High-Frequency Dynamic Current Sharing Analyses for Multiphase Buck VRs

@article{Sun2007HighFrequencyDC,
  title={High-Frequency Dynamic Current Sharing Analyses for Multiphase Buck VRs},
  author={Juanjuan Sun and Yang Qiu and Ming Xu and F. C. Lee},
  journal={IEEE Transactions on Power Electronics},
  year={2007},
  volume={22},
  pages={2424-2431}
}
Under high-frequency repetitive load transients, multiphase voltage regulators suffer from beat-frequency oscillations of the phase currents. To investigate this issue, this paper develops a methodology based on the multifrequency model with describing functions. The phenomenon of beat-frequency oscillation in phase currents is explained. The influences from the interleaving operation are identified. Using peak-current control as an example, the magnitude of beat-frequency oscillations is… CONTINUE READING
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