Assuming you are referring to the switching loss graph, the data entered in the table and Z axis in the graph is in energy (J, mJ, or uJ). The voltages and currents in the graph are not multiplied since switching loss energy is a function of the voltage and current transients, as shown below. The Eon/Eoff values in the figure below would correspond to the entries in the table for a given voltage and current condition. The figure is from the thermal modeling section of the PLECS Manual.
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