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Journal Article Efficiency Improvement of a DC/DC Converter using LTCC Substrate
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Authors
Dong Yun Jung, Hyun Gyu Jang, Minki Kim, Junbo Park, Chi?Hoon Jun, Jong Moon Park, Sang Choon Ko
Issue Date
2019-12
Citation
ETRI Journal, v.41, no.6, pp.811-819
ISSN
1225-6463
Publisher
한국전자통신연구원 (ETRI)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.4218/etrij.2018-0551
Abstract
We propose a substrate with high thermal conductivity, manufactured by the low-temperature co-fired ceramic (LTCC) multilayer circuit process technology, as a new DC/DC converter platform for power electronics applications. We compare the reliability and power conversion efficiency of a converter using the LTCC substrate with the one using a conventional printed circuit board (PCB) substrate, to demonstrate the superior characteristics of the LTCC substrates. The power conversion efficiencies of the LTCC- and PCB-based synchronous buck converters are 95.5% and 94.5%, respectively, while those of nonsynchronous buck converters are 92.5% and 91.3%, respectively, at an output power of 100혻W. To verify the reliability of the LTCC-based converter, two types of tests were conducted. Storage temperature tests were conducted at ?닋20혻°C and 85혻°C for 100혻h each. The variation in efficiency after the tests was less than 0.3%. A working temperature test was conducted for 60혻min, and the temperature of the converter was saturated at 58.2 °C without a decrease in efficiency. These results demonstrate the applicability of LTCC as a substrate for power conversion systems.
KSP Keywords
Conversion efficiency(C.E.), DC-DC Converters, LTCC substrate, Low Temperature Cofired Ceramic(LTCC), Low temperature(LT), Output power, Power Electronics, Storage temperature, Synchronous Buck, Temperature test, Working temperature
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
Type 4: