Phase current balancing for multiphase converters

A method, comprising:

• generating a first output current based on a first differential voltage from a first power stage that drives a first inductor of a DC-DC converter, wherein the first differential voltage is representative of the current flowing though the first inductor;
• generating a second output current based on a second differential voltage from a second power stage that drives a second inductor of the DC-DC converter, wherein the second differential voltage is representative of the current flowing though the second inductor;
• and
• integrating the first output current and second output current into a compensation signal to adjust current balancing in the DC-DC converter.

A DC-DC converter, comprising:

• a first differential voltage sensor to detect a first inductor current by sensing a first differential voltage across a first power stage of the DC-DC converter;
• a first transconductance amplifier that receives the first differential voltage as input and generates a first output current that represents the first differential voltage across the first power stage of the DC-DC converter;
• a second differential voltage sensor to detect a second inductor current by sensing a second differential voltage across a second power stage of the DC-DC converter;
• a second transconductance amplifier that receives the second differential voltage as input and generates a second output current that represents the second differential voltage across the second power stage of the DC-DC converter;
• and
• an integrator stage to combine the first output current from the first transconductance amplifier and the second output current from the second transconductance amplifier to generate a compensation signal to adjust current balancing for the DC-DC converter.