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一种峰值电流模式下的轻载高效Buck转换器设计
  • ISSN号：1000-7180
  • 期刊名称：《微电子学与计算机》
  • 时间：0
  • 分类：TN43[电子电信—微电子学与固体电子学]
  • 作者机构：[1]西南交通大学微电子研究所,四川成都610031
  • 相关基金：国家自然科学基金重大项目（60990320,60990323）;国家高技术研究发展计划（“八六三”计划）重大项目（2012AA012305）;国家自然科学基金项目（61271090）;四川省科技支撑计划项目（2012GZ0101）
作者： 杨林才[1], 冯全源[1]
关键词： DC-DC, 采样保持, 轻载高效, 峰值电流模式, DC-DC sample hold, light-load and high efficiency, peak current mode
中文摘要：

提出了一种峰值电流模PWM下的轻载高效BuckDC-DC控制方案，该方案采用了峰值电流开关和采样保持电路，实现宽负载范围内很高的转换效率．其中峰值电流开关用以检测负载电流大小，作为轻载或者重载模式的判定；采样保持电路会在轻载模式下工作，通过控制误差信号的变化量来循环开启或者关闭转换器，完成对转换器的开关频率调制．采用0．5μmBCD工艺，仿真结果显示在输入电压12V，输出电压3．3V下，最高有96％的转换效率，而在10mA负载下依然能保持80．3％的转换效率．

英文摘要：

A buck DC-DC control method based on peak current mode is proposed in this paper with improved lightload efficiency. This method use peak current switch and sample hold circuits to achieve high efficiency within wide load current range. According to load current conditions, the peak current switch determines light load or heavy load. Under the light-load conditions, through controlling the variation of error signal, the sample hold circuits turn on or turn off the converter cyclically to obtain switching frequency modulation. Based on 0. 5 um BCD process, the simulation results shows that under the condition of 12 V input and 3.3 V output, the maximum efficiency can be up to 96% and it can keep 80. 3% at 10 mA of load current.

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期刊信息
  • 《微电子学与计算机》
  • 中国科技核心期刊
  • 主管单位:中国航天科技集团公司
  • 主办单位:中国航天科技集团公司第九研究院第七七一研究所
  • 主编：李新龙
  • 地址：西安市雁塔区太白南路198号
  • 邮编：710065
  • 邮箱：mc771@163.com
  • 电话：029-82262687
  • 国际标准刊号：ISSN：1000-7180
  • 国内统一刊号：ISSN：61-1123/TN
  • 邮发代号:52-16
  • 获奖情况:
  • 航天优秀期刊,陕西省优秀期刊一等奖
  • 国内外数据库收录:
  • 荷兰文摘与引文数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:17909