RT Journal Article
T1 Peak detector effect in low-dropout regulators
A1 Palomar Trives, Carlos
A1 Franco Peláez, Francisco Javier
A1 López Calle, Isabel
A1 González Izquierdo, Jesús
A1 Agapito Serrano, Juan Andrés
AB The peak detector effect is a phenomenon that makes single event transients much longer once an error amplifier switches from linear to saturation zone due to the presence of external capacitors. This is so-called since it was discovered in a simple voltage reference in which a parasitic lossy peak detector was unwillingly built in the output stage. In this paper, peak detector effect is generalized to explain the appearance of long duration pulses in typical low dropout voltage regulator built with discrete devices. This effect has been related to the way in which the negative feedback loop is closed and to the kind of pass device in the output stage. Thus, if the linear voltage regulator consists in an error amplifier the output of which controls a current source, the peak detector effect will occur if the current source is unidirectional, the output load does not drain enough current and is in parallel with an external capacitor.
PB IEEE-Inst Electrical Electronics Engineers Inc
SN 0018-9499
YR 2013
FD 2013-08
LK https://hdl.handle.net/20.500.14352/33822
UL https://hdl.handle.net/20.500.14352/33822
LA spa
NO (c) 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works
NO Ministerio de Ciencia e Innovación
NO Universidad Complutense de Madrid
NO Banco Santander - Central Hispano
DS Docta Complutense
RD 13 abr 2025