Abstract
This paper presents the design of low-dropout (LDO) regulator optimized on power efficiency and load transient response. As the LDO is always-on block, the quiescent current is a critical parameter of LDO. The proposed circuit includes an op-amp which shows high slew rate with low quiescent current. A voltage damper circuit is included for fast load transient response. A body feedback loop helps the LDO regulator to react to relatively slow distortion of the output voltage. The proposed LDO regulator is fabricated in a 180 nm CMOS process. The test results show that maximum undershoot is 125.9 mV during load transient and 0.177 ns/\mu m figure-of-merit (FOM) at the quiescent current of 0.02532 mA.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Symposium on Circuits and Systems, ISCAS 2022 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 3571-3574 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781665484855 |
| DOIs | |
| Publication status | Published - 2022 |
| Event | 2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022 - Austin, United States Duration: 2022 May 27 → 2022 Jun 1 |
Publication series
| Name | Proceedings - IEEE International Symposium on Circuits and Systems |
|---|---|
| Volume | 2022-May |
| ISSN (Print) | 0271-4310 |
Conference
| Conference | 2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022 |
|---|---|
| Country/Territory | United States |
| City | Austin |
| Period | 22/5/27 → 22/6/1 |
Bibliographical note
Funding Information:This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education under Grant number NRF-2021R1A2C2014652 and NRF-2016R1D1A1B04935233.
Publisher Copyright:
© 2022 IEEE.
Keywords
- body feedback loop
- fast load transient
- LDO regulator
- power efficiency
- quiescent current
- voltage damper
ASJC Scopus subject areas
- Electrical and Electronic Engineering