A Capacitorless LDO Regulator With Fast Feedback Technique and Low-Quiescent Current Error Amplifier
- Title
- A Capacitorless LDO Regulator With Fast Feedback Technique and Low-Quiescent Current Error Amplifier
- Author
- 이상선
- Keywords
- Capacitive coupling; capacitorless low dropout (LDO); operational transconductance amplifier (OTA)
- Issue Date
- 2013-06
- Publisher
- IEEE
- Citation
- IEEE Transactions on Circuits and Systems II-Express Briefs, 60(6), p.326-330
- Abstract
- This brief presents an ultralow quiescent class-AB error amplifier (ERR AMP) of low dropout (LDO) and a slew-rate (SR) enhancement circuit to minimize compensation capacitance and speed up transient response designed in the 0.11-mu m 1-poly 6-metal CMOS process. In order to increase the current capability with a low standby quiescent current under large-signal operation, the proposed scheme has a class-AB-operation operational transconductance amplifier (OTA) that acts as an ERR AMP. As a result, the new OTA achieved a higher dc gain and faster settling time than conventional OTAs, demonstrating a dc gain improvement of 15.8 dB and a settling time six times faster than that of a conventional OTA. The proposed additional SR enhancement circuit improved the response based on voltage-spike detection when the voltage dramatically changed at the output node.
- URI
- https://ieeexplore.ieee.org/document/6511988/https://repository.hanyang.ac.kr/handle/20.500.11754/73122
- ISSN
- 1057-7130; 1549-7747
- DOI
- 10.1109/TCSII.2013.2258250
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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