设置的充电电流和实际电流不一致,实际测量电流比配置电流大,图1为BQ25723寄存器配置,图2为电量计充电信息,图3是串接电流表测量电流值
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Could you measure a series of points to see if any systematic error?
For example, for 64mA to a few Amperes. Usually, low charge current, the tolerance is higher since the signal strength is low, <1mV.
感谢您的反馈。
没错。
GUI显示基于10mΩ的感测电阻器编写,因此IIN_HOST寄存器(0x3F)显示相同的设置值,而与使用的输入感测电阻器无关。因此,用户需要根据所使用的输入电流感测电阻器自行转换/缩放设置值,以实现其所需的IIN_HOST值。
这种转换是线性的。例如,如果使用7mΩ的输入感测电阻器,电流将是显示的寄存器设置值的10/7=1.43x。同样,如果使用5mΩ的输入电流感测电阻器,电流会加倍。