Tool/software:
Dear TI,
I am experiencing an issue with the inverter current sensor from LEM, based on the reference design.
At currents below 1 Arms, the minimum and maximum current readings match those of the external current probe. However, when the current exceeds 2 Arms, there is a discrepancy between the readings from the current sensor and the external current probe. Specifically, the maximum current reading from the sensor is less than expected.
As the current increases further, the difference between the readings from the current probe and the MCU becomes more significant.
Do you know what could be causing this issue?
By the way, other board design is the same as the referernce design but the current sensor is CASR 25 and the current sensing scale is 43.248 and offset is -64.309.
When I set those values based on the low current test.
When I checked the voltage at the 0A, it should 1.65V(based on the cirucit) but my circuit shows the 1.487V...That is also a little bit weird.
Best regards,
