An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter

Edi Emanovic; Joseph Shor; Drazen Jurisic

doi:10.1109/ESSCIRC53450.2021.9567874

An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter

Edi Emanovic, Joseph Shor, Drazen Jurisic

Bar-Ilan University - The Alexander Kofkin Faculty of Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A fully integrated ultra-low-power step-down DC-DC converter is demonstrated in 65nm. This circuit is useful for converting battery voltage levels (2.5 - 3V) to digital and mixed-signal voltage levels for low-power always-on domains. A down conversion of 5:1 is utilized to provide a near-Vth digital voltage of 0.55-0.6V, while making higher voltages (1.2V, 1.8V) available as well. An inverter-based amplifier is utilized to achieve high speed regulation at low power. Measured results show an Efficiency-Enhancement-Factor (EEF) of 66% and a power density of 2.56 mW/mm2 at an output power of 100W. At this power, these parameters represent the state-of-the-art. The DC-DC converter has a fast transient response which results in operation with minimal droops and overshoots even with output capacitors as low as 50 pF.

Original language	English
Title of host publication	ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	359-362
Number of pages	4
ISBN (Electronic)	9781665437479
DOIs	https://doi.org/10.1109/ESSCIRC53450.2021.9567874
State	Published - 13 Sep 2021
Event	47th IEEE European Solid State Circuits Conference, ESSCIRC 2021 - Virtual, Online, France Duration: 6 Sep 2021 → 9 Sep 2021

Publication series

Name	ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings

Conference

Conference	47th IEEE European Solid State Circuits Conference, ESSCIRC 2021
Country/Territory	France
City	Virtual, Online
Period	6/09/21 → 9/09/21

Bibliographical note

Funding Information:
This work was partly supported by the Croatian Science Foundation under project (IP-2016-06-1307).

Publisher Copyright:
© 2021 IEEE.

Keywords

dc-dc conversion
switched-capacitor
voltage regulator

Access to Document

10.1109/ESSCIRC53450.2021.9567874

Cite this

Emanovic, E., Shor, J., & Jurisic, D. (2021). An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter. In ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings (pp. 359-362). (ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ESSCIRC53450.2021.9567874

Emanovic, Edi ; Shor, Joseph ; Jurisic, Drazen. / An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter. ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. pp. 359-362 (ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings).

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abstract = "A fully integrated ultra-low-power step-down DC-DC converter is demonstrated in 65nm. This circuit is useful for converting battery voltage levels (2.5 - 3V) to digital and mixed-signal voltage levels for low-power always-on domains. A down conversion of 5:1 is utilized to provide a near-Vth digital voltage of 0.55-0.6V, while making higher voltages (1.2V, 1.8V) available as well. An inverter-based amplifier is utilized to achieve high speed regulation at low power. Measured results show an Efficiency-Enhancement-Factor (EEF) of 66% and a power density of 2.56 mW/mm2 at an output power of 100W. At this power, these parameters represent the state-of-the-art. The DC-DC converter has a fast transient response which results in operation with minimal droops and overshoots even with output capacitors as low as 50 pF.",

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Emanovic, E, Shor, J & Jurisic, D 2021, An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter. in ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings. ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings, Institute of Electrical and Electronics Engineers Inc., pp. 359-362, 47th IEEE European Solid State Circuits Conference, ESSCIRC 2021, Virtual, Online, France, 6/09/21. https://doi.org/10.1109/ESSCIRC53450.2021.9567874

An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter. / Emanovic, Edi; Shor, Joseph; Jurisic, Drazen.
ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2021. p. 359-362 (ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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Emanovic E, Shor J, Jurisic D. An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter. In ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2021. p. 359-362. (ESSCIRC 2021 - IEEE 47th European Solid State Circuits Conference, Proceedings). doi: 10.1109/ESSCIRC53450.2021.9567874

An Inverter-Based, Ultra-Low Power, Fully Integrated, Switched-Capacitor DC-DC Buck Converter

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

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Cite this