摘要:许多Dallas半导体公司的电池监视器包含的选项包括一个内部检测电阻测量电流。在某些应用中,流电流通过检测电阻产生的热量可以引进到芯片上的温度传感器,电池监控装置进行阅读的错误。本应用笔记讨论了自加热的关注,包括可以根据不同的情况和配置预计的金额。然后一步步循序渐进的方式,轻松实现软件的补偿算法,以消除或最小化自加热引起的错误。
Maxim>AppNotes>BatteryManagementKeywords:batterymanagement,senseresistor,integratedsenseresistor,selfheating,DS2770,softwareDec18,2002compensationAPPLICATIONNOTE231CompensatingforSenseResistorSelfHeatingAbstract:ManyofDallasSemiconductor’sbatterymonitorscontaintheoptiontoincludeaninternalsenseresistortomeasurecurrent.Incertainapplications,heatgeneratedbytheflowofcurrentthroughthesenseresistorcanintroduceerrorintotheon-chiptemperaturesensorreadingperformedbythebatterymonitordevice.Thisapplicationnoteaddressestheconcernofself-heating,includingtheamountwhichcanbeexpectedundervaryingcircumstancesandconfigurations.Itthenpresentsastep-by-stepapproachtoeasilyimplementcompensationalg
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