Current balancing control for an interleaved boost power converter

ABSTRACT

The interleaved boost power converter has the advantages of ripple cancellation and better efficiency. The major problem of the interleaved boost power converter is the current balancing among different phases of the boost power converters. In this paper, a current balancing control method for equalizing the currents of two-phase interleaved boost power converter is proposed. The output current can effectively detect the mismatch between the boost power converters for the interleaved boost power converter. The output current is used to perform both the current balance and the current-mode control. The salient feature is that only one current sensor is used in the proposed current balancing control method. A hardware prototype is developed, and the experimental results verify the performance of the proposed current balancing control method is as expected.

KEYWORDS:

• Boost power converter
• interleaved
• current balancing

Acknowledgments

The authors would like to express their gratitude to ABLEREX Electronics Co. Ltd. for its financial support for this paper.

Disclosure statement

No potential conflict of interest was reported by the authors.