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Why does the PowerDC report show negative current through component pins or vias?

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When the current is negative, it means that the current is flowing from sink to VRM. A possible reason could be that there are two voltage sources connected to the component directly or through some other component, and the higher voltage source is forcing current to the lower voltage source though the component. As a result, the current through the component is negative and the higher voltage is changing the lower voltage.

Consider the following result from a VRM at 0.95V and another at 0.8V. Both are connected to the U3392 component.
 

Here, Vout = 0.8V is connected to FB2818, which is connected to U3392. 

U3392 is also connected to 0.95V.

As a result, 0.95V is forcing current to 0.8V, which is negative current through FB2818.



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