A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit
An output-capacitorless low-dropout regulator (LDO) with a push–pull buffer was presented in this paper. The proposed push–pull buffer was able to provide a large charge and discharge current to increase the slew rate at the gate of the power transistor effectively, thereby improving the transient r...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/6/1285 |
| _version_ | 1797612296601600000 |
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| author | Yuanzhe Li Lixin Wang Yue Wang Shixin Wang Mengyao Cui Min Guo |
| author_facet | Yuanzhe Li Lixin Wang Yue Wang Shixin Wang Mengyao Cui Min Guo |
| author_sort | Yuanzhe Li |
| collection | DOAJ |
| description | An output-capacitorless low-dropout regulator (LDO) with a push–pull buffer was presented in this paper. The proposed push–pull buffer was able to provide a large charge and discharge current to increase the slew rate at the gate of the power transistor effectively, thereby improving the transient response of this LDO. In addition, an adaptive resistance unit (ARU) was proposed to solve the right half-plane zero problem caused by Miller compensation to optimize the loop stability of the LDO. The proposed LDO was implemented in a 0.18-µm CMOS technology. Simulation results showed that the quiescent current of this LDO was only 16.1 µA. It regulated the output at 1.5 V from a 1.8 V supply, with a dropout voltage of 300 mV at the maximum output current of 50 mA. The maximum value of the voltage spike was 129 mV. Additionally, the recovery time of the LDO was 0.2 µs. |
| first_indexed | 2024-03-11T06:39:18Z |
| format | Article |
| id | doaj.art-d79f8a76090c4c30bc69a1ad30dba431 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-11T06:39:18Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-d79f8a76090c4c30bc69a1ad30dba4312023-11-17T10:43:23ZengMDPI AGElectronics2079-92922023-03-01126128510.3390/electronics12061285A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance UnitYuanzhe Li0Lixin Wang1Yue Wang2Shixin Wang3Mengyao Cui4Min Guo5Institute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Microelectronics of the Chinese Academy of Sciences, Beijing 100029, ChinaAn output-capacitorless low-dropout regulator (LDO) with a push–pull buffer was presented in this paper. The proposed push–pull buffer was able to provide a large charge and discharge current to increase the slew rate at the gate of the power transistor effectively, thereby improving the transient response of this LDO. In addition, an adaptive resistance unit (ARU) was proposed to solve the right half-plane zero problem caused by Miller compensation to optimize the loop stability of the LDO. The proposed LDO was implemented in a 0.18-µm CMOS technology. Simulation results showed that the quiescent current of this LDO was only 16.1 µA. It regulated the output at 1.5 V from a 1.8 V supply, with a dropout voltage of 300 mV at the maximum output current of 50 mA. The maximum value of the voltage spike was 129 mV. Additionally, the recovery time of the LDO was 0.2 µs.https://www.mdpi.com/2079-9292/12/6/1285output-capacitorless low-dropout regulator (OCL-LDO)fast transientlow quiescentpush–pull |
| spellingShingle | Yuanzhe Li Lixin Wang Yue Wang Shixin Wang Mengyao Cui Min Guo A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit Electronics output-capacitorless low-dropout regulator (OCL-LDO) fast transient low quiescent push–pull |
| title | A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit |
| title_full | A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit |
| title_fullStr | A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit |
| title_full_unstemmed | A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit |
| title_short | A Low-Power, Fast-Transient FVF-Based Output-Capacitorless LDO with Push–Pull Buffer and Adaptive Resistance Unit |
| title_sort | low power fast transient fvf based output capacitorless ldo with push pull buffer and adaptive resistance unit |
| topic | output-capacitorless low-dropout regulator (OCL-LDO) fast transient low quiescent push–pull |
| url | https://www.mdpi.com/2079-9292/12/6/1285 |
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