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Setting DC impedance for nets

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We do quite a lot of designs where we use the trace resistance to balance diodes in parallel for DC currents. Is there any way we can set the a impedance constraint for this so we can control the lengths automatically? Since we vary the width on these traces and mix them with copper polygons, we cannot simply set a track length constraint... We'd need to have a constraint on total resistance from end to end on a single net.

Best regards, Mysil


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