A 10MHz Time-Domain-Controlled Current-Mode Buck Converter with 8.5% to 93% Switching Duty Cycle

📋 论文概要

本文提出了一种10MHz时域控制的电流模式降压转换器，通过时域控制替代传统模拟电流环路，解决了电感电流传感器噪声敏感和次谐波振荡问题，实现了8.5%至93%的宽开关占空比。

💡 主要创新点

• 采用时域控制方法取代传统模拟电流环路控制，提高了噪声抗扰度并简化了频率补偿。
• 实现了极宽的开关占空比范围（8.5%-93%），适用于宽输入/输出电压应用场景。

🏷 关键词

📄 原文摘要

Current-mode DC-DC converters offer various advantages over voltage-mode DCDC converters such as much simpler frequency compensation, automatic over-current protection, and faster transient response [1,2]. For current-mode control, however, an accurate inductor current sensor is required which can be very sensitive to noise. Another concern in designing a current-mode DC-DC converter is the instability under certain operating conditions known as subharmonic oscillation. A peak-current-mode buck converter, for example, may become unstable when its switching duty cycle is larger than 50% and slope compensation is required to ensure stable operation. While both current-mode and voltage-mode DC-DC converters are conventionally controlled by voltagedomain controllers that use voltage signals as control variables, the works in [3] and [4] have shown that voltage-mode DC-DC converters can also be controlled

👥 作者与机构

Jin-Gyu Kang, Min-Gyu Jeong, Jeongpyo Park, Changsik Yoo

Hanyang University, Seoul, Korea