Digital Average Current Predictive Control for Multiphase Interleaved DC–DC Converters
- 12 July 2023
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems II: Express Briefs
- Vol. 70 (12) , 4519-4523
Abstract
Multiphase interleaved DC-DC converters are widely used in power electronics. However, conventional phase-shedding controls for improving efficiency at light load result in uneven thermal stress among phases. In this brief, the digital average current (DAC) predictive control with load current compensation for multiphase interleaved DC-DC converters is investigated. Taking a three-phase interleaved buck converter as an example, the working principle and load transient performance are analyzed. And a rotating phase-shedding strategy is proposed to distribute switching activities concentrated on a few phases at light load to all phases with the fastest shedding speed and minimized output oscillation. The effectiveness of the proposed method is verified experimentally.Keywords
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