PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems

Sung Yun Park; Jihyun Cho; Kyuseok Lee; Euisik Yoon

doi:10.1109/ISSCC.2015.7063004

PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems

Sung Yun Park, Jihyun Cho, Kyuseok Lee, Euisik Yoon

Yonsei Advanced Science Institute

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

10 Citations (Scopus)

Abstract

Implantable biomedicai systems usually operate in energy-limited environments and exhibit large variation of power consumption ranging from constant low-power (bio-signal sensing) to sporadic high-power (stimulation and/or burst data transmission) [1]. Thus, energy-efficient switching power converters that can support a wide range of load variation are necessary to meet this requirement. Pulse frequency modulation (PFM) power converters can support this large load variation with a high power-conversion efficiency (PCE) [2]. However, their unpredictable switching noise degrades the power supply integrity and hence deteriorates the signal quality in implantable biomédical systems. Pulse-width modulation (PWM) power converters can provide predictable output spectrum, but their PCE in light loads suffers. Although various techniques have been explored over the past years [3-5], the PCE of the PWM converters is still not adequate for low current levels (<100uA) that most of the implantable biomedicai systems consume.

Original language	English
Title of host publication	2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	218-219
Number of pages	2
ISBN (Electronic)	9781479962235
DOIs	https://doi.org/10.1109/ISSCC.2015.7063004
Publication status	Published - 2015 Mar 17
Event	2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers - San Francisco, United States Duration: 2015 Feb 22 → 2015 Feb 26

Publication series

Name	Digest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume	58
ISSN (Print)	0193-6530

Other

Other	2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
Country/Territory	United States
City	San Francisco
Period	15/2/22 → 15/2/26

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/ISSCC.2015.7063004

Cite this

Park, S. Y., Cho, J., Lee, K., & Yoon, E. (2015). PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems. In 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers (pp. 218-219). Article 7063004 (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; Vol. 58). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISSCC.2015.7063004

Park, Sung Yun ; Cho, Jihyun ; Lee, Kyuseok et al. / PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems. 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2015. pp. 218-219 (Digest of Technical Papers - IEEE International Solid-State Circuits Conference).

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abstract = "Implantable biomedicai systems usually operate in energy-limited environments and exhibit large variation of power consumption ranging from constant low-power (bio-signal sensing) to sporadic high-power (stimulation and/or burst data transmission) [1]. Thus, energy-efficient switching power converters that can support a wide range of load variation are necessary to meet this requirement. Pulse frequency modulation (PFM) power converters can support this large load variation with a high power-conversion efficiency (PCE) [2]. However, their unpredictable switching noise degrades the power supply integrity and hence deteriorates the signal quality in implantable biom{\'e}dical systems. Pulse-width modulation (PWM) power converters can provide predictable output spectrum, but their PCE in light loads suffers. Although various techniques have been explored over the past years [3-5], the PCE of the PWM converters is still not adequate for low current levels (<100uA) that most of the implantable biomedicai systems consume.",

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Park, SY, Cho, J, Lee, K & Yoon, E 2015, PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems. in 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers., 7063004, Digest of Technical Papers - IEEE International Solid-State Circuits Conference, vol. 58, Institute of Electrical and Electronics Engineers Inc., pp. 218-219, 2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers, San Francisco, United States, 15/2/22. https://doi.org/10.1109/ISSCC.2015.7063004

PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems. / Park, Sung Yun; Cho, Jihyun; Lee, Kyuseok et al.
2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc., 2015. p. 218-219 7063004 (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; Vol. 58).

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

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Park SY, Cho J, Lee K, Yoon E. PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems. In 2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers. Institute of Electrical and Electronics Engineers Inc. 2015. p. 218-219. 7063004. (Digest of Technical Papers - IEEE International Solid-State Circuits Conference). doi: 10.1109/ISSCC.2015.7063004

PWM buck converter with >80% PCE in 45μA-to-4mA loads using analog-digital hybrid control for impiantale biomedical systems

Abstract

Publication series

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Bibliographical note

All Science Journal Classification (ASJC) codes

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