Other Parts Discussed in Thread: INA219,
Hi Team,
Here has current sense incorrect issue from my customer that need your help for it.
Shut resistor : 0.01 ohm ;
Set: 0.86A current pass through the shut resistor
Read 0X01 shut voltage=0364(Hex)=868(dec), -->868*10uV=8.68mV
Read 0X02 bus voltage=0V
Read 0X04 Current=10EF(Hex)=4335(dec), -->4335*1mA=4.335A
--> From the result that it's correct for the shut voltage and bus voltage. But the current is 4.335A not the 0.86A
Change to set the current to 0.56A pass through the shut resistor
Read 0X01 shut voltage=0235(Hex)=565(dec)-->565*10uV=5.65mV
Read 0X02 bus voltage=0V
Read 0X04 Current=0B04(Hex)=2820(dec),-->2820*1mA=2.82A
As the result that current are not match, need your help for this issue and concern.
Note. Attached file has listed the the reading value, setting, and circuit..
INA216 Current measuring 05092019.docx