Residential College | false |
Status | 已發表Published |
A Fully Integrated FVF-Based Low-Dropout Regulator with Wide Load Capacitance and Current Ranges | |
Huang,Mo1; Feng,Haigang2; Lu,Yan3 | |
2019-12 | |
Source Publication | IEEE Transactions on Power Electronics |
ISSN | 0885-8993 |
Volume | 34Issue:12Pages:11880-11888 |
Abstract | The flipped-voltage-follower-based low-dropout regulator (LDO) has drawn attention for its fast response and reduced complexity, while super source follower can be combined to push the pole at the gate of the pass device to high frequency. But the maximum load current and minimum load capacitance of this topology are limited, especially when the poles and zero from the SSF are omitted in previous designs. This paper proposes a solution to extend the ranges of the load current and load capacitance, by implementing a small feed-forward capacitor ($C_{F}$) and a damping factor control circuitry. In addition, a slew rate enhancement circuit is applied to reduce the voltage undershoot. The proposed LDO is verified in a 65-nm CMOS process with 0.008 mm active area. The measured voltage undershoot is 80 mV with a load steps from 100 μA to 50 mA with 2-ns edge times, with no external capacitor. And the maximum load capacitance can be extended to 2 nF. A figure-of-merit of 0.8 mV is achieved. |
Keyword | Amplifier Damping Factor Control (Dfc) Feed-forward Flipped Voltage Follower (Fvf) Low-dropout Regulator (Ldo) Output Capacitorless (Ocl) Slew Rate Enhancement (Sre) Super Source Follower (Ssf) |
DOI | 10.1109/TPEL.2019.2904622 |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Engineering |
WOS Subject | Engineering, Electrical & Electronic |
WOS ID | WOS:000485747300030 |
Scopus ID | 2-s2.0-85072290266 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | INSTITUTE OF MICROELECTRONICS |
Corresponding Author | Lu,Yan |
Affiliation | 1.School of Electronic and Information Engineering,South China University of Technology,Guangzhou,510630,China 2.Graduate School at Shenzhen,Tsinghua University,Shenzhen,518055,China 3.State Key Laboratory of Analog and Mixed-Signal VLSI,University of Macau,Taipa,Macao |
Corresponding Author Affilication | University of Macau |
Recommended Citation GB/T 7714 | Huang,Mo,Feng,Haigang,Lu,Yan. A Fully Integrated FVF-Based Low-Dropout Regulator with Wide Load Capacitance and Current Ranges[J]. IEEE Transactions on Power Electronics, 2019, 34(12), 11880-11888. |
APA | Huang,Mo., Feng,Haigang., & Lu,Yan (2019). A Fully Integrated FVF-Based Low-Dropout Regulator with Wide Load Capacitance and Current Ranges. IEEE Transactions on Power Electronics, 34(12), 11880-11888. |
MLA | Huang,Mo,et al."A Fully Integrated FVF-Based Low-Dropout Regulator with Wide Load Capacitance and Current Ranges".IEEE Transactions on Power Electronics 34.12(2019):11880-11888. |
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