Dear all,
I have seen the similar question.
https://e2e.ti.com/support/power-management/f/196/t/685667
It was mentioned in the post that If Vin>Vo+Vf (Vf is the voltage drop of the upper side body diode), then TPS61089 will works in the pass through mode. both the low side and the high side FET off, only body diode conducts.
We would like to confirm the following questions:
1、If Vin=12V，The Vout is set to 9V，is the actual output voltage zero?
2、If the input voltage starts to drop. When the input voltage drops to any volts, can the boost function of the chip work properly? I mean, in what condition，the chip start to boost.
3、Vin=12V，and the Vout is set to 9V. If Vin is keep 12V for longtime, Will the chip be damaged?
I am looking forward to your reply. Thank you.
Kevin Chen
如果输入电压开始下降，当输入电压降低到几伏时，芯片的升压功能能够正常工作？
