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<p>Conventional single-channel isolated DC-DC converters face inherent limitations in load capacity and conversion efficiency, particularly under high-power demands. To address these challenges, this study proposes an innovative dual-channel parallel-topology isolated DC-DC power converter architecture that merges two independent channels into a single output, improving output power while enhancing efficiency. Using Class-D LC tank configuration with optimized switching frequency to maximize voltage amplitude and enhance power density. The integrated on-chip isolation coreless transformer enables bidirectional power and signal transmission while maintaining galvanic isolation of 6.0kVrms. A low-parasitic rectifier layout fabricated by land grid array package is integrated for reducing the conduction losses. Experimental validation demonstrates a maximum of 1.68W in load capacity and 38.5% peak power-conversion efficiency.</p>

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A dual-channel parallel-topology isolated DC-DC converter with on-chip coreless transformer

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月18日

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  • Chao Geng,
  • Zhen Zhang,
  • Cheng Liu

摘要

Conventional single-channel isolated DC-DC converters face inherent limitations in load capacity and conversion efficiency, particularly under high-power demands. To address these challenges, this study proposes an innovative dual-channel parallel-topology isolated DC-DC power converter architecture that merges two independent channels into a single output, improving output power while enhancing efficiency. Using Class-D LC tank configuration with optimized switching frequency to maximize voltage amplitude and enhance power density. The integrated on-chip isolation coreless transformer enables bidirectional power and signal transmission while maintaining galvanic isolation of 6.0kVrms. A low-parasitic rectifier layout fabricated by land grid array package is integrated for reducing the conduction losses. Experimental validation demonstrates a maximum of 1.68W in load capacity and 38.5% peak power-conversion efficiency.