基于状态机控制的降压型开关电容DC-DC转换器

›› 2015, Vol. 28 ›› Issue (5): 63-.

基于状态机控制的降压型开关电容DC-DC转换器

邹志鹏,卜刚,邹鹭

(南京航空航天大学电子信息工程学院,江苏南京 210016)

出版日期:2015-05-15 发布日期:2015-05-19

State Machine Control Based Buck Type Switched Capacitor DCDC Converter

ZOU Zhipeng,BU Gang,ZOU Lu

(College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

Online:2015-05-15 Published:2015-05-19
About author:邹志鹏(1990—),男,硕士研究生。研究方向:数模混合集成电路设计。Email:lucifersk@163.com。邹鹭(1989—),女,硕士研究生。研究方向:模拟射频集成电路设计。

摘要/Abstract

摘要：

介绍一种基于状态机控制的多种增益模式转换的控制方法,采用增益跳变和跳周期调制技术,控制增益模式的切换和开关频率,使输出电压稳定,并使系统有较高的转换效率。基于csmc0.5 μm CMOS工艺进行spectreverilog[JP]仿真,结果表明能准确控制3种增益的切换和开关频率的变化,并可输出约1.8 V的稳定电压,纹波＜20 mV,达到了预期目的。

关键词: 电容阵列, 增益跳变, 数字状态机, 跳周期调制

Abstract:

We propose a control means based on the multigain mode conversion based on the state machine control.The system uses the gain hopping technique to switch the mode and the pulse skipping modulation (psm) to change the switching frequency according to the load current and input voltage.Thus,the output voltage will be stable and the system conversion efficiency can be improved.The gain hopping module is automatically controlled by a digital state machine,which is designed and simulated in a CSMC 0.5 μm CMOS process.The result of spectreverilog simulation shows that the state machine can accurately control the switch of three gains and the change of switching frequency.Besides,it could generate the stable output voltage of 1.8 V and attain the expected purpose.

Key words: capacitor array;gain hopping;digital state machine;pulse skipping modulation

中图分类号:

TN492

邹志鹏,卜刚,邹鹭. 基于状态机控制的降压型开关电容DC-DC转换器[J]. , 2015, 28(5): 63-.

ZOU Zhipeng,BU Gang,ZOU Lu. State Machine Control Based Buck Type Switched Capacitor DCDC Converter[J]. , 2015, 28(5): 63-.

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