A Multi-Phase Multi-Path Hybrid SC Buck Converter With Enhanced DCR-Loss Reduction and Alleviated I CF Gathering for 9-48 V-Input PoL Conversions
Abstract
This article presents a multi-phase multi-path hybrid switched-capacitor (SC) buck converter for 9-48 V-input point-of-load applications. The proposed topology uses interleaved SC cells operating at a higher frequency than the high-voltage stage, resulting in phase-balanced capacitor charge/discharge, thereby mitigating the effects of SC current gathering. In addition, the multi-phase operation decouples the high-voltage-stress power cells from high-current-conduction paths, reducing the inductor current under high-step-down conversions. Fabricated in a 180-nm SOI process with 5.7mm2, the proposed converter achieves a measured peak efficiency of 88.3% and a current density of 176 A/cm³ over an input range of 9-48 V and an output of 0.8-1.2 V, using only 11.35 mm³ in passive volume.
Fields of Study & Subjects
Advanced DC-DC Converters
HVDC Systems and Fault Protection
Multilevel Inverters and Converters
Publication details
- Journal / source
- IEEE Transactions on Circuits & Systems II Express Briefs
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Volume
- 73
- Issue
- 7
- Pages
- 678–682
- Publication date
- 25 May 2026
- Language
- 영어