June 2017

Experience TDK technology competence LIVE!

User Forum: "Passive components for professionals"

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  • June 27 and 28, 2017
  • Tuesday 9:00 am to 7:00 pm
    Wednesday 9:00 am to 5:30 pm
  • Novotel München Messe
    Willy-Brandt-Platz 1
    81829 Munich, Germany

At the Passive für Profis user forum staged by WEKA and attended by high-caliber participants, the contribution from TDK Corporation will comprise an intensive seminar on "Capacitors" and four technical presentations. In addition, TDK will be presenting key components from the field of capacitors, inductances, and voltage- and temperature-dependent resistors in the exhibition area.

These three classic groups of passive component are the central focus of the Forum. The range of topics covered by the presentations extends from the features that depend on the material or design, and the advantages and disadvantages of various designs (frequency, temperature and voltage dependence), to the electromagnetic compatibility and statements on the interaction with active components and ICs.
Further information, the complete program of presentations and the registration form for the WEKA User Forum can be found at www.passive-anwenderforum.de.


Overview of the TDK presentations:

June 28, 9:30 to 10:00 am

Intensive seminar: "Capacitors"

Dr. Sebastian Schöll
R&D Engineer for Development and Application of Aluminum Electrolytic Capacitors
TDK Aluminum and Film Capacitors Business Group

On the second day of the Forum, Dr. Sebastian Schöll presents the world of capacitors in an intensive seminar. His overview covers the different capacitor types, their functions and the key circuits in power electronics. Furthermore, he explains the problem of parasitic coefficients and answers the question concerning how capacitors change their properties on a non-linear basis and dependent on the circuit for almost all parameters.


June 27, 11:00 to 11:30 am

Specialist presentation "Design-in of inductive components, taking saturation behavior into consideration"

Dr. Stefan Weber
Vice President Development & Application
TDK Magnetics Business Group

The saturation behavior of inductive components such as chokes and transformers plays an important role in determining the size of power electronics applications. When optimizing the size, the efficiency and, not least, the costs, the saturation requirements must also be precisely defined and optimized. For this purpose, simulation methods are used that permit the calculation of the apparent and differential inductance. With regard to the correct simulation of the small-signal inductance by means of DC magnetic bias, however, there is a gap among the commercially available simulators. With the development of the "permeability-link method", it has now been possible to close this gap.


June 27, 14:45 to 15:15 pm

Specialist presentation: "Overvoltage protection using varistors"

Jürgen Konrad
Head of Product Development Multilayer
TDK Piezo and Protection Devices Business Group

The protection of electrical circuits against overvoltage is a constant requirement during development. For this purpose, various technologies are available which are subdivided into application areas, connection technologies, energy consumption capacities and parasitic influencing factors. On the basis of material and component parameters of overvoltage protection elements, Jürgen Konrad demonstrates the relationship that exists between performance values and reliable protection. In addition, he compares different overvoltage protection technologies. Particular attention is paid to a completely new technology in which the overvoltage protection is integrated into the printed circuit board.


June 27, 15:15 to 15:45 pm

Specialist presentation "PTC thermistors – versatile components"

Dr. Bernhard Steinberger
Field Application Engineer Multilayer Technology
TDK Piezo and Protection Devices Business Group

Ceramic PTC thermistors are suitable for a wide range of applications in electrical and electronic engineering. They can be used, for example, as self-resetting fuses or as temperature sensors for the protection of motors, transformers or power semiconductors. Further applications include their function as starters for compressor motors, as current limiters in power supply units or as self-regulating heating elements, for example in vehicles or in adhesive guns. Regarding the criteria for the correct component, particular attention is paid to the selection of PTC thermistors in their function as current limiters for the charging of capacitors.


June 28, 10:00 to 10:30 am

Specialist presentation: "Tips for optimum design-in of aluminum electrolytic capacitors"

Dr. Sebastian Schöll
R&D Engineer for Development and Application of Aluminum Electrolytic Capacitors
TDK Aluminum and Film Capacitors Business Group

One essential selection criterion for aluminum electrolytic capacitors is their life expectancy under changing operating conditions such as temperature and current loading. Because these capacitors – like other components – are subject to aging, which leads to a continuous change in the electrical properties and performance over their service life. Knowledge about the causes and above all the effects of these aging processes is decisive for a good system design. Using examples from practical circuits from industrial electronics, the service life calculation of aluminum electrolytic capacitors is presented, taking into consideration the fluctuating operating conditions.

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