Hello!
I have any trouble with BQ40Z60 chip. I have developed custom PCB (schematic and PCB are attached). Battery pack consists of 4s1p 4400mAh Li-ion cells. NR = 1. FUSE bit in operation status A is permanently set independent of cells/charger/load present or settings and I can't drive any FETs manually(when FET_EN = 1 all FETs are off). Bit registers screenshot is attached. In TRM there are no detailed information about FUSE bit and the reasons of setting this bit. What this bit mean? How can I solve this problem?
P.S. I have no fuse in design.Image may be NSFW.
Clik here to view.
(Please visit the site to view this file)Image may be NSFW.
Clik here to view.
