Impact of Regulator Sense-point Location on PDN Response

摘要

Sense points optimally placed on a system to allow a feedback path for a DC-DC converter to regulate the DC voltage at that sense point. Typically this is done with only DC drop compensation in mind. This paper looks at how the stability and transfer function of the converter is affected by the location of the sense points with respect to the converter, the load, and the decoupling capacitors. The stackup will also be looked at, too, as it may affect each element of the PDN.