低电阻表面贴装电流分流器

摘要：超低电阻表面安装电流检测电阻像理想的包。物理设计，皮带的金属，似乎理想，提供可能的最低电感。往往这些电阻需要某种形式的电阻电容筛选以限制开关噪声峰值。问题是分流器的时间常数是除以回路电阻的包电感。因此，低分流电阻、越长衰变倍。

Maxim>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:currentsense,resistor,surfacemount,currentshunt,current-senseresistors,shuntresistanceDec27,2001APPLICATIONNOTE908Ultra-LowResistanceSurfaceMountCurrentShuntsAbstract:Ultra-lowresistancesurfacemountcurrent-senseresistorsseemliketheidealpackage.Thephysicaldesign,astrapofmetal,seemsideal,offeringthelowestinductancepossible.Toooftentheseresistorsneedsomekindofresistorcapacitorfiltertolimittheswitchingnoisespikes.Theproblemisthatthetimeconstantfortheshuntisthepackageinductancedividedbythecircuitresistance.Consequently,thelowertheshuntresistance,thelongerthedecaytimes.Ultra-lowresistancesurfacemountcurrent-sens