A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response

This paper presents a 2/3 step-down switched-capacitor DC-DC converter with integrated NMOS-LDOs in both charging and discharging phases to suppress the output voltage ripple. A gate driving technique implementing adaptive gate slope and gate pre-charge is proposed to reduce the switching noise duri...

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Main Authors: Xiao, Zhekai, Bui, Anh Khoa, Siek, Liter
Other Authors: School of Electrical and Electronic Engineering
Format: Conference or Workshop Item
Language:English
Published: 2021
Subjects:
Online Access:https://hdl.handle.net/10356/152169
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1521692021-08-05T00:26:14Z A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response Xiao, Zhekai Bui, Anh Khoa Siek, Liter School of Electrical and Electronic Engineering 2016 International Symposium on Integrated Circuits (ISIC) VIRTUS, IC Design Centre of Excellence Engineering::Electrical and electronic engineering Switched-capacitor DC-DC Converter Embedded Fast NMOS-LDO Low Noise Voltage Ripple Low Output Voltage Ripple Gate Driving Technique Adaptive Gate Slope Gate Pre-charge Fast Transient Response This paper presents a 2/3 step-down switched-capacitor DC-DC converter with integrated NMOS-LDOs in both charging and discharging phases to suppress the output voltage ripple. A gate driving technique implementing adaptive gate slope and gate pre-charge is proposed to reduce the switching noise during phase transitions and assist the turn-on of the regulation transistors, respectively. Good load regulation and fast transient response are achieved due to the high open loop gain and bandwidth. Simulation results show that the output voltage ripple is less than 0.5 mV when delivering 100 mA output current. The converter achieves peak efficiency of 83.3% and over 80% across a load current range of 5 mA to 130 mA. 2021-08-05T00:24:52Z 2021-08-05T00:24:52Z 2017 Conference Paper Xiao, Z., Bui, A. K. & Siek, L. (2017). A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response. 2016 International Symposium on Integrated Circuits (ISIC), 1-4. https://dx.doi.org/10.1109/ISICIR.2016.7829698 9781467390194 https://hdl.handle.net/10356/152169 10.1109/ISICIR.2016.7829698 2-s2.0-85013772606 1 4 en © 2016 IEEE. All rights reserved.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Electrical and electronic engineering
Switched-capacitor DC-DC Converter
Embedded Fast NMOS-LDO
Low Noise Voltage Ripple
Low Output Voltage Ripple
Gate Driving Technique
Adaptive Gate Slope
Gate Pre-charge
Fast Transient Response
spellingShingle Engineering::Electrical and electronic engineering
Switched-capacitor DC-DC Converter
Embedded Fast NMOS-LDO
Low Noise Voltage Ripple
Low Output Voltage Ripple
Gate Driving Technique
Adaptive Gate Slope
Gate Pre-charge
Fast Transient Response
Xiao, Zhekai
Bui, Anh Khoa
Siek, Liter
A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
description This paper presents a 2/3 step-down switched-capacitor DC-DC converter with integrated NMOS-LDOs in both charging and discharging phases to suppress the output voltage ripple. A gate driving technique implementing adaptive gate slope and gate pre-charge is proposed to reduce the switching noise during phase transitions and assist the turn-on of the regulation transistors, respectively. Good load regulation and fast transient response are achieved due to the high open loop gain and bandwidth. Simulation results show that the output voltage ripple is less than 0.5 mV when delivering 100 mA output current. The converter achieves peak efficiency of 83.3% and over 80% across a load current range of 5 mA to 130 mA.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Xiao, Zhekai
Bui, Anh Khoa
Siek, Liter
format Conference or Workshop Item
author Xiao, Zhekai
Bui, Anh Khoa
Siek, Liter
author_sort Xiao, Zhekai
title A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
title_short A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
title_full A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
title_fullStr A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
title_full_unstemmed A switched-capacitor DC-DC converter with embedded fast NMOS-LDOs achieving low noise, low output voltage ripple and fast response
title_sort switched-capacitor dc-dc converter with embedded fast nmos-ldos achieving low noise, low output voltage ripple and fast response
publishDate 2021
url https://hdl.handle.net/10356/152169
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