Other Parts Discussed in Thread: BQ25756
Tool/software:
Hi ti Team,
According to the customer's feedback, the abnormal situation of stopping charging after a period of time was caused by large fluctuations in output current sampling. Currently, there are changes to the following circuit, please help to systematically check whether it is OK and give suggestions, thank you.
As shown below, R71 and R7 are normal after changing from 10Ω to 100Ω. Is there any other problem after the two resistors are enlarged? In addition, only step-down charging function is used at present, can the circuit be optimized and simplified?
Application scenario: Adapter input voltage 29.4V, charging cut-off voltage 25.2V, charging current 2.5A.
Now we need help to review whether there is any problem with the schematic design.