ESD - Contact Discharge
ESD is a very important phenomenon in the electronics world. Before a physical lab test one can predict adverse effects on a EUT through 3D ESD simulation. A simplified model of a typical ESD generator has been developed for CST Studio Suite. It allows for the accurate modeling of ESD current and field responses. It is possible to evaluate ESD performance virtually through simulation before fabrication or manufacturing. One can analyze the effects of various parts of the ESD generator on its performance and it can be matched as per the IEC standard. The virtual prototypes designed and simulated to compare the performance of ESD generator with measurement values shows the good accuracy. It is also showcased that how one can setup the ESD test setup for electronic EUT before actual ESD test using CST Studio Suite. These practices helps in minimizing human efforts and development of go to market product in less time.
The ESD IEC standard defines the ESD generator test setup which is modeled using SIMULIA CST Studio Suite and the simulations are carried out for different test levels specified in the standard i.e. 2kV, 4kV, 6kV, 8kV. Simulation results are compared with the performance requirements specified in the standard. The plot of time (ns) vs current (A) shows the ideal performance of an ESD generator. The waveform is mainly characterized by its rise time, first peak current of discharge, current at 30ns and 60ns.
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