Buck型DC/DC转换器自适应斜坡补偿电路设计

›› 2015, Vol. 28 ›› Issue (3): 126-.

Buck型DC/DC转换器自适应斜坡补偿电路设计

何均

(西安电子科技大学电路CAD研究所,陕西西安 710071)

出版日期:2015-03-15 发布日期:2015-03-12
作者简介:何均(1989—),男,硕士研究生。研究方向:模拟和数模混合集成电路设计。E-mail:hejun4305@126.com

Design of a Self-adaptable Slope Compensation Circuit for Buck DC-DC Converter

HE Jun

(Institute of Electronic CAD,Xidian University,Xi'an 710071,China)

Online:2015-03-15 Published:2015-03-12

摘要/Abstract

摘要：

提出了一种可提高Buck型DC/DC转换器带载能力的斜坡补偿设计。针对电流模DC/DC转换器在大占空比下的不稳定性,以及采用斜坡补偿后系统带载能力下降等问题,通过产生分段线性斜坡补偿信号,既保证了系统的稳定性,又提高了系统的带载能力。该电路基于0.5 μm CMOS工艺设计,经Cadence仿真验证,达到了设计目标。

关键词: 电流模, DC DC转换器, 斜坡补偿, 带载能力

Abstract:

A novel slope compensation technique is presented to improve the loading capacity of buck DC/DC converters.To solve problems such as inherent instability of DC/DC converters at large duty cycle and its decreased loading capacity as a result of traditional slope compensation,a piecewise linear slope compensation circuit is designed,which improves both stability and loading capacity of the system.Based on a 0.5 μm CMOS process,the circuit is verified by Cadence simulation.Anticipated results have been achieved.

Key words: current mode;DC DC converter;slope compensation;loading capacity

中图分类号:

TN86

何均. Buck型DC/DC转换器自适应斜坡补偿电路设计[J]. , 2015, 28(3): 126-.

HE Jun. Design of a Self-adaptable Slope Compensation Circuit for Buck DC-DC Converter[J]. , 2015, 28(3): 126-.

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[2]	李杨. 一种大负载峰值电流模DC-DC变换器的设计[J]. , 2016, 29(7): 128-.
[3]	管劲舟,李纪磊. Buck型DC/DC转换器二次斜坡补偿电路设计[J]. , 2015, 28(6): 192-.
[4]	曾菊员. 一种基于OTA和MOCCII实现的n阶多功能滤波器[J]. , 2014, 27(7): 64-.
[5]	欧健,黄冲,袁政,薛超耀. 带跨周期调制的斜坡补偿电路[J]. , 2013, 26(8): 113-.
[6]	赵怡. 电流控制差分电压输入电流传输器设计及应用[J]. , 2012, 25(12): 69-.