Over-current protection in multiphase dc-dc switching regulators

A method of over-current protection comprising:

• generating one or more input voltages, a summed voltage and an average voltage in response to one or more differential voltages;
• generating one or more control signals in response to the one or more input voltages and the average voltage;
• generating an initiation signal in response to the summed voltage and an output voltage;
• and
• generating one or more PWM (pulse width modulated) signals in response to the initiation signal and the one or more control signals.

A computing device comprising:

• a processing unit;
• a memory module coupled to the processing unit;
• and
• a switching regulator coupled to the processing unit and the memory module, the switching regulator comprising an over-current protection circuit, the over-current protection circuit comprising:
• a signal generating block configured to generate one or more input voltages, a summed voltage and an average voltage in response to one or more differential voltages;
• a control block configured to generate one or more control signals in response to the one or more input voltages and the average voltage;
• an analog control loop block configured to generate an initiation signal in response to the summed voltage and an output voltage;
• and
• a phase control logic block configured to generate one or more PWM (pulse width modulated) signals in response to the initiation signal and the one or more control signals.