Multi-phase power regulator

A multi-phase power regulator, comprising:

• a first phase, including:
• a first switch having a first terminal and a second terminal, the first terminal coupled to a voltage source, the second terminal coupled to a first inductor terminal that is coupled to an output of the multi-phase power regulator;
• a first driver coupled to the first switch, the first driver configured to control the first switch;
• and
• a first sense resistor adapted to be coupled to the first inductor terminal;
• and
• a second phase, comprising:
• a second switch having a third terminal and a fourth terminal, the third terminal coupled to the voltage source, the fourth terminal coupled to a second inductor terminal that is coupled to the multi-phase power regulator;
• a second driver coupled to the second switch, the second driver configured to control the second switch;
• and
• a second sense resistor coupled to the second inductor terminal;
• and
• control circuitry comprising:
• a common terminal coupled to the first sense resistor and to the second sense resistor;
• phase management circuitry coupled to the first driver and to the second driver, the phase management circuitry configured to control the first driver and the second driver;
• phase shedding circuitry having an input, the phase shedding circuitry coupled to the phase management circuitry and to the common terminal;
• and
• a comparator coupled to the output of the multi-phase power regulator and to the input of the phase shedding circuitry, the comparator configured to provide a comparison result responsive to an output voltage at the output, wherein the phase shedding circuitry is configured to:
• determine a number of the phases to activate or deactivate responsive to the comparison result;
• and
• control the phase management circuitry to activate or deactivate the number of the phases.