I am developing a product that uses the NVIDIA Xavier NX module and Seeed’s A206 carrier board, and I am seeking UL certification for the product. However, the certifying body has raised concerns about the safety of the product in the event of a fault involving the PMIC MAX20024, which is used in the Xavier module to manage power.
Specifically, the certifying body has indicated that when certifying for safety, they must consider normal operation of the unit as well as operation during a single fault. They have expressed concern that the MAX20024 may output more than the maximum abnormal charging current of 3mA during a fault, which could result in reverse current flow in a non-rechargeable coin cell battery like the BR1225.
While I am aware that the NVIDIA Xavier module itself is UL certified, I am seeking guidance on what measures can be taken to address the concern raised by the certifying body regarding the safety of the product in the event of a fault involving the MAX20024. Are there any additional safety features or measures that can be implemented to ensure that the MAX20024 does not output more than the maximum abnormal charging current of 3mA during a fault?
Alternatively, would it be safer to use a rechargeable coin cell battery like the ML1220 instead of the non-rechargeable BR1225?
I would appreciate any guidance or resources that can be provided to help me ensure that my product meets all necessary safety requirements.