TY - GEN
T1 - A 88%-Peak-Efficiency 10-mV-Voltage-Ripple Dual-Mode Switched-Capacitor DC-DC Converter for Ultra-Low-Power Battery Management
AU - Wu, Xiaoyuan
AU - Xiao, Yao
AU - Zhang, Zitong
AU - Huang, Leilei
AU - Liu, Boxiao
AU - Shi, Chunqi
AU - Chen, Jinghong
AU - Zhang, Runxi
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - This paper proposes a high-efficiency low-ripple dual-mode switched-capacitor (SC) DC-DC converter for low-power IoT and wearable device applications. A hybrid self-biased current scheme (HSBC) is developed to achieve low output voltage ripple and fast response. Two supply voltage domains of HSBC and clock drive controller circuit are introduced to reduce the power loss of the control circuit. An on-chip ultra-low-power bias circuit is also designed to minimize the power loss of the bias generator. The proposed DC-DC converter is implemented in a 40 nm CMOS process. Post-layout simulation results show that the converter realizes 1.6-1.8 V to 0.4 V conversion. The peak efficiency is up to 88% at 5μA, and the voltage ripple is less than 10 mV over a load range of 10 nA-10μA. The response time of the converter is less than 15μs.
AB - This paper proposes a high-efficiency low-ripple dual-mode switched-capacitor (SC) DC-DC converter for low-power IoT and wearable device applications. A hybrid self-biased current scheme (HSBC) is developed to achieve low output voltage ripple and fast response. Two supply voltage domains of HSBC and clock drive controller circuit are introduced to reduce the power loss of the control circuit. An on-chip ultra-low-power bias circuit is also designed to minimize the power loss of the bias generator. The proposed DC-DC converter is implemented in a 40 nm CMOS process. Post-layout simulation results show that the converter realizes 1.6-1.8 V to 0.4 V conversion. The peak efficiency is up to 88% at 5μA, and the voltage ripple is less than 10 mV over a load range of 10 nA-10μA. The response time of the converter is less than 15μs.
KW - low-power battery management
KW - pulse-frequency modulation
KW - switched-capacitor DC-DC converter
UR - https://www.scopus.com/pages/publications/85167702268
U2 - 10.1109/ISCAS46773.2023.10182121
DO - 10.1109/ISCAS46773.2023.10182121
M3 - 会议稿件
AN - SCOPUS:85167702268
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - ISCAS 2023 - 56th IEEE International Symposium on Circuits and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 56th IEEE International Symposium on Circuits and Systems, ISCAS 2023
Y2 - 21 May 2023 through 25 May 2023
ER -