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BQ40Z50-R1: How to turn off secondary protection

Part Number: BQ40Z50-R1
Other Parts Discussed in Thread: BQSTUDIO

Hi Team,

The customer drew a board according to the recommended circuit of BQ40Z50-R1 to test various protection functions. Before welding test points and modifications, set Fuse_EN and PF_EN to 0 through BQStudio. At the same time, he pressed the Reset command on the right window again and confirmed that the settings of Fuse_EN and PF_EN had been modified.

However, during the modification process, the three-terminal Fuse still broke. Reading the register found that the Fuse bit in operation status A became 1 and could not be cleared.

Is there any way to clear all error states and make Fuse become 0?

Best ergards,

Annie Liu