Part Number: INA210
Tool/software:
Hi team
Here comes a problem. Use INA210 to do high-side current sampling on the low-voltage 12V side.
The connection method is similar to this:
Disconnect the back stage of INA210 and test the Vout value.
When Rshunt is 0 current, the output is 0V. But when the current flowing through Rshunt reaches 1.3A, the output Vout suddenly rises to 5V.
When the current of Rshunt is 1.1A, the output Vout is still normal, basically close to 0V.
The waveform is as follows:
The green one is the Vout waveform. The first peak is when the machine is started; the second time it reaches 5V is after it is loaded with 1.3V.
The output voltage cannot drop any further.
Please help me look at this problem and tell us why, thank you
BR,
Ethan