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...
| Main Authors: | , , |
|---|---|
| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2021
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/152169 |
| _version_ | 1826111048278605824 |
|---|---|
| author | Xiao, Zhekai Bui, Anh Khoa Siek, Liter |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Xiao, Zhekai Bui, Anh Khoa Siek, Liter |
| author_sort | Xiao, Zhekai |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T02:44:33Z |
| format | Conference Paper |
| id | ntu-10356/152169 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:44:33Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-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. |
| 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 |
| title | 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_short | 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 |
| 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 |
| url | https://hdl.handle.net/10356/152169 |
| work_keys_str_mv | AT xiaozhekai aswitchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse AT buianhkhoa aswitchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse AT siekliter aswitchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse AT xiaozhekai switchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse AT buianhkhoa switchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse AT siekliter switchedcapacitordcdcconverterwithembeddedfastnmosldosachievinglownoiselowoutputvoltagerippleandfastresponse |