Disclosed is a method and structure for locally powering a semiconductor
chip within a package. The structure and method incorporate a local
voltage regulator mounted adjacent a semiconductor chip on a top surface
of a carrier. The voltage regulator is electrically connected to a power
plane disposed within the carrier. The voltage regulator continuously
senses the reflected voltage of the power plane at a regulated output
port and actively cancels time domain noise within its operational
bandwidth. Mounting the voltage regulator on top of the carrier adjacent
to the chip minimizes loop inductance between the regulator and power
plane and also minimizes delay caused by impedance of the power plane on
the current flowing to the chip.