TY - GEN
T1 - A Single-Inductor Dual-Output DC-DC Converter with Dual-Mode Control
AU - Hsu, Yun Hsuan
AU - Yao, Dao Han
AU - Chen, Po-Hung
N1 - Publisher Copyright:
© 2020 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6
Y1 - 2020/6
N2 - This paper demonstrates a single-inductor dual-output (SIDO) buck converter, which is developed for implantable medical devices. The dual-mode operation, which combines pulse-skip modulation (PSM) and pulse-width modulation (PWM), is employed to regulate outputs under light load and heavy load conditions, respectively. The converter provides two output voltages: VOUT1 (2.5-3V) for charge pumps and VOUT2 (2V) for digital circuits. With the start-up circuits, the SIDO buck converter can act as self-start-up DC-DC buck converter. To avoid voltage stress issue under 3.2-4.2V battery operation in 180nm standard (CMOS) process, the stacked power stage is used. The proposed level shifter includes an additional level restorer to avoid a misjudgment issue during start-up period. The simulation results demonstrate that the converter achieves peak efficiency of 94.5% with PSM control, and it achieves peak efficiency of 89.1% with PWM control.
AB - This paper demonstrates a single-inductor dual-output (SIDO) buck converter, which is developed for implantable medical devices. The dual-mode operation, which combines pulse-skip modulation (PSM) and pulse-width modulation (PWM), is employed to regulate outputs under light load and heavy load conditions, respectively. The converter provides two output voltages: VOUT1 (2.5-3V) for charge pumps and VOUT2 (2V) for digital circuits. With the start-up circuits, the SIDO buck converter can act as self-start-up DC-DC buck converter. To avoid voltage stress issue under 3.2-4.2V battery operation in 180nm standard (CMOS) process, the stacked power stage is used. The proposed level shifter includes an additional level restorer to avoid a misjudgment issue during start-up period. The simulation results demonstrate that the converter achieves peak efficiency of 94.5% with PSM control, and it achieves peak efficiency of 89.1% with PWM control.
KW - adaptive on-time
KW - buck converter
KW - low-dropout regulator (LDO)
KW - pulse-skip modulation (PSM)
KW - pulse-width modulation (PWM)
UR - http://www.scopus.com/inward/record.url?scp=85091899192&partnerID=8YFLogxK
U2 - 10.1109/ICECCE49384.2020.9179190
DO - 10.1109/ICECCE49384.2020.9179190
M3 - Conference contribution
AN - SCOPUS:85091899192
T3 - 2nd International Conference on Electrical, Communication and Computer Engineering, ICECCE 2020
BT - 2nd International Conference on Electrical, Communication and Computer Engineering, ICECCE 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd International Conference on Electrical, Communication and Computer Engineering, ICECCE 2020
Y2 - 12 June 2020 through 13 June 2020
ER -