华东师范大学学报（自然科学版） ›› 2026, Vol. 2026 ›› Issue (2): 95-107.doi: 10.3969/j.issn.1000-5641.2026.02.009

• 电源管理与数据转换器 • 上一篇    下一篇

基于自适应二次斜坡补偿的高效峰值电流模式Buck DC-DC

李旭阳, 周晓笛, 吴燕文, 郝松茂, 石春琦*()   

  1. 华东师范大学 微电子电路与系统研究所, 上海　200241
  • 收稿日期:2025-09-28 接受日期:2026-01-26 出版日期:2026-03-25 发布日期:2026-04-03
  • 通讯作者: 石春琦 E-mail:cqshi@ee.ecnu.edu.cn
  • 基金资助:
    上海市科委资助项目 (22DZ2229004); 中央高校基本科研业务费专项资助项目 (40500-20103-222178)

A wide-range high-efficiency peak-current-mode Buck DC-DC converter based on adaptive quadratic slope compensation

Xuyang LI, Xiaodi ZHOU, Yanwen WU, Songmao HAO, Chunqi SHI*()   

  1. Institute of Microelectronic Circuits and Systems, East China Normal University, Shanghai　200241, China
  • Received:2025-09-28 Accepted:2026-01-26 Online:2026-03-25 Published:2026-04-03
  • Contact: Chunqi SHI E-mail:cqshi@ee.ecnu.edu.cn

RichHTML

2

PDF

3

摘要：

本文提出了一种自适应二次斜坡补偿的高效率峰值电流模式 (Peak Current Mode, PCM) 的Buck DC-DC芯片, 通过自适应二次斜坡补偿技术, 使该芯片在宽输入电压、宽输出电压、宽负载电流、宽开关频率范围内均能实现不同的自适应斜坡电压, 具有优秀的瞬态响应. 该芯片采用55 nm BCD工艺设计, 核心面积仅为0.186 mm2. 可以在输入电压为3.7~5.0 V, 输出电压为1.5~3.5 V, 最大负载电流为 1.00 A 以及开关频率为 1.0~4.0 MHz的条件下工作, 峰值效率高达96.0%, 输出电流为1.00 A时效率超过93.0%, 在0.03~1.00 A负载电流范围内效率均大于90.0%. 后仿真结果表明, 所提出的补偿方法对不同应用配置均具有良好的适应性.

关键词: 自适应斜坡补偿, 高效率, 峰值电流模式, Buck DC-DC转换器

Abstract:

This paper presents a high-efficiency peak current-mode (PCM) Buck DC-DC converter utilizing adaptive quadratic slope compensation. The proposed design generates tailored adaptive slope voltages across wide ranges of input voltage, output voltage, load current, and switching frequency, resulting in excellent transient performance. Fabricated in a 55 nm BCD process, the chip occupies a compact core area of only 0.186 mm2. It supports an input voltage range of 3.7~5.0 V, an output voltage range of 1.5~3.5 V, a maximum load current of 1.00 A, and a switching frequency configurable from 1.0 MHz to 4.0 MHz. The converter achieves a peak efficiency of 96.0%, maintains efficiency above 93.0% at 1.00 A output current, and delivers over 90.0% efficiency across the load range from 0.03 A to 1.00 A. Post-layout simulation results confirm that the proposed compensation technique exhibits strong adaptability under varied application configurations.

Key words: adaptive slope compensation, high-efficiency, peak current mode, buck DC-DC converter

中图分类号: