Paper Info
Title
A 96.6%-Efficiency Continuous-Input-Current Hybrid Dual-Path Buck-Boost Converter with Single-Mode Operation and Non-Stopping Output Current Delivery
Abstract
This paper presents a hybrid dual-path Buck-Boost DC-DC converter (DPBB) achieving high power efficiency for the entire input voltage (V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</inf> ) 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 (I <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LOAD</inf> ) 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 (V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OUT</inf> ) ripple. It has only a single control mode over the whole V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</inf> range, unlike the previous designs that require complex mode transitions. Note that high efficiency is achieved not only across a wide I <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LOAD</inf> range but also over a wide V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</inf> range. The proposed DPBB achieves 96.6% peak efficiency with the smallest difference between the maximum and minimum efficiencies over a given range of I <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LOAD</inf> and V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</inf> .
Year
DOI
Venue
2021
10.23919/VLSICircuits52068.2021.9492409
2021 Symposium on VLSI Circuits
Keywords
DocType
ISSN
VOUT,reducing conduction losses,inductor path,CBB,mobile applications,nonstopping output current delivery,single-mode operation,continuous-input-current hybrid dual-path buck-boost converter,dual-path buck-boost DC-DC converter,capacitor path,L-path,load current,conventional noninverting buck-boost converters,Li-ion battery,high power efficiency,DPBB,wide VIN range,wide ILOAD range,complex mode transitions,single control mode,output voltage ripple,C-path,voltage 2.8 V to 4.2 V
Conference
2158-5601
ISBN
Citations 
PageRank 
978-1-6654-4766-9
2
0.47
References 
Authors
0
7
Name
Order
Citations
PageRank
Hongseok Shin121.48
Doojin Jang220.81
Gyeong-Gu Kang322.83
Jinuk Kim420.81
Jaechul Kim539918.14
Sohmyung Ha622.16
Minkyu Je733358.17