Patent ID: 8330438

Claim:
A multiphase switching power converter comprising: a group including at least three switching power conversion phases that are activated to provide current to a load, each power conversion phase in the group delivering a portion of the current delivered to the load, each power conversion phase in the group having a respective digital control variable for altering current delivered by a respective phase to the load, and a phase current equalization apparatus configured to: while controlling at least one power converter phase in the group to deliver a same amount of current to the load as delivered in a previous phase control cycle, alter, via opposite adjustments, digital control variables associated with each of a first power converter phase and a second power converter phase in the group to adjust a magnitude of current delivered to the load by each of the first power converter phase and the second power converter phase toward equality; the phase current equalization apparatus suspending altering of the digital control variables if a difference between the maximum and the minimum current is below a predetermined threshold.