Trans-inductor voltage regulator with averaging inductor DCR current sensing

An electrical circuit comprising:

• a compensation inductor;
• a plurality of transformers, each transformer of the plurality of transformers comprising a first winding and a second winding that are separated by a core, the second windings of the plurality of transformers being connected in series with the compensation inductor to form a trans-inductor loop that is connected to an output voltage of a trans-inductor voltage regulator (TLVR);
• and
• a plurality of regulator blocks, each regulator block of the plurality regulator blocks being configured to generate a phase of the output voltage of the TLVR, the regulator block having a first winding of a corresponding transformer of the plurality of transformers as an output inductor of the regulator block.

A method comprising:

• connecting a trans-inductor loop of a trans-inductor voltage regulator (TLVR) to an output voltage of the TLVR instead of to ground, wherein the trans-inductor loop comprises a compensation inductor that is connected in series with a second winding of each transformer of a plurality of transformers;
• sensing currents that flow through the compensation inductor and first windings of the plurality of transformers to generate an average sensed current;
• and
• generating a plurality of control signals that drives a plurality of regulator blocks of the TLVR based at least on the average sensed current, each regulator block of the plurality of regulator blocks being configured to generate a current that flows through a first winding of a corresponding transformer of the plurality of transformers to generate a phase of the output voltage of the TLVR.