Patent ID: 11888404
Assignee: DELTA ELECTRONICS, INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. A method of controlling a DC-DC converter having a plurality of stages including first, second and third stages, the method comprising acts of:
measuring a plurality of electrical properties of the DC-DC converter;
determining a switching frequency, phase delay, and phase shift based at least in part on the measured plurality of electrical properties;
switching a first plurality of switches of the first stage at the switching frequency;
switching at least two of a second plurality of switches of the second stage at the switching frequency, time shifted by the phase delay relative to switching of at least one of the first plurality of switches;
switching at least two of a third plurality of switches of the third stage at the switching frequency, time shifted by the phase shift relative to switching of at least one of the first plurality of switches; and
varying the switching frequency of the first plurality of switches or the second plurality of switches to regulate current corresponding to the second power stage,
wherein the second power stage and the third power stage are controlled independently from each other.