Methods and apparatus to phase shed a multi-phase voltage regulator

An apparatus comprising:

• a first power stage;
• a second power stage;
• and
• a controller coupled to the first power stage and the second power stage, the controller capable of:
• sensing a power supply by the first power stage and the second power stage;
• comparing the power supplied by the first power stage and the second power stage to a threshold;
• disabling the first power stage based on a dropout order responsive to the comparison;
• and
• adjusting the dropout order responsive to power supplied by the first power stage and the second power stage.

An apparatus comprising:

• pulse width modulation (PWM) generation circuitry capable of generating a first group of PWM signals and a second group of PWM signals;
• and
• dropout circuitry coupled to the PWM generation circuitry, the dropout circuitry capable of:
• generating a first dropout order of the first group of PWM signals;
• generating a second dropout order of the second group of PWM signals;
• adjusting the first dropout order of the first group of PWM signals responsive to a rotation event;
• and
• adjusting the second dropout order of the second group of PWM signals responsive to a rotation event.