Fast transient capacitor-less LDO regulator using low-power output voltage detector
- Title
- Fast transient capacitor-less LDO regulator using low-power output voltage detector
- Author
- 이상선
- Keywords
- LOW-DROPOUT REGULATOR; BUFFER
- Issue Date
- 2012-02
- Publisher
- INST Engineering Technology - IET
- Citation
- Electronics Letters, Feb 2012, 48(3), P.163-U60
- Abstract
- An output-capacitor-less low-dropout regulator (LDO) with a low-power output voltage detector (OVD) is proposed. The OVD is based on an R/C highpass filter which is able to detect the fast-changing voltage at the LDO output and activate an additional path to control the power transistor. The OVD consumes only additional quiescent current to monitor the variation in output voltage in the steady state. In the simulated load-transient response, a maximum undershoot of 1.2 V and a settling time (Delta t(2)) of 67 ns are observed with the proposed OVD for a load current variation from 1 to 50 mA at a rise time of 1 ns. These results are 0.2 V and 473 ns better than the results obtained without the proposed OVD.
- URI
- https://ieeexplore.ieee.org/document/6145831/
- ISSN
- 0013-5194
- DOI
- 10.1049/el.2011.3671
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
- Files in This Item:
There are no files associated with this item.
- Export
- RIS (EndNote)
- XLS (Excel)
- XML