2024 Volume 27 Issue 1 Pages 131-142
This paper provides a simulation modeling methodology for an isolated data transmission pulse transformer used for a multi-point transmission topology. When an equipment manufacturer creates an equivalent circuit model from the basic information that can be obtained from a pulse transformer manufacturer, there is a problem where the frequency band is insufficient and the quality of the waveform cannot be judged.
Therefore, we focused on the internal structure of the pulse transformer for the purpose of improving the accuracy of the equivalent circuit, devised an equivalent circuit that added elements that assumed coupling between windings, and fitted it to the actually measured S-Parameter. We confirmed that the ringback shape, which is an important feature of the waveform, was able to produce the desired waveform analysis accurately.
In the design of the signal transmission line between the control panels that make up the control system for the industrial application, this result suggests that it is possible to study the specifications of the pulse transformer by simulation without using large-scale waveform measurement as the main means of study.
