The controller for an interleave power converter and interleave power converters

Japanese Patent JP6041507

B2

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 (L1, T1), a rectifying element (D1, D2) and a controllable switching device (M1, M2) connected for converting a DC voltage source (25) into a DC voltage output (23,24); driving means (PWM1, PWM2) for driving the switching device of each sub-circuit to repeatedly switch on at a time t1 and off at a time t2, with a phase difference between the switch-on times t1 of each switching device; 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 t1 or the switch-off time t2 of said switching device; and 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 t1 to t2, for one or both of the sub-circuits with which the compared input current values are associated, to compensate for said current imbalance.

Andrew John Skinner

JP2012072247A

December 07, 2016

March 27, 2012

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TDK-Lambda UK Limited

H02M3/155

JP2009213239A
JP2010061654A1
JP2011061901A
JP2002010632A

US20070200538

Takeshi Ebe
Inoue Akifumi
Kazuo Asahi

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