Category | October

Original or Fake

Posted on 05 July 2012

      Allocation the root of all evil Recently, the number of incidents where users submit complaints to the manufacturer about power semiconductor failures is steadily increasing. Failure analyses show that these power semiconductors are counterfeits or rejects originally intended for scrapping. How can you protect yourself from such counterfeits and what is the [...]

IGBT Drivers Provide Reliable Protection

Posted on 05 July 2012

      To ensure that power electronic components are reliably protected from the effects of non-permissible operating conditions, fast and reliable error detection and effective protective measures are needed. In power modules, error management can be provided either by the system controller or by IGBT drivers. By Johannes Krapp, Product Manager Driver Electronics, Semikron [...]

Opportunities & Threats from Emerging Countries’ Automotive Solutions

Posted on 05 July 2012

      Major component and system suppliers are setting up advanced design centers for next-generation vehicles To understand the various different approaches taken by automotive manufacturers in various territories worldwide, it can be helpful to visualize a triangle in which each corner represents the three automotive values of “Quality”, “Cost” and “Technology/Innovation” (see figure [...]

Electromagnetic Compatibility Considerations for Switched Mode Power Supplies

Posted on 05 July 2012

      Characterization of the EMI problem requires understanding the interference source Switched Mode Power Supplies (SMPS) generate Electromagnetic Interference (EMI) by virtue of their inherent design characteristics. Internal SMPS circuits that generate undesirable emissions that are rich in harmonics can cause electrical interference both internally to the circuit in which the power supply [...]

Optical Isolation Amplifiers and Gate Driver Optocouplers

Posted on 05 July 2012

      Both help improve efficiency and protect micro-inverters in PV solar applications In 2009, the residential solar photovoltaic (PV) inverter market represented 90 percent of the total PV inverter worldwide market based on the number of units shipped. Growing at an annual average rate of 26 percent, the number of residential inverters sold [...]

ITxx Current Transducers, setting the benchmark for accuracy!

Posted on 05 July 2012

      Certain Power Electronics applications require such extraordinary performance in accuracy, drift or response time that it is necessary to switch to advanced technologies to achieve them. The validation of equipment is often made through recognized laboratories using highly accurate performance test benches supported by high-tech subassemblies, including extremely accurate current transducers. These [...]

Keep it Cool – Ceramic simplifies Heat Dissipation

Posted on 05 July 2012

      Thermal energy must be transferred to the surrounding area LEDs suffer heat problems limiting their success as a light source. Much attention is given to the heatsink, less to the layers and barriers between LED and the heat dissipating surface. A change of concept and material allows significant gains in thermal management [...]