High-Frequency Dynamic Current Sharing Analyses for Multiphase Buck VRs

  title={High-Frequency Dynamic Current Sharing Analyses for Multiphase Buck VRs},
  author={J. Sun and Y. Qiu and M. Xu and F. Lee},
  journal={IEEE Transactions on Power Electronics},
  • J. Sun, Y. Qiu, +1 author F. Lee
  • Published 2007
  • Engineering
  • IEEE Transactions on Power Electronics
  • 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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