MM9Z1J638 Current calibration problem

[cui1]

According to the current calibration configuration on the AN12301, I found that the maximum test current was only ±50A.

[diazmarin09]

Hello cui1,

I hope all is great with you. Thank you for using the NXP communities.

Could you please share further details about the HW used? I mean, are you using a custom board or an NXP evaluation board?

Regards,

David

[cui1]

Hello David,
I used the NXP evaluation board,The hardware interfaces refer to the official ones.
Regards,
cui

[diazmarin09]

Hello cui1,

Could you please confirm that VSENSE and TSENSE are disabled? Is the chopper enabled?

Regards,

David 

[cui1]

Hello David,
The above program follows the NXP software template, non-calibration module, normal reading current can reach 700A, calibration module program, reading current can only reach the maximum 50A
Regards,
Cui1

[cui1]

Hello David,
As shown above, the voltage and temperature are disabled and the current is activated. I think it has something to do with gain, please refer to it.
Regards,
Cui1