

Posted on 23 July 2012

      Module baseplate is a key design element for robustness and extended system lifetime The increase in energy consumption and crude oil demand over the last decade has created increasing pollution and global warming. Electrification of propulsion drives in vehicles improves the transmission efficiency and allows significant savings in fuel costs and CO2 [...]

Fiber Optics in Solar Energy Applications

Posted on 23 July 2012

      They offer insulation protection from high-voltage/current glitches Solar energy has recently become a popular alternative source to meet energy demands around the world due to the fluctuation of oil/coal prices and global warming issues. Oil is a limited and diminishing resource, and because of this, the price surges when demand is high. [...]

History of FET Technology and the Move to NexFET™

Posted on 23 July 2012

      The advantage comes from the low-input gate charge Introduced as a substitute for bipolar transistors, power MOSFETs were used as an electronic switch for power management applications. A power MOSFET has a high input impedance. This means it is a voltage-controlled, unlike the current-controlled, bipolar switch. In other words, a power MOSFET [...]

Intelligent Interleaving: Advanced PFC Controller for High Efficiency AC-DC Power Supplies

Posted on 23 July 2012

      The required external circuitry is reduced from a two-pole filter to a simple resistive divider The FAN9612 Interleaved Dual Boundary Conduction Mode (BCM) Power Factor Correction (PFC) controller introduces several innovative, distinguishing functions aimed at maximizing efficiency, reducing external components and offering a robust set of protection features. By Steve Mappus, Systems [...]

Optimizing Microcontroller Power Efficiency for Ultra Low Power Designs

Posted on 23 July 2012

      To preserve efficiency, the MCU needs to support multiple operating modes The rise of ultra low power applications has changed how developers must approach power optimization. Devices must support single-cell battery operation, charge/discharge closer to battery thresholds, and be able to control motors and/or high brightness LEDs, all while reducing device form [...]

A Truly Connected Mobile Experience

Posted on 23 July 2012

      The Push for USB OTG The beauty is to charge a battery per the latest USB Battery Charging Specs, using a high efficiency buck topology converter that utilizes a chip inductor for minimized space and cost, but can then run the buck controller in reverse as an effective boost controller requiring no [...]

Interview on Thermal Management Technology with Marc Vinet, Executive Vice-President, Ferraz Shawmut

Posted on 23 July 2012

      By Bodo Arlt, Editor BPS   Bodo Arlt: What end markets will drive Thermal Management technology at Ferraz Shawmut? Marc Vinet: Thermal Management is one key asset of Ferraz Shawmut besides its well-known Circuit Protection solutions to answer to the market demands linked to sustainable development. We see three clear surging demands [...]