Power Management Integrated Circuit with a Field Programmable Array of Voltage Regulators

A semiconductor device includes a plurality of voltage regulators arranged in a field programmable array and a power array controller coupled to the plurality of voltage regulators. The power array controller is configured to control the plurality of voltage regulators to output power to a plurality of power rails. Each power rail provides a respective rail current at a respective rail voltage. The power array controller is configured to for each of the plurality of power rails, determine the respective rail current associated with the respective power rail, select a subset of voltage regulators according to at least the respective rail current, and enable the subset of voltage regulators to generate the respective rail voltage and provide the respective rail current collectively.