Advanced Control for Very Fast DC-DC Converters Based on Hysteresis of the ${C}_{out}$ Current

@article{Huerta2013AdvancedCF,
  title={Advanced Control for Very Fast DC-DC Converters Based on Hysteresis of the \$\{C\}_\{out\}\$  Current},
  author={Santa Concepci{\'o}n Huerta and Andres Soto and Pedro Alou and Jes{\'u}s A. Oliver and {\'O}scar Garc{\'i}a and Jos{\'e} A. Cobos},
  journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
  year={2013},
  volume={60},
  pages={1052-1061}
}
The bandwidth achievable by using voltage mode control or current mode control in switch-mode power supply is limited by the switching frequency. Fast transient response requires high switching frequency, although lower switching frequencies could be more suitable for higher efficiency. This paper proposes the use of hysteretic control of the output capacitor (Cout) current to improve the dynamic response of the buck converter. An external voltage loop is required to accurately regulate the… CONTINUE READING