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BQ76920: How to boot without switch button in high-side configuration

Part Number: BQ76920
Other Parts Discussed in Thread: TIDA-00792

Good afternoon,

I want to make a schematic using a BQ76920 but I am in high-side FETs configurations, I saw on the "bq769x0 Boot Switch Alternatives" a way to do that but it's using an other voltage source (Fig.3) and I would a system more like the last one (Fig.5) but I don't know if it's suitable for my case. Because here the Pack- is connected to the ground and so D2 will be just tied between two 0V, can you help me please ?

John Smith