Design of an Isolated Bidirectional DC–DC Converter With Built-in Filters for High Power Density

Inoue, Shozo; Ishigaki, Masanori; Takahashi, Atsuhiro; Sugiyama, Takahide

doi:10.1109/tpel.2020.3003618

Cited by 26 publications

(20 citation statements)

References 36 publications

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“…The size and total thickness of an LTCC substrate with a thickness of 200 μm was 23 mm × 23 mm and 1.4 mm, respectively. The volume of the proposed converter prototype after molding and aluminum metal housing was 5.36 cm 3 (2.44 cm × 2.44 cm × 0.9 cm). The converter efficiency was measured as a function of output power at an input voltage of 10.8, 12, and 13.2 V, respectively.…”

Section: Fabrication and Experimental Resultsmentioning

confidence: 99%

“…In addition, the components for the converter were placed on both sides of the converter top and bottom to reduce the size. The proposed converter prototype with a volume of 5.36 cm 3 showed the efficiency of 96.18% and maximum ripple noise of 73.75 mV pp . From EMI measurements, it satisfied the IEC61000-6-3 Class B standard.…”

Section: Discussionmentioning

confidence: 98%

“…However, they generate unwanted noise by on/off switching operation and radiate electromagnetic interference (EMI). To overcome the problems, several techniques such as layout strategies [1,2] and circuits with integrated a filter [3,4] have been proposed. In general, DC-DC converter is implemented by a flame retardant (FR-4)-based printed circuit board, whereas our research group has studied low-temperature co-fired ceramic (LTCC)-based DC-DC converter to achieve efficiency improvement and size reduction [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Noise mitigation in 12‐to‐5 V DC‐DC converter using an embedded metal layout strategy

Yun

Jang

Kwon

et al. 2021

IEEJ Transactions Elec Engng

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We propose a 12‐to‐5 V DC‐DC converter using a low‐temperature co‐fired ceramic (LTCC)‐based multi‐layer circuit technology. The converter using seven‐layer LTCC includes an embedded metal layout strategy to achieve noise mitigation. The measured efficiency and maximum output ripple noise of the proposed converter prototype were 96.18% and 73.75 mVpp, respectively. From the result of electromagnetic interference test, the proposed converter satisfied the IEC61000‐6‐3 Class B standard. © 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.

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Section: Fabrication and Experimental Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Noise mitigation in 12‐to‐5 V DC‐DC converter using an embedded metal layout strategy

Yun

Jang

Kwon

et al. 2021

IEEJ Transactions Elec Engng

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show abstract

“…Thus, this proposed circuit can be easily applied to bidirectional converters. A bidirectional isolated ripplecancellation converter based on this technique was proposed in [34], and a bidirectional built-in filter converter was proposed in [35]. On the basis of the converters in [34] and [35], converters for three-port and high-voltage applications were proposed in [36] and [37].…”

Section: Introductionmentioning

confidence: 99%

“…A bidirectional isolated ripplecancellation converter based on this technique was proposed in [34], and a bidirectional built-in filter converter was proposed in [35]. On the basis of the converters in [34] and [35], converters for three-port and high-voltage applications were proposed in [36] and [37]. The converters in [34]- [37] are classified as being in the DAB family.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Comparison of Series Resonant Converter With Embedded Filters for High Power Density DCX of Solid-State Transformer

et al. 2022

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A series resonant converter (SRC) operating as a DC transformer (DCX) is a candidate for the isolated bidirectional DC/DC converters of solid-state transformers (SSTs). However, the input/output current ripple of the SRC is relatively high, which requires bulky parallel capacitors and low-pass filters such as C/LC filters. These additional components reduce the power density. In addition, to operate an SRC as a DCX, a small resonant inductance is desired to reduce the voltage gain variation and achieve a faster transient response. To resolve these problems, a SRC with embedded filters is studied. Adding a clamping capacitor between split transformers not only significantly reduces current ripples and the harmonic components of the input/output currents but also connects resonant inductors in parallel to reduce the equivalent resonant inductance. In addition, dividing the resonant current into two split windings reduces the RMS current of the transformer. This paper presents a detailed analysis, a design methodology, and a comprehensive comparison with the conventional half-bridge CLLC converter with C/LC filters. 1-kW prototypes with a 600-V input voltage and 200-V output voltage demonstrate the superiority of the proposed converter; the second harmonic of the output current was significantly suppressed by 19.3 dB compared with that of the conventional converter with the same power density. The loss breakdown showed the proposed converter mitigated copper loss by 9.47% and eliminated the losses of the filter and DC-link capacitors. The prototype of the proposed converter had the highest efficiency of 95.4% at full-load among prototypes.

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A High Efficiency Isolated Bidirectional Reduced-Switch DC-DC Converter for Electric Vehicle Applications

Venugopal

Robert

2023

Recent Advances in Power Electronics and Drives

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Design of an Isolated Bidirectional DC–DC Converter With Built-in Filters for High Power Density

Cited by 26 publications

References 36 publications

Noise mitigation in 12‐to‐5 V DC‐DC converter using an embedded metal layout strategy

Noise mitigation in 12‐to‐5 V DC‐DC converter using an embedded metal layout strategy

Analysis and Comparison of Series Resonant Converter With Embedded Filters for High Power Density DCX of Solid-State Transformer

A High Efficiency Isolated Bidirectional Reduced-Switch DC-DC Converter for Electric Vehicle Applications

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