Category | August

More Reliability by High Integration

Posted on 02 August 2012

    The advantages of integrated filter technology Today, power quality (PQ) filters are critical components in modern power conversion applications. PQ filters are used in traditional motor drives and increasingly in renewable energy applications. These applications often need power converters to adjust the power demand and convert different energy sources for use in existing [...]

Increasing IGBT Inverter Power Density

Posted on 02 August 2012

      High-temperature capable and low-inductive design Increasing the power density is a key development factor for power electronic inverter systems. On IGBT chip level the current density was increased by a factor of three in the last 22 years. Progress in the IGBT technology and the utilization of new materials like silicon carbide [...]

Fast Acting Fuse for Semiconductor Protection

Posted on 02 August 2012

      Protect IGBT, IEGT, IGCT for drives as well as large diode and thyristor With the birth of semiconductor in the 50´s and their use in power converters the need of protection with fuse came along. Fuses for the protection of semiconductor, known as semiconductor fuse, have grown in demand and performances. Applied [...]

SuperFET® II a Super-Junction MOSFET that Provides Low EMI

Posted on 02 August 2012

      Stable Operation with Excellent Noise Reduction in PFC Applications Super-Junction MOSFET based on charge balanced technology offer outstanding performance with respect to reduce both on-resistance and parasitic capacitances, which usually are in trade-off. With smaller parasitic capacitances, the super-junction MOSFETs have extremely fast switching characteristics and therefore reduced switching losses. By Wonsuk [...]

The Time Has Come

Posted on 02 August 2012

      Piezoelectric MEMS Oscillators for Industrial Frequency Control An accurate oscillator lies at the ticking heart of all digital electronics, from consumer multimedia products to industrial automation and monitoring systems, networking and communications infrastructure, and rugged military equipment. Historically, engineers have exploited the resonant properties of quartz to support accurate timing. Unrelenting pressure [...]

Driving IGBTs in Parallel is Plug-and-Play

Posted on 02 August 2012

      A new compact family of IGBT drivers provides better silicon usage and reduces the overall cost of high-power systems By Olivier Garcia, CT-Concept Technologie AG   High-voltage/high-current drivers are a vital element of power electrical systems. In power converter applications such as traction, HVDC, medium-voltage drives or renewables, the performance of the [...]

Negative Input Resistance and RMS Input Currents

Posted on 02 August 2012

      The often unrecognized plagues of dc/dc converters Many SMPS designers and users of modules will have been puzzled by mysterious wild oscillations and bewildered by their resistance to changes in the regulation loop. DC/DC converters suffer from negative input resistance which can cause wild oscillations and overstressing of components, especially in conjunction [...]