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BQ24072 charging question

Other Parts Discussed in Thread: BQ24072

Hi

We use BQ24072 for our charger control. We found some issue on the application circuit, without battery coneected and power by USB, charger circuit not generate output voltage.

Does anybody have any ideas about why no output while no battery connected?(with battery connected, charger work fine)

 

circuit as attached6622.SC.pptx

 

NT