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http://dx.doi.org/10.7471/ikeee.2018.22.2.384

Multiple-Output Low Drop-Out Regulator With Constant Feedback Factor  

Mo, Hyunsun (School of Electrical Engineering, Kookmin University)
Kim, Daejeong (School of Electrical Engineering, Kookmin University)
Publication Information
Journal of IKEEE / v.22, no.2, 2018 , pp. 384-392 More about this Journal
Abstract
A multiple-output LDO regulator is a good choice in terms of the efficiency in embedded systems requiring various supply voltages. A small feedback factor in LDO incurs the long settling time, resulting in large ripples in the time-multiplexing strategy. A new proposed topology enhances the settling time, and hence the ripples by incorporating the constant feedback factor with different reference voltages. The simulation results of a prototype design in a standard $0.35{\mu}m$ CMOS process verify that the proposed strategy enhances the settling time and ripple characteristic by more than doubled than a conventional circuit using the feedback factor of less than 0.4.
Keywords
Low Drop-out Regulator; Multiple-output; Feedback factor; Settling-time; LDO;
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