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首页> 外文期刊>Electronics world >FOLDBACK CURRENT-LIMIT PROTECTION CIRCUIT FOR LARGE LOAD CURRENT LOW DROPOUT REGULATORS
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FOLDBACK CURRENT-LIMIT PROTECTION CIRCUIT FOR LARGE LOAD CURRENT LOW DROPOUT REGULATORS

机译:大型负载电流低压降稳压器的折返限流保护电路

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摘要

AC/DC converters are widely used in many electronic systems, from industrial electronics to consumer devices and more. Low Dropout Regulators (LDOs) are linear regulators particularly useful in portable electronic systems due to their simple structure, low cost, low noise, low power consumption and high power supply rejection. Quiescent current is the key factor in reducing power consumption in LDOs and optimizing their performance. At present, highly-integrated portable systems use large power-management chips for simplicity, but they consume a lot of power, especially when the output is overloaded or the circuit shorted. Such large output currents can permanently damage a transistor, so modern-day power management chips are used as current-limit protection circuits - an important aspect of their design.
机译:AC / DC转换器广泛用于许多电子系统,从工业电子到消费类设备等等。低压降稳压器(LDO)是线性稳压器,由于其结构简单,成本低,噪声低,功耗低以及电源抑制比高,因此特别适用于便携式电子系统。静态电流是降低LDO功耗并优化其性能的关键因素。当前,为简化起见,高度集成的便携式系统使用大型电源管理芯片,但它们消耗大量功率,尤其是在输出过载或电路短路时。如此大的输出电流会永久损坏晶体管,因此,现代电源管理芯片被用作限流保护电路,这是其设计的重要方面。

著录项

  • 来源
    《Electronics world》 |2015年第1947期|18-22|共5页
  • 作者

    LING-FENG SHI; FEI MA;

  • 作者单位
  • 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

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