TI中文支持网Part Number:BQ24780S
在电池低电量模式充电时，CC mode的电流设置为3A,但是充电持续一会后电流就降低为设定值的一半左右，此时的电池电量还是很低的，请问这个会是什么原因造成的？
Star Xu：
您好，建议将log数据发过来看一下。是不是芯片进入CV模式所以电流降低。
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小维：
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小维：
充电才3%，应该没有进CV模式吧
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小维：
log 数据如附件0-3%.log
Start: PwrTestManufactureName:DeviceName: S6820EQ UniqueID: 123456 S6820EQ SerialNumber: 123456BATTERY_INFORMATIONCapabilities:BATTERY_SYSTEM_BATTERYTechnology: Rechargeable Chemistry: LIONDesignedCapacity: 6300 mWh (or relative)FullChargedCapacity: 6403 mWh (or relative)CriticalBias: 0 mWh (or relative)CycleCount: 0DefaultAlert1: 320DefaultAlert2: 640BATTERY_STATUSPowerState:BATTERY_POWER_ON_LINEBATTERY_CHARGINGBATTERY_CRITICALCapacitiy: 53 mWh (or relative)Voltage: 10378 millivoltsRate: 3065 mWh (or relative)BatteryEstimatedTime: BATTERY_UNKNOWN_TIMEBATTERY_MONITORPolling 4294967295 times @ 5000ms (press Q to quit)Elapsed(s)BatteryAC/DCRemaining TimeCap(%)Cap(mWh)Rate(mW)mVolt ------------------------------------------------------------------------------00AC00:00:0005330651037850AC00:00:00057303710396100AC00:00:00062302910413150AC00:00:00166303210431200AC00:00:00170303510446250AC00:00:00174307010467300AC00:00:00179304710480350AC00:00:00184306910500400AC00:00:00188305710513450AC00:00:00192306110529500AC00:00:00196306310541550AC00:00:001100306510555600AC00:00:001104307010570650AC00:00:001108307210583700AC00:00:001113307510597750AC00:00:001117308010611800AC00:00:001122309110626850AC00:00:001126308510638900AC00:00:002131308810652950AC00:00:0021353100106641000AC00:00:0021393096106771050AC00:00:0021433109106871100AC00:00:0021473111107011150AC00:00:0021513113107111200AC00:00:0021563116107241250AC00:00:0021613120107371300AC00:00:0021653123107481350AC00:00:0021703124107601400AC00:00:0021743126107711450AC00:00:0021783129107811500AC00:00:0021833131107921550AC00:00:0021873136108031600AC00:00:0021903133108111650AC00:00:0031953135108191700AC00:00:0032003138108331750AC00:00:0032043139108411800AC00:00:0032093141107611850AC00:00:0032122090107531900AC00:00:0032152084107531950AC00:00:0032182092107562000AC00:00:0032202081107582050AC00:00:0032232092107632100AC00:00:0032262072107642150AC00:00:0032292056107652200AC00:00:0032322054107652250AC00:00:0032352027107582300AC00:00:0032382038107692350AC00:00:0032402025107682400AC00:00:0032431984107772450AC00:00:0032461951107752500AC00:00:0032481907107772550AC00:00:0032511882107772600AC00:00:0032541802107762650AC00:00:0042571786107702700AC00:00:0042591778107742750AC00:00:0042611646107682800AC00:00:0042631719107742850AC00:00:0042661652107742900AC00:00:0042681672107712950AC00:00:0042701652107713000AC00:00:0042731623107733050AC00:00:0042751618107733100AC00:00:0042771608107733150AC00:00:0042801601107753200AC00:00:0042821600107763250AC00:00:0042841595107773300AC00:00:0042861592107783350AC00:00:0042881589107793400AC00:00:004290158710781 End: Pass, PwrTest, (null)，
BQ24780S的寄存器赋值如下，看看有没有设置不合适的？
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Star Xu：
您好，请将电流下降前后的参数发过来看一下。电流下降时VIN 的电压和SYS负载是多少。
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小维：
1、VIN=20V;
2、在WINDOWS系统下，没有跑任何重载程式，处于空载状态
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Star Xu：
您好，您的问题E2E已经回复，请继续关注。
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1025676/bq24780s-bq24780s-charging-a-few-minutes-charging-current-reduce
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Sheva Yu：
嘿嘿
