A Multipath Output-Capacitor-Less LDO Regulator
A multipath output-capacitor-less low-dropout (OCL-LDO) regulator with feedforward path compensation is presented to achieve low power consumption and fast transient response. The proposed OCL-LDO does not require output capacitance and remains stable at no-load(under 100nA) condition. The proposed...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9729870/ |
| _version_ | 1830416633424773120 |
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| author | Shao-Ku Kao Jian-Jiun Chen Chien-Hung Liao |
| author_facet | Shao-Ku Kao Jian-Jiun Chen Chien-Hung Liao |
| author_sort | Shao-Ku Kao |
| collection | DOAJ |
| description | A multipath output-capacitor-less low-dropout (OCL-LDO) regulator with feedforward path compensation is presented to achieve low power consumption and fast transient response. The proposed OCL-LDO does not require output capacitance and remains stable at no-load(under 100nA) condition. The proposed OCL-LDO regulator has been implemented and fabricated in a <inline-formula> <tex-math notation="LaTeX">$0.18\mu \text{m}$ </tex-math></inline-formula> CMOS process, it occupies an active area of 0.0128mm<sup>2</sup>. The proposed circuit consumes a quiescent current of <inline-formula> <tex-math notation="LaTeX">$0.6\mu \text{A}$ </tex-math></inline-formula> at no load and <inline-formula> <tex-math notation="LaTeX">$6.9\mu \text{A}$ </tex-math></inline-formula> at the maximum current load current. Regulating the output at 1V from a voltage supply of 1.2V. It achieves full range stability from 100nA to 100mA, and 100pF is the maximum tolerable parasitic capacitance at output. The measurement results show that the load current rises from 0 to 100mA in 100ns, the undershoot voltage is 388mV, and the settling time is <inline-formula> <tex-math notation="LaTeX">$2.2\mu \text{s}$ </tex-math></inline-formula>. |
| first_indexed | 2024-12-20T21:27:37Z |
| format | Article |
| id | doaj.art-c5eddd5b39224370aaa2f4c1115b78fe |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-20T21:27:37Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-c5eddd5b39224370aaa2f4c1115b78fe2022-12-21T19:26:08ZengIEEEIEEE Access2169-35362022-01-0110271852719610.1109/ACCESS.2022.31577179729870A Multipath Output-Capacitor-Less LDO RegulatorShao-Ku Kao0https://orcid.org/0000-0002-8296-7658Jian-Jiun Chen1https://orcid.org/0000-0002-1359-6339Chien-Hung Liao2Department of Electrical Engineering and the Green Technology Research Center, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, Taoyuan, TaiwanDepartment of Electrical Engineering and the Green Technology Research Center, School of Electrical and Computer Engineering, College of Engineering, Chang Gung University, Taoyuan, TaiwanDepartment of Trauma and Emergency Surgery, Linkou Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, TaiwanA multipath output-capacitor-less low-dropout (OCL-LDO) regulator with feedforward path compensation is presented to achieve low power consumption and fast transient response. The proposed OCL-LDO does not require output capacitance and remains stable at no-load(under 100nA) condition. The proposed OCL-LDO regulator has been implemented and fabricated in a <inline-formula> <tex-math notation="LaTeX">$0.18\mu \text{m}$ </tex-math></inline-formula> CMOS process, it occupies an active area of 0.0128mm<sup>2</sup>. The proposed circuit consumes a quiescent current of <inline-formula> <tex-math notation="LaTeX">$0.6\mu \text{A}$ </tex-math></inline-formula> at no load and <inline-formula> <tex-math notation="LaTeX">$6.9\mu \text{A}$ </tex-math></inline-formula> at the maximum current load current. Regulating the output at 1V from a voltage supply of 1.2V. It achieves full range stability from 100nA to 100mA, and 100pF is the maximum tolerable parasitic capacitance at output. The measurement results show that the load current rises from 0 to 100mA in 100ns, the undershoot voltage is 388mV, and the settling time is <inline-formula> <tex-math notation="LaTeX">$2.2\mu \text{s}$ </tex-math></inline-formula>.https://ieeexplore.ieee.org/document/9729870/Capacitor-less LDOmultipath LDOfrequencycompensationfeedforward path |
| spellingShingle | Shao-Ku Kao Jian-Jiun Chen Chien-Hung Liao A Multipath Output-Capacitor-Less LDO Regulator IEEE Access Capacitor-less LDO multipath LDO frequency compensation feedforward path |
| title | A Multipath Output-Capacitor-Less LDO Regulator |
| title_full | A Multipath Output-Capacitor-Less LDO Regulator |
| title_fullStr | A Multipath Output-Capacitor-Less LDO Regulator |
| title_full_unstemmed | A Multipath Output-Capacitor-Less LDO Regulator |
| title_short | A Multipath Output-Capacitor-Less LDO Regulator |
| title_sort | multipath output capacitor less ldo regulator |
| topic | Capacitor-less LDO multipath LDO frequency compensation feedforward path |
| url | https://ieeexplore.ieee.org/document/9729870/ |
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