Patent ID: 8659276
Filing Date: 2014-02-25
Classification: H02M

Abstract:
1. An interleaved power converter for converting a DC voltage source into a DC voltage output, the converter comprising:— two or more sub-circuits connected in parallel, each sub-circuit comprising an inductive element, a rectifying element and a controllable switching device connected for converting a DC voltage source into a DC voltage output; driving means for driving the switching device of each sub-circuit to repeatedly switch on at a time t current sensing means for repeatedly determining an input current value associated with each sub-circuit, by sensing the input current of the converter at a sample point a pre-determined time relative to the switch-on time t control means comprising:— comparator means for comparing the input current value determined at each sample point with the input current value determined at the preceding sample point, to obtain a measure of current imbalance attributable to one or both of the sub-circuits with which the compared input current values are associated; and current balancing means for adjusting the time interval Ton from t