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一种低静态电流、高稳定性的LDO线性稳压器

陈东坡 何乐年 严晓浪

陈东坡, 何乐年, 严晓浪. 一种低静态电流、高稳定性的LDO线性稳压器[J]. 电子与信息学报, 2006, 28(8): 1526-1529.
引用本文: 陈东坡, 何乐年, 严晓浪. 一种低静态电流、高稳定性的LDO线性稳压器[J]. 电子与信息学报, 2006, 28(8): 1526-1529.
Chen Dong-po, He Le-nian, Yan Xiao-lang. A Low-dropout Regulator with Low Quiescent Current and High Stability[J]. Journal of Electronics & Information Technology, 2006, 28(8): 1526-1529.
Citation: Chen Dong-po, He Le-nian, Yan Xiao-lang. A Low-dropout Regulator with Low Quiescent Current and High Stability[J]. Journal of Electronics & Information Technology, 2006, 28(8): 1526-1529.

一种低静态电流、高稳定性的LDO线性稳压器

A Low-dropout Regulator with Low Quiescent Current and High Stability

  • 摘要: 该文提出了一种低静态电流、高稳定性低压差(LDO)线性稳压器。LDO中的电流偏置电路产生30nA的低温度漂移偏置电流,可使LDO的静态工作电流降低到4A。另外,通过设计一种新型的动态Miller频率补偿结构使得电路的稳定性与输出电流无关,达到了高稳定性的设计要求。芯片设计基于CSMC公司的0.5m CMOS混合信号模型,并通过了流片验证。测试结果表明,该稳压器的线性调整和负载调整的典型值分别为2mV和14mV;输出的最大电流为300mA;其输出压差在150mA输出电流,3.3V输出电压下为170mV;输出噪声在频率从22Hz到80kHz间为150VRMS。
  • Leung K N, Mok P K T. A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation[J].IEEE Journal of Solid-State Circuits.2003, 38(10):1691-1720[2]Leung K N, Mok P K T, Ki W H. A novel frequency compensation technique for low-voltage low-dropout regulator. IEEE International Symposium on Circuits and Systems, Florida: Orlando, May 1999, Vol.5: 102-105.[3]Kwok K C, Mok P K T. Pole-zero tracking frequency compensation for low dropout regulator. IEEE International Symposium on Circuits and Systems, Arizona: Scottsdale, May 2002, vol. 4: 735-738.[4]Rincon-Mora G A, Allen P A. A low-voltage, low quiescent current, low drop-out regulator[J].IEEE J. of Solid-State Circuits.1998, 33(1):36-44[5]Chava C K, Silva-Martnez J. A frequency compensation scheme for LDO voltage regulators[J].IEEE Trans. on Circuits Syst. I: regular paper.2004, 51(6):1041-1050[6]Lee C K, Park H J. All-CMOS temperature independent current reference[J].Electronics Letters.1996, 32(14):1280-1281[7]Leung K N, Mok P K T. Analysis of multistage amplifier-frequency compensation[J].IEEE Trans. on Circuits Syst. I: Fund. Theory Appl.2001, 48(9):1041-1056[8]Razavi B. Design of Analog CMOS Integrated Circuits. Boston, MA: McGraw-Hill, 2001: 361-371.[9]Rincon G A. Active capacitor multiplier in Miller compensated circuits[J].IEEE J. of Solid-state Circuits.2000, 35(1):26-32[10]Thandri B K, Silva-Martinez J. A robust feedforward compensation scheme for multistage operational transconductance amplifiers with no Miller capacitors[J].IEEE J. of Solid-State Circuits.2003, 38(2):237-243[11]Fan Xiaohua, Mishra C. Single Miller capacitor frequency compensation technique for low-power multistage amplifiers[J].IEEE J. of Solid-State Circuits.2005, 40(3):584-592
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出版历程
  • 收稿日期:  2005-11-28
  • 修回日期:  2006-04-14
  • 刊出日期:  2006-08-19

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