A Noninverting Buck-Boost Converter with State-Based Current Control for Li-ion Battery Management in Mobile Applications

Ki Duk Kim; Hyung Min Lee; Sung Wan Hong; Gyu Hyeong Cho

doi:10.1109/TIE.2018.2883257

A Noninverting Buck-Boost Converter with State-Based Current Control for Li-ion Battery Management in Mobile Applications

Ki Duk Kim, Hyung Min Lee, Sung Wan Hong, Gyu Hyeong Cho

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

In this letter, a noninverting buck-boost converter with state-based current control is proposed for Li-ion battery management. Unlike conventional multimode control in buck-boost converters, our control scheme utilizes a state controller with a single-level error current and a state checking clock to define the operation mode at every cycle. The state-based buck-boost converter enables seamless mode transition and stable output regulation with fixed interleaving patterns even when input and output voltages are similar, ensuring robust mode change with inherent hysteresis. The prototype IC was fabricated in a 0.18-μm BCD process and achieved 90.9% efficiency with 1.1-A maximum load current capability at 1-MHz switching frequency.

Original language	English
Article number	8556359
Pages (from-to)	9623-9627
Number of pages	5
Journal	IEEE Transactions on Industrial Electronics
Volume	66
Issue number	12
DOIs	https://doi.org/10.1109/TIE.2018.2883257
Publication status	Published - 2019 Dec

Keywords

Buck-boost converter
Li-ion battery management
state-based current control

ASJC Scopus subject areas

Control and Systems Engineering
Electrical and Electronic Engineering

Access to Document

10.1109/TIE.2018.2883257

Cite this

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abstract = "In this letter, a noninverting buck-boost converter with state-based current control is proposed for Li-ion battery management. Unlike conventional multimode control in buck-boost converters, our control scheme utilizes a state controller with a single-level error current and a state checking clock to define the operation mode at every cycle. The state-based buck-boost converter enables seamless mode transition and stable output regulation with fixed interleaving patterns even when input and output voltages are similar, ensuring robust mode change with inherent hysteresis. The prototype IC was fabricated in a 0.18-μm BCD process and achieved 90.9% efficiency with 1.1-A maximum load current capability at 1-MHz switching frequency.",

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AB - In this letter, a noninverting buck-boost converter with state-based current control is proposed for Li-ion battery management. Unlike conventional multimode control in buck-boost converters, our control scheme utilizes a state controller with a single-level error current and a state checking clock to define the operation mode at every cycle. The state-based buck-boost converter enables seamless mode transition and stable output regulation with fixed interleaving patterns even when input and output voltages are similar, ensuring robust mode change with inherent hysteresis. The prototype IC was fabricated in a 0.18-μm BCD process and achieved 90.9% efficiency with 1.1-A maximum load current capability at 1-MHz switching frequency.

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A Noninverting Buck-Boost Converter with State-Based Current Control for Li-ion Battery Management in Mobile Applications

Abstract

Keywords

ASJC Scopus subject areas

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