In-system tuning of multi-phase power converter circuits

A method, comprising:

• activating, by a control circuit during a first time period, a first phase circuit of a plurality of phase circuits included in a multi-phase power converter circuit, wherein the first phase circuit is coupled to a regulated power supply node via a first inductor;
• measuring, by the control circuit during the first time period, at least one parameter associated with the regulated power supply node to generate a first value;
• activating, by the control circuit during a second time period, a second phase circuit of the plurality of phase circuits, wherein the second phase circuit is coupled to the regulated power supply node via a second inductor;
• measuring, by the control circuit during the second time period, the at least one parameter of the regulated power supply node to generate a second value;
• performing, by the control circuit, a comparison of the first value and the second value;
• and
• adjusting, by the control circuit, one or more operating characteristics of the second phase circuit using a result of the comparison.

A system, comprising:

• a first integrated circuit that includes a first phase circuit coupled to a regulated power supply node via a first inductor, wherein the first phase circuit is configured, in response to being activated, to source a first current to the regulated power supply node via the first inductor;
• and
• a second integrated circuit that includes:
• a second phase circuit coupled to the regulated power supply node via a second inductor, wherein the second phase circuit is configured, in response to being activated, to source a second current to the regulated power supply node via the second inductor;
• and
• a control circuit configured to:
• activate, during an initial time period, the second phase circuit;
• measure, during the initial time period, at least one parameter of the regulated power supply node to generate an initial value;
• activate, during a different time period, the first phase circuit;
• measure, during the different time period, the at least one parameter of the regulated power supply node to generate a different value;
• perform a comparison of the initial value and the different value;
• and
• adjust one or more operating characteristics of the first phase circuit using a result of the comparison.