Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application
The Supercapacitor-assisted low-dropout (SCALDO) regulator is a unique new DC-DC converter design approach with high end-to-end efficiency (ETEE), where a supercapacitor is used as a lossless voltage dropper in the series path of a linear regulator. This technique, in which the energy recovery happe...
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8815693/ |
| _version_ | 1818416099834724352 |
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| author | Kasun Subasinghage Kosala Gunawardane Nihal Kularatna Tek Tjing Lie |
| author_facet | Kasun Subasinghage Kosala Gunawardane Nihal Kularatna Tek Tjing Lie |
| author_sort | Kasun Subasinghage |
| collection | DOAJ |
| description | The Supercapacitor-assisted low-dropout (SCALDO) regulator is a unique new DC-DC converter design approach with high end-to-end efficiency (ETEE), where a supercapacitor is used as a lossless voltage dropper in the series path of a linear regulator. This technique, in which the energy recovery happens at a very low frequency (typically in millihertz), with an efficiency multiplication factor in the range of 1.33 to 3, can be used in many different applications. For example, in a 12- 5V linear converter where the theoretical maximum efficiency is 41.67%, the SCALDO approach improves it to 83.33%. The SCALDO technique has been extended to multiple useful applications proving its versatility and has been identified as an entirely different approach compared to conventional switched capacitor converters. In this paper, we provide an in-depth discussion on the expansion of the SCALDO technique into a dual-polarity, split-rail DC power supply with high ETEE, high current, high slew-rate capability and other desirable features. It also presents the experimental results for a 12V to ± 5V prototype with steady-state performance, transient response capability, load/line regulation, and loss estimation. |
| first_indexed | 2024-12-14T11:45:30Z |
| format | Article |
| id | doaj.art-21fb157439a9483988fed07b8248278b |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-14T11:45:30Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-21fb157439a9483988fed07b8248278b2022-12-21T23:02:37ZengIEEEIEEE Access2169-35362019-01-01712403412404710.1109/ACCESS.2019.29377548815693Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter ApplicationKasun Subasinghage0https://orcid.org/0000-0003-3604-0576Kosala Gunawardane1https://orcid.org/0000-0001-5254-0162Nihal Kularatna2Tek Tjing Lie3https://orcid.org/0000-0002-1091-2121Department of Electrical and Electronic Engineering, Auckland University of Technology, Auckland, New ZealandDepartment of Electrical and Electronic Engineering, Auckland University of Technology, Auckland, New ZealandSchool of Engineering, The University of Waikato, Hamilton, New ZealandDepartment of Electrical and Electronic Engineering, Auckland University of Technology, Auckland, New ZealandThe Supercapacitor-assisted low-dropout (SCALDO) regulator is a unique new DC-DC converter design approach with high end-to-end efficiency (ETEE), where a supercapacitor is used as a lossless voltage dropper in the series path of a linear regulator. This technique, in which the energy recovery happens at a very low frequency (typically in millihertz), with an efficiency multiplication factor in the range of 1.33 to 3, can be used in many different applications. For example, in a 12- 5V linear converter where the theoretical maximum efficiency is 41.67%, the SCALDO approach improves it to 83.33%. The SCALDO technique has been extended to multiple useful applications proving its versatility and has been identified as an entirely different approach compared to conventional switched capacitor converters. In this paper, we provide an in-depth discussion on the expansion of the SCALDO technique into a dual-polarity, split-rail DC power supply with high ETEE, high current, high slew-rate capability and other desirable features. It also presents the experimental results for a 12V to ± 5V prototype with steady-state performance, transient response capability, load/line regulation, and loss estimation.https://ieeexplore.ieee.org/document/8815693/DC-DC Converterefficiencylow-dropout regulatorsSCALDO regulatorsplit-rail converterssupercapacitors |
| spellingShingle | Kasun Subasinghage Kosala Gunawardane Nihal Kularatna Tek Tjing Lie Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application IEEE Access DC-DC Converter efficiency low-dropout regulators SCALDO regulator split-rail converters supercapacitors |
| title | Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application |
| title_full | Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application |
| title_fullStr | Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application |
| title_full_unstemmed | Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application |
| title_short | Extending the Supercapacitor-Assisted Low-Dropout Regulator (SCALDO) Technique to a Split-Rail DC–DC Converter Application |
| title_sort | extending the supercapacitor assisted low dropout regulator scaldo technique to a split rail dc x2013 dc converter application |
| topic | DC-DC Converter efficiency low-dropout regulators SCALDO regulator split-rail converters supercapacitors |
| url | https://ieeexplore.ieee.org/document/8815693/ |
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