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首页> 外文期刊>Microelectronics journal >A monolithic peak current-mode buck converter with fast response for high speed DVS application
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A monolithic peak current-mode buck converter with fast response for high speed DVS application

机译：用于高速DVS应用的具有快速响应的单片峰值电流模式降压转换器

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摘要

A monolithic peak current-mode step-down DC-DC converter with fast response for DVS application is presented in this paper. A novel fast on-chip soft-start circuit is used to reduce the overshoot voltage and inrush current. The loop without large capacitor compensation is adopted to increase the slew rate of the error amplifier, which can dramatically decrease the transient response time of the system. Meanwhile, automatic pulse width modulation (PWM) and pulse skip modulation (PSM) switching are used to improve conversion efficiency during the wide load range. The DC-DC converter has been fabricated with a standard 0.13 p CMOS process. Experimental results show that the start-up time is less than 50 μs without the inrush current and overshoot voltage. The recovery time is less than 8 μs while the load current suddenly changes 300 mA. This converter can operate at 1.5 MHz with output voltage from 0.725 V to 1.5 V for DVS application. The up-tracking speed is about 31.25 μs/V and down-tracking speed is about 21.75 μs/V. Measured power efficiency is 84.2-93.8% for 1-400 mA load current.
机译：本文提出了一种用于DVS应用的具有快速响应的单片峰值电流模式降压型DC-DC转换器。一种新颖的快速片上软启动电路用于降低过冲电压和浪涌电流。采用无大电容补偿的环路来增加误差放大器的压摆率，这可以大大减少系统的瞬态响应时间。同时，自动脉冲宽度调制（PWM）和脉冲跳跃调制（PSM）切换用于提高宽负载范围内的转换效率。 DC-DC转换器采用标准的0.13 p CMOS工艺制造。实验结果表明，在没有浪涌电流和过冲电压的情况下，启动时间小于50μs。恢复时间小于8μs，而负载电流突然变化300 mA。该转换器可以在1.5 MHz下工作，输出电压范围为0.725 V至1.5 V，适合DVS应用。上跟踪速度约为31.25μs/ V，下跟踪速度约为21.75μs/ V。对于1-400 mA负载电流，测得的电源效率为84.2-93.8％。

著录项

  • 来源
    《Microelectronics journal》 |2013年第2期|128-136|共9页
  • 作者

    Miao Yang; Weifeng Sun; Shen Xu; Changbing Qin; Shengli Lu;

  • 作者单位

    National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China;

    National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China;

    National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China;

    National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China;

    National ASIC System Engineering Research Center, Southeast University, Nanjing 210096, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fast transient response; fast tracking; soft-start-up; current sensing; current mode; DC-DC converter;

    机译：快速的瞬态响应;快速跟踪;软启动;电流感应当前模式;DC-DC转换器;

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