An Accurate Secondary-Side Controller with GaN-Based CGS Isolated Driver Achieving Sub-1% Error On-Chip Sensing

📋 论文概要

本文提出了一种用于LLC谐振变换器的精确次级侧控制器，采用基于GaN的CGS隔离驱动器，实现了片上传感误差低于1%，解决了传统隔离驱动和控制精度不足的问题。

💡 主要创新点

• 提出基于GaN的CGS隔离驱动器设计，实现高效隔离和低延迟信号传输。
• 开发亚1%误差的片上传感技术，显著提升次级侧控制的精度。

🏷 关键词

📄 原文摘要

Chien-Wei Cho1, Sheng-Hsi Hung1, Yu-Tse Shih1, Ke-Horng Chen1, Kuo-Lin Zheng2, Ying-Hsi Lin3, Shian-Ru Lin3, Tsung-Yen Tsai3, Hann-Huei Tsai4 National Yang Ming Chiao Tung University, Hsinchu, Taiwan Chip-GaN Power Semiconductor, Hsinchu, Taiwan 3 Realtek Semiconductor, Hsinchu, Taiwan 4 Taiwan Semiconductor Research Institute, Hsinchu, Taiwan 1 2 LLC resonant converters are commonly used as front-end converters in servers and electric vehicle chargers due to their soft-switching capabilities, including zero-voltage switching (ZVS) and zero-current switching (ZCS) [1-5]. Conventional synchronous rectifiers (SR) use power switches to increase efficiency by replacing diodes [6-8] to handle root-meansquare (RMS) currents up to 11A. However, due to the high on-resistance (Ron) of high-voltage Bipolar-CMOS-DMOS (BCD) power switches, the efficiency gain is only 1.8%. In contrast, a Gallium Nitride (GaN)-based SR can further reduce power loss to 2.0%, but

👥 作者与机构

Chi-Yu Chen1, Tz-Wun Wang1, Po-Jui Chiu1, Yu-Ting Huang1, Xiao-Quan Wu1,