Name
Title | ||
|---|---|---|
A Hybrid Dual-Path Step-Down Converter with 96.2% Peak Efficiency Using a $250\text{m}$ μ Large-DCR Inductor |
Abstract | ||
|---|---|---|
A dual-path step-down converter (DPNC) is presented for achieving high power efficiency in mobile PMICs. The proposed DPNC supplies a load current (I
<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LOAD</sub>
) via two parallel paths using a hybrid structure with one inductor and one flying capacitor, solving an intrinsic problem of conventional buck converter topology (CBT) which is a significant power loss from a large DCR of inductor (R
<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">DCR</sub>
). Therefore, DPNC not only achieves a high efficiency, but also reduces a heating problem. Additionally, DPNC can shrink a volume of PMIC set with a low manufacturing cost, by alleviating a RDCR specification of inductor. Although a 250mΩ of large-DCR inductor was used, this paper achieved a 96.2% of peak-efficiency, and the total loss from parasitic resistance of external components was reduced to up to 30% compared to CBT. Furthermore, DPNC achieved much higher efficiency not only in a wide ILOAD range, but also in a wide V
<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OUT</sub>
/V
<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">IN</sub>
range. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/VLSIC.2018.8502284 | 2018 IEEE Symposium on VLSI Circuits |
Keywords | Field | DocType |
DPNC,load current,power efficiency,mobile PMIC,buck converter topology,power loss,large-DCR inductor,CBT,flying capacitor,parasitic resistance,hybrid dual-path step-down converter,power management integrated circuit | Parasitic element,Electrical efficiency,Topology,Capacitor,Computer science,Manufacturing cost,Inductor,Electronic engineering,Integrated circuit,Buck converter,Step down converter | Conference |
ISSN | ISBN | Citations |
2158-5601 | 978-1-5386-4215-3 | 0 |
PageRank | References | Authors |
0.34 | 0 | 7 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yeunhee Huh | 1 | 8 | 3.35 |
| Se-un Shin | 2 | 13 | 4.12 |
| Sung-Wan Hong | 3 | 50 | 12.32 |
| Young-Jin Woo | 4 | 47 | 9.63 |
| Yong-Min Ju | 5 | 6 | 2.24 |
| Sung-Won Choi | 6 | 10 | 2.81 |
| Gyu-Hyeong Cho | 7 | 401 | 76.39 |