26.2 A Compact 4Vin 93.4%-Peak-Efficiency 12A Load and 20mV Undershoot Resonant Sigma Converter with PCB-Embedded Converter-on-Substrate Packaging

Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference 2026

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Authors: Yukan Du, Shengdao Ren, Zheyuan Fei, Ziteng Chen, Menglian Zhao, Chushan Li, Yong Ding, Wuhua Li, Zhichao Tan, Wanyuan Qu
DOI: 10.1109/isscc49663.2026.11409219
Cited by: 0
References: 11

Abstract

This work presents a 4 V input 12 A load resonant sigma converter which consists of a 10 MHz high-side switched-capacitor Buck (SCB) and a 5 MHz low-side direct resonant switchedcapacitor (ReSC) converter. The proposed converter features a low V.A metric, a compact volume, and more importantly, a fast response by providing an$\sim 0.5 \mathrm{A}/\text{ns}$current slew rate during the transient. The measurements show 93.4% peak efficiency, 20 mV undershoot under a 6 A load step and 0.38 A/mm2system current density.

Fields of Study & Subjects

Advanced DC-DC Converters Analog and Mixed-Signal Circuit Design Wireless Power Transfer Systems

Publication details

Journal / source
Digest of technical papers/Digest of technical papers - IEEE International Solid-State Circuits Conference
Pages
448–450
Publication date
15 February 2026
Language
EN