Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control

Jeppe Gaardsted Davidsen; Yoni Yosef-Hay; Dennis Øland Larsen; Ivan Harald Holger Jørgensen

doi:10.1109/NORCHIP.2017.8124994

Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control

Jeppe Gaardsted Davidsen, Yoni Yosef-Hay, Dennis Øland Larsen, Ivan Harald Holger Jørgensen

Technical University of Denmark

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

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Abstract

This paper discusses a methodology of minimizing the amount of switches in a multi-topology fully integrated switched capacitor dc-dc converter powered by a super capacitor for energy harvesting purposes. The design of a simple controlling circuit for the multi-topology power stage using a gearbox approach is presented with all the required circuits. The converter is able to generate a output voltage of 1.2 V from a 470 mF capacitor charged to 3 V down to 1.4 V. The output voltage is regulated with a ripple voltage below 7 mV. The controlling circuit including buffers with ideal comparators has a power consumption of 129 μW, the average efficiency is 67% and the peak efficiency of the converter is 81%.

Original language	English
Title of host publication	Proceedings of Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), 2017 IEEE
Number of pages	6
Publisher	IEEE
Publication date	2017
Pages	1-6
ISBN (Print)	978-1-5386-2844-7
DOIs	https://doi.org/10.1109/NORCHIP.2017.8124994
Publication status	Published - 2017
Event	2017 IEEE Nordic Circuits and Systems Conference - Linköping Konsert & Kongress, Linköping, Sweden Duration: 23 Oct 2017 → 25 Oct 2017 https://ieeexplore.ieee.org/xpl/conhome/8119342/proceeding

Conference

Conference	2017 IEEE Nordic Circuits and Systems Conference
Location	Linköping Konsert & Kongress
Country/Territory	Sweden
City	Linköping
Period	23/10/2017 → 25/10/2017
Internet address	https://ieeexplore.ieee.org/xpl/conhome/8119342/proceeding

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Switched Capacitor Paper v2Accepted author manuscript, 834 KB

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Davidsen, J. G., Yosef-Hay, Y., Larsen, D. Ø., & Jørgensen, I. H. H. (2017). Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control. In Proceedings of Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), 2017 IEEE (pp. 1-6). IEEE. https://doi.org/10.1109/NORCHIP.2017.8124994

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title = "Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control",

abstract = "This paper discusses a methodology of minimizing the amount of switches in a multi-topology fully integrated switched capacitor dc-dc converter powered by a super capacitor for energy harvesting purposes. The design of a simple controlling circuit for the multi-topology power stage using a gearbox approach is presented with all the required circuits. The converter is able to generate a output voltage of 1.2 V from a 470 mF capacitor charged to 3 V down to 1.4 V. The output voltage is regulated with a ripple voltage below 7 mV. The controlling circuit including buffers with ideal comparators has a power consumption of 129 μW, the average efficiency is 67% and the peak efficiency of the converter is 81%.",

author = "Davidsen, {Jeppe Gaardsted} and Yoni Yosef-Hay and Larsen, {Dennis {\O}land} and J{\o}rgensen, {Ivan Harald Holger}",

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language = "English",

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booktitle = "Proceedings of Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), 2017 IEEE",

publisher = "IEEE",

address = "United States",

note = "2017 IEEE Nordic Circuits and Systems Conference, NORCAS 2017 ; Conference date: 23-10-2017 Through 25-10-2017",

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Davidsen, JG, Yosef-Hay, Y, Larsen, DØ & Jørgensen, IHH 2017, Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control. in Proceedings of Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), 2017 IEEE. IEEE, pp. 1-6, 2017 IEEE Nordic Circuits and Systems Conference, Linköping, Sweden, 23/10/2017. https://doi.org/10.1109/NORCHIP.2017.8124994

Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control. / Davidsen, Jeppe Gaardsted; Yosef-Hay, Yoni; Larsen, Dennis Øland et al.
Proceedings of Nordic Circuits and Systems Conference (NORCAS): NORCHIP and International Symposium of System-on-Chip (SoC), 2017 IEEE. IEEE, 2017. p. 1-6.

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

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AU - Jørgensen, Ivan Harald Holger

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AB - This paper discusses a methodology of minimizing the amount of switches in a multi-topology fully integrated switched capacitor dc-dc converter powered by a super capacitor for energy harvesting purposes. The design of a simple controlling circuit for the multi-topology power stage using a gearbox approach is presented with all the required circuits. The converter is able to generate a output voltage of 1.2 V from a 470 mF capacitor charged to 3 V down to 1.4 V. The output voltage is regulated with a ripple voltage below 7 mV. The controlling circuit including buffers with ideal comparators has a power consumption of 129 μW, the average efficiency is 67% and the peak efficiency of the converter is 81%.

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ER -

Synthesis and design of a fully integrated multi-topology switched capacitor DC-DC converter with gearbox control

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