Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator for System-on-Chips

@article{Zhan2010OutputCapacitorFreeAB,
  title={Output-Capacitor-Free Adaptively Biased Low-Dropout Regulator for System-on-Chips},
  author={Chenchang Zhan and Wing-Hung Ki},
  journal={IEEE Transactions on Circuits and Systems I: Regular Papers},
  year={2010},
  volume={57},
  pages={1017-1028}
}
A high-precision low-voltage adaptively biased (AB) low-dropout regulator (LDR) with extended loop bandwidth is proposed. The multistage output-capacitor-free LDR is stabilized by Miller compensation and Q-reduction techniques to reduce the required minimum load current. Adaptive biasing is achieved by using direct current feedback from a simple current mirror. The dynamics of both the main feedback loop (MFL) and the adaptive biasing loop are thoroughly analyzed. Tradeoffs between the adaptive… CONTINUE READING
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