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A Dual-Input Bidirectional Three-Level Battery Charger Using Coarse-Fine V CF Balancing and Frequency Foldback Control for Foldable Mobile Applications

A Dual-Input Bidirectional Three-Level Battery Charger Using Coarse-Fine V CF Balancing and Frequency Foldback Control for Foldable Mobile Applications 150 150
Author(s): Woojin Hong, Hyebong Ko, Jinwoo So, Woonhyung Heo, Yonghwan Cho, Jeongdu Yoo, Ho-Sung Son, Youngwoo Chung, Dong-Joon Kim, Byeonghyeon Jin, Minkyu Kwon, Kyungmin Park, Daeyong Han, Sungkye Cho, Daewoong Cho, Jung Wook Heo, Sungwoo Lee, Sungwoo Moon, Hyoung-Seok Oh, Hwayeal Yu

Abstract:

Foldable mobile applications recently have been leading the battery charger to have a slim height with a small form-factor and high efficiency at higher input voltages to increase the power density. Another trend for mobile applications is the power sharing, which enables to supply two mobile devices simultaneously. To meet …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 15
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3618150
Publisher: IEEE

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A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme

A Two-Stage 12–1-V Converter Featuring Regulated Resonant SC Regulators and Collaborative Control Scheme 150 150
Author(s): Shengdao Ren, Yukan Du, Menglian Zhao, Zhichao Tan, Chushan Li, Yong Ding, Wuhua Li, Wanyuan Qu

Abstract:

In the field of power converters for data centers, the two-stage architecture has received widespread attentions due to its various advantages. Especially, the switched-capacitor voltage regulator (SCVR) becomes popular as the second-stage converter owing to its high efficiency and power density. However, the SCVR suffers from poor voltage regulation and …

Published in: IEEE Journal of Solid-State Circuits
Page(s): 1 – 14
Year of Publication: 2025
Electronic ISSN: 1558-173X
DOI: 10.1109/JSSC.2025.3609744
Publisher: IEEE

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A 40.68-MHz, 200-ns-Settling Active Rectifier for mm-Sized Implants

A 40.68-MHz, 200-ns-Settling Active Rectifier for mm-Sized Implants 150 150
Author(s): Ronald Wijermars, Yi-Han Ou-Yang, Sijun Du, Dante G. Muratore

Abstract:

This letter describes a fast-settling active rectifier for a 40.68 MHz wireless power transfer receiver for implantable applications. Fast-settling and low power are achieved through a novel direct voltage-domain compensation technique. The rectifier maintains high efficiency during load and link variations required for downlink communication. The system was fabricated in 40nm …

Published in: IEEE Solid-State Circuits Letters
Page(s): 305 – 308
Year of Publication: 2025
Electronic ISSN: 2573-9603
DOI: 10.1109/LSSC.2025.3611484
Publisher: IEEE

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