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A 2.15W 120V/230Vac to 5-to-12Vdc Offline Power Converter with Full-Duty-Cycle Input-Series Dual-Branch Converter Achieving 1088mW/cm3 and 87.2% Peak Efficiency

Conference Paper (2026)
Author(s)

Gang Liu (Southern University of Science and Technology , The Chinese University of Hong Kong, Shenzhen)

Junmin Jiang (Southern University of Science and Technology )

Sijun Du (TU Delft - Electrical Engineering, Mathematics and Computer Science)

Xun Liu (The Chinese University of Hong Kong, Shenzhen)

Research Group
Electronic Instrumentation
DOI related publication
https://doi.org/10.1109/ISSCC49663.2026.11409104 Final published version
More Info
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Publication Year
2026
Language
English
Research Group
Electronic Instrumentation
Pages (from-to)
336-338
Publisher
IEEE
ISBN (electronic)
9798331589363
Event
2026 IEEE International Solid-State Circuits Conference, ISSCC 2026 (2026-02-15 - 2026-02-19), San Francisco, United States
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Abstract

This paper presents a 120V/230Vac to 5-to-12Vdc offline power converter consisting of a capacitor-drop AC-DC rectifier and a full-duty-cycle input-series dual-branch DC-DC converter for IoT devices. The proposed converter operates at full-duty-cycle with VCR of D/2 and reduces both the CREC volume and the voltage stress on components, while achieving high efficiency across a broad input and output voltage range. 87.2% peak efficiency, 2.15W output power, and 1088mW/cm3 power density are achieved.

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File under embargo until 31-08-2026