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MSP430FR5728: TIDA-00807 Over Head Fault Indicator Software - How to detect the current surge in 30-40ms

Part Number: MSP430FR5728
Other Parts Discussed in Thread: TIDA-00807


I'm working on a Fault Indicator opportunity. I'm following the "TIDA-00807 Over Head Fault Indicator" ref design.

There is a need to detect the current surge (di/dt) in 1.5-2 AC cycles. The AC line is 50Hz so it is expected to detect the surge in 30-40ms. Is this possible to do that and if yes, what are the guidelines for changes in HW and SW?