A 96.6%-Efficiency Continuous-Input-Current Hybrid Dual-Path Buck-Boost Converter with Single-Mode Operation and Non-Stopping Output Current Delivery

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This paper presents a hybrid dual-path Buck-Boost DC-DC converter (DPBB) achieving high power efficiency for the entire input voltage (VIN) range (2.8 to 4.2V) from a Li-ion battery for mobile applications. Unlike conventional noninverting buck-boost converters (CBB), the proposed DPBB supplies a load current (ILOAD) at all phases by using the inductor path (L-path) and capacitor path (C-path) alternately. As a result, our design achieves high efficiency by reducing conduction losses and suppresses the output voltage (VOUT) ripple. It has only a single control mode over the whole VIN range, unlike the previous designs that require complex mode transitions. Note that high efficiency is achieved not only across a wide ILOAD range but also over a wide VIN range. The proposed DPBB achieves 96.6% peak efficiency with the smallest difference between the maximum and minimum efficiencies over a given range of ILOAD and VIN. © 2021 JSAP.
Publisher
Institute of Electrical and Electronics Engineers Inc.
Issue Date
2021-06
Language
English
Citation

35th Symposium on VLSI Circuits, VLSI Circuits 2021

ISSN
2158-5601
DOI
10.23919/VLSICircuits52068.2021.9492409
URI
http://hdl.handle.net/10203/288886
Appears in Collection
EE-Conference Papers(학술회의논문)
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