Dual loop digital low drop regulator and current sharing control apparatus for distributable voltage regulators

A voltage regulator comprising:

• a first set of plurality of transistors coupled to an input power supply and an output node, the output node coupled to a load;
• a second set of plurality of transistors coupled to the input power supply and the output node;
• a first comparator with a first node coupled to the output node, and a second node coupled to a first reference;
• a second comparator with a first node coupled to the output node, and a second node coupled to a second reference, the second reference being different from the first reference;
• and
• a logic unit to receive output of the first comparator and output of the second comparator, the logic unit to generate an output for controlling gate terminals of the first and second sets of plurality of transistors according to outputs of the first and second comparators.

A system comprising:

• a memory unit;
• a processor coupled to the memory unit, the processor having a voltage regulator to provide power supply to logic units of the processor, the voltage regulator including:
• a plurality of transistors coupled to an input power supply and to a load;
• a first comparator with a first node coupled to the load, and a second node coupled to a first reference;
• a second comparator with a first node coupled to the load, and a second node coupled to a second reference, the second reference being different from the first reference;
• and
• a logic unit to receive output of the first comparator and output of the second comparator, the logic unit to turn on or off transistors of the plurality of transistors according to outputs of the first and second comparators;
• and
• a wireless interface for allowing the processor to communicate with another device.