A High-Efficiency and Fast-Transient Digital-LowDropout Regulator with the Burst Mode Corresponding to the Power-Saving Modes of DC-DC Switching Converters

📋 论文概要

该论文提出了一种具有突发模式对应节能功能的高效快速瞬态数字低压差稳压器。通过非线性斜率控制器和突发模式技术，实现了快速瞬态响应和良好的负载调节。

💡 主要创新点

• 提出非线性斜率控制器（NLSC），根据开关频率选择信号动态调整时钟频率，加快瞬态响应并抑制输出电压纹波。
• 采用突发模式（BMT）技术控制积分部分功率开关，改善负载调节并降低功耗。

🏷 关键词

📄 原文摘要

switching-frequency select signal FSEL[1:0]. Initially, the NLSC speeds up the switching frequency, where QBST[6:0] decreases by 1 every 2/3×T1 (=TR/(QN(MAX)-QN(MIN)) time periods. At the end, it slows down the clock frequency, where QBST[6:0] decreases by 1 every 4/3×T1 time periods to suppress DVOUT. Analogously, the switching frequency varies from slow to fast as VSWR falls. The P-type power switch array contains three parts: Proportional (P) part, Derivative (D) part (D1-3[2:0]), and Integral (I) part (I[126:0]). The I part is controlled by the BMT technique to improve load regulation and reduce ΔVOUT in burst mode. Moreover, the transient enhancement (TE) controls the P, I and D parts to improve transient response.

👥 作者与机构

Jian-He Lin1, Yu-Sheng Ma1, Chia-Ming Huang1, Li-Chi Lin1,

Chiao-Hung Cheng1, Ke-Horng Chen1, Ying-Hsi Lin2, Shian-Ru Lin2, Tsung-Yen Tsai2 National Chiao Tung University, Hsinchu, Taiwan Realtek Semiconductor, Hsinchu, Taiwan changing the