A method and system for improving power distribution and/or current
measurement on a printed circuit board is disclosed. According to the
invention, a first power plane adapted for current measurement includes a
first segment to which a current source is connected and a second segment
to which other devices may be connected, forming the current load. A
third segment is used to measure the current between the first segment
and the second segment through two vias that link two points of the third
segment to, preferably, two pads of the external layer. In a preferred
embodiment, vias are connected to the first segment so that current flow
in the third segment is linear, to improve and simplify current
determination. The resistivity between the pair of vias may be computed
or estimated using calibrated currents.