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Dual-summed flipped voltage follower LDO regulator with active feed-forward compensation
Published in Elsevier GmbH
Volume: 123
In this paper, an internally compensated dual-summed flipped voltage follower (FVF) low drop-out (LDO) regulator is proposed. This LDO uses a small miller capacitance (MC) and an active feed-forward compensation (AFFC) to internally stabilize the feedback loop. The active feed-forward compensator shifts an RHP zero of the miller capacitance to the load-dependent LHP zero. A simple RC high-pass filter enhances the overshoot transient response of the LDO and stabilizes the feedback loop further with increased phase margin. This LDO achieves settling time of 110ns during overshoot and 32ns during undershoot with edge time of 25ns. © 2020 Elsevier GmbH
About the journal
JournalData powered by TypesetAEU - International Journal of Electronics and Communications
PublisherData powered by TypesetElsevier GmbH