Other Parts Discussed in Thread: BQ25700A,
Do we have any test picture of BAT pin during the start-up from Vbus without battery connected?
below is a test waveform on customer boards. And you can find the BAT voltage ramp up from 0 to ~10V(1.3s duration) to 17.6V. And till now, the battery is not connected to BAT pin. And i would like to know why there is a 1.3s@10V duration. In my understanding, the BAT voltage should keep rising during start-up as the BAT cap is charged continuously. What's your idea?
we did similar test on BQ25700A, and the output of BAT pin keeps rising from 0V to 17.6V as below. And there is no 10V transition voltage level. I am curious what introduces the difference.