A 200mA digital low-drop-out regulator with coarse-fine dual loop in mobile application processors

Yong Jin Lee, Min Yong Jung, Shashank Singh, Tae Hwang Kong, Dae Yong Kim, Kwang Ho Kim, Sang Ho Kim, Jae Jin Park, Ho Jin Park, Gyu Hyeong Cho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

30 Scopus citations

Abstract

A modern mobile application processor (AP) requires a variety of power voltage levels, which increases the number of external capacitors around the mobile AP. This is because the supply PCB routes from the power management IC (PMIC) to the AP have parasitic inductors. The parasitic inductors introduce ripples on power voltage lines. Therefore, external capacitors are required on the PCB routes between the PMIC and the mobile AP. To reduce the number of external capacitors, one power voltage level from the PMIC is converted into a variety of power voltage levels inside the mobile AP. This both reduces external capacitors as well as the number of power pins on the mobile AP and simplifies PCB routes. For such reasons, integrated low-dropout regulators (LDOs) are preferred in mobile APs.

Original languageEnglish
Title of host publication2016 IEEE International Solid-State Circuits Conference, ISSCC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages150-151
Number of pages2
ISBN (Electronic)9781467394666
DOIs
StatePublished - Feb 23 2016
Externally publishedYes
Event63rd IEEE International Solid-State Circuits Conference, ISSCC 2016 - San Francisco, United States
Duration: Jan 31 2016Feb 4 2016

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume59
ISSN (Print)0193-6530

Conference

Conference63rd IEEE International Solid-State Circuits Conference, ISSCC 2016
Country/TerritoryUnited States
CitySan Francisco
Period01/31/1602/4/16

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