一种快速响应高效多模式升压降压型转换器

doi:10.3969/j.issn.1001-2400.2016.05.017

西安电子科技大学学报

一种快速响应高效多模式升压降压型转换器

成立业;来新泉

(西安电子科技大学超高速电路设计与电磁兼容教育部重点实验室，陕西西安 710071)

收稿日期:2015-08-04 出版日期:2016-10-20 发布日期:2016-12-02
通讯作者: 成立业
作者简介:成立业(1989-), 男, 西安电子科技大学博士研究生, E-mail: chengliye4213@126.com．
基金资助:
国家自然科学基金资助项目(61106026)

Rapidly transient response with the flexible mode and high-efficiency buck-boost converter

CHENG Liye;LAI Xinquan

(Ministry of Education Key Lab. of High-Speed Circuit Design and EMC, Xidian Univ., Xi'an 710071, China)

Received:2015-08-04 Online:2016-10-20 Published:2016-12-02
Contact: CHENG Liye

摘要/Abstract

摘要：

描述了一种新颖的高效多工作模式可快速响应的电流模升压降压型转换器．转换器有灵活的工作模式，电路可以根据输入电压和电感电流的变化来选择工作模式，并且各种工作模式可以平稳转换．平均电流感应模块可以很精确地量测出电感电流．负载瞬态响应时间较其他转换器有降低．这款电流模转换器使用Silterra 0.18μm CMOS工艺流片．实验结果显示，在4.2V输入电压、1A负载电流条件下，转换器的最大效率达95％，因此，使用该转换器可以延长供电电池使用寿命．输出从空载到2A切换时，输出电压变化为6mV，恢复时间为60μs．

关键词: 多模式, 快速响应, 高效率, 平均电流感应, 平稳切换

Abstract:

A novel current sensing technique with a rapidly transient and flexible mode buck-boost converter is presented. The converter can work in an appropriate mode according to the input voltage (V_IN) and inductor current (I_L), with smooth transition and flexible working modes achieved. The average current sensing (AVCS) circuit has an accurate measurement of I_L. The transient response time is also decreased. The current sensing converter is implemented in the Silterra 0.18μm COMS process. Experimental results show 95％ peak efficiency at an output current 1A with 4.2V V_IN, so that the converter can extend the battery life. The output transient with the load current altering from 0 to 2A is 6mV and the recovery time is 60μs.

Key words: multi modes, rapidly response, high efficiency, average current sensing, smooth switching

成立业;来新泉. 一种快速响应高效多模式升压降压型转换器[J]. 西安电子科技大学学报, 2016, 43(5): 93-97+196.

CHENG Liye;LAI Xinquan. Rapidly transient response with the flexible mode and high-efficiency buck-boost converter[J]. Journal of Xidian University, 2016, 43(5): 93-97+196.

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一种快速响应高效多模式升压降压型转换器

Rapidly transient response with the flexible mode and high-efficiency buck-boost converter

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