Dynamically configurable voltage regulator for integrated circuits

A system, comprising:

• a power switch away having multiple pass transistors;
• a voltage regulator array having multiple voltage regulators each coupled to a subset of said pass transistors;
• a subsystem circuit array having multiple subsystem circuits each coupled to a subset of said pass transistors;
• a power management control unit coupled to said pass transistors and said voltage regulators, said power management control unit to control said pass transistors and voltage regulators to provide different amounts of power to said subsystem circuits;
• a main power supply to couple to said voltage regulator array;
• and
• a current sensor disposed between the main power supply and said voltage regulators, and multiple current sensors disposed between said pass transistors and said subsystem circuits, said current sensors providing output current values to said power management control unit, said power management control to output a voltage regulator control signal and a pass transistor control signal to modify power to a subsystem circuit based on said output current values.

A method, comprising

• coupling voltage regulators to a subsystem circuit through a set of pass transistors;
• receiving power at a first voltage level by said voltage regulators;
• converting said power to a second voltage level by said voltage regulators;
• passing said power at said second voltage level to the subsystem circuit through said pass transistors;
• sensing a current level;
• and
• selecting said voltage regulators and said pass transistors based on said current level.