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2、TVS二极管(ESD保护二极管)的基本工作原理

图2.1 ESD保护二极管的应用示例和基本工作原理
图2.1 ESD保护二极管的应用示例和基本工作原理

ESD保护二极管插在信号线与GND之间,保护受保护器件(DUP)免受电压浪涌的影响。正常工作模式下(即没有ESD浪涌情况),除极少量电流(IR)流过二极管使其反向击穿电压(VBR)高于信号线电压之外,几乎没有电流流过ESD保护二极管。当高于反向击穿电压 (VBR)的浪涌电压进入信号线时,ESD保护二极管将大量电流分流到GND,从而抑制浪涌电压低于反向击穿电压(VBR)。

第Ⅱ章:TVS二极管(ESD保护二极管)的基本工作原理

2-1等效电路及优点

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