A 95.3% 5V-to-32V Wide Range 3-Level Current Mode Boost Converter with Fully State-based Phase Selection Achieving Simultaneous High-Speed VCF Balancing and Smooth Transition

📋 论文概要

本文提出了一种宽范围3电平电流模式升压转换器，采用全状态基相位选择技术，解决了多电平转换器中飞电容电压不平衡导致的导通损耗问题，实现了95.3%的高效率。

💡 主要创新点

• 提出全状态基相位选择方法，动态调整开关状态以平衡飞电容电压，降低导通损耗。
• 实现5V至32V的宽输入/输出电压范围，同时保持高效率。
• 采用3电平结构，降低开关管电压应力，适用于高输出电压应用。

🏷 关键词

📄 原文摘要

for various applications that require a high supply voltage, including solid-state drives (SSDs), LED drivers, etc. A multi-level (ML) boost converter (BST) with a high conversion gain (CG) and low voltage rating for switches (SWs) would be an ideal solution to regulate the high output voltage (VO) [1– 4]. However, in practice, ML converters suffer from a flying capacitor (CF) voltage (VCF) imbalance due to the parasitic capacitance (Cpar) and gate driving power (PGD), etc., which causes not only large conduction losses (PCOND) in the on-resistance (RON) of the SWs and the parasitic resistance (RL) of the inductor (L), but also a large overlap loss and damage to the SWs. For these reasons, a VCF calibration (VCF-cal) technique is essential

👥 作者与机构

Seung-Ju Lee1, Yeon-Woo Jeong1, Mun-Jung Cho1, Jong-Hun Kim1,

Hwa-Soo Kim1, Jun-Suk Bang2, Se-Un Shin1 Ulsan National Institute of Science and Technology, Ulsan, Korea Samsung Electronics, Hwaseong, Korea 1 2 DC-DC boost converters are widely used