Current Reconstruction

Current Reconstruction operates effectively on the reverse principle of the ESD susceptibility scanning technique.

With current reconstruction, a system need not be running, nor even operational. In this mode, the scanning probe is used much as it is with EMI scanning, except that an ESD-like current pulse is injected into nodes of interest to identify the path and intensity of the injected energy as it is directed and dissipated throughout the system. Current Reconstruction operates effectively on the reverse principle of the ESD susceptibility scanning technique.

With current reconstruction, a system need not be running, nor even operational. In this mode, the scanning probe is used much as it is with EMI scanning, except that an ESD-like current pulse is injected into nodes of interest to identify the path and intensity of the injected energy as it is directed and dissipated throughout the system.

At each point on the grid, a sample is measured from the repeated pulse from which the current through local traces can be inferred.

Comparing these values with different components or different layout configurations can give quantitative design validation and margin enhancement characterization.

Comparing these current reconstruction maps to susceptibility maps can provide early warnings of trouble where known ESD entry vectors channel energy into or near susceptible ESD "hotspots."

Click here for the sample video.

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