Category | November

Interview on Power Semiconductor Technology with Izak Bencuya, Vice President, GM Fairchild

Posted on 01 November 2006

       By Bodo Arlt, Editor BPSD   Bodo Arlt: What end markets will drive module technology? Izak Bencuya: Industrial markets are the first for modules followed by consumer appliance with variable speed inverter drives. This is mainly seen in Japan and China. Computing/server applications needing high efficiency will follow. Bodo Arlt: What is [...]

Sensorless Motor Control Algorithm

Posted on 01 November 2006

       Delivery of Improved Appliance Efficiency Conservation of energy is one of the most important challenges facing us in the 21st century. Recent advances in sensorless permanent magnet motor control technology can help to address this challenge by significantly reducing the energy used in appliances such as refrigerators, washers, fans, and air conditioners. [...]

Best Layout Practices for Switching Power Supplies

Posted on 01 November 2006

       Most power supplies are laid out on multi-layer boards Typical power supplies consist of a mixture of power components handling switching voltages and currents of large value and amplitude, and small signal components handling low-level analog signals, all in close proximity. By L. Haachitaba Mweene, Applications Manager, National Semiconductor   Laying out [...]

Advancements in MOSFET Technology for High Switching Frequency Applications

Posted on 01 November 2006

      By Tom Loder, Vice President of Sales & Marketing, Microsemi Power Products Group   Power metal-oxide semiconductor field-effect transistors (MOSFETs) are known for superior switching speed, and low gate drive power. In these respects, power MOSFETs approach the characteristics of an “ideal switch.” Because of these features, power MOSFETs are the best [...]

Large Form Factor Video Displays

Posted on 01 November 2006

      Dot correction reduces system cost The LED lighting market is growing rapidly with applications ranging from alphanumeric informational displays to high quality, large form-factor video displays. These markets suffer from two opposing market forces: pressure for higher quality displays, and pressure for lower cost solutions. By Michael Day, Power Management Application Supervisor [...]

Efficient Virtual Prototyping of Electric Drive Systems

Posted on 01 November 2006

       Improving electrical, mechatronic, power-electronic, and electromechanical systems. Automotive engineers can now predict efficiency and fuel economy of vehicle designs, power management strategies, and the electrical design in one integrated design environment. With Simplorer, engineers can simulate complete drivetrains by combining fuel cells, batteries, power electronics, and electric motors in one model. By [...]

Optimising the Power Switch in High Voltage Applications

Posted on 01 November 2006

       High voltage bipolar transistors in SMT package Small high voltage loads are today found in abundance. Be they actuators, motors, solenoids or transformers, power supply or power conversion circuits, all are subject to the relentless quest for better energy efficiency, improved reliability, and reduced cost and footprint. By Peter Blair, Discrete Product [...]

Current Control for the Switched Reluctance Machine with Enhanced Performance

Posted on 01 November 2006

       Improved current control can be utilized effectively for torque control Switched reluctance machines (SRM) become more and more attractive for many industrial applications due to their simple structure, high speed, high torque and low cost. One of the major disadvantages of the SRMs is the torque ripple. The torque is often controlled [...]

The Internally Commutated Thyristor (ICT)

Posted on 01 November 2006

       A new GCT with integrated turn-off unit Today, Gate Commutated Thyristors (GCTs) and Insulated Gate Bipolar Transistors (IGBTs) dominate the high-power semiconductor market. While IGBTs are mainly offered in modules, GCTs are only available in press-pack housings. Since the operation of GCTs requires a very low inductive and low resistive connection between [...]

Selection, Power Loss Calculation, and Temperature Rise Analysis

Posted on 01 November 2006

       All-in-one efficient online tool for the power modules MELCOSIM offers a variety of possibilities to calculate the power loss and temperature rise for several different circuits and load conditions in order to give application support for the available Mitsubishi power modules. By Prasad Bhalerao and Eugen Stumpf, Mitsubishi Electric Europe, Germany   [...]