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

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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-mu m BCD process and achieved 90.9% efficiency with 1.1-A maximum load current capability at 1-MHz switching frequency.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2019-12
Language
English
Article Type
Article
Citation

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v.66, no.12, pp.9623 - 9627

ISSN
0278-0046
DOI
10.1109/TIE.2018.2883257
URI
http://hdl.handle.net/10203/265540
Appears in Collection
EE-Journal Papers(저널논문)
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