Other Parts Discussed in Thread: TPS61098
I am designing a custom board with two sources of power. One is BQ25570 and the other is a separate Boost Converter (TPS61098 to be exact). When BQ25570 is NOT outputting anything from its VOUT signal i.e the buck converter is OFF because VBAT_OK is low, can we have the output of the separate boost converter output 2V into VOUT (as well as the load).?
There is a schottky diode from the output of Boost converter so that when BQ25570 is active it dosen't leak current into the Boost converter. However there is NO schottky diode from the VOUT of BQ25570 and i don't want to keep one as i want the buck converter to output the minimum useful voltage.
Under these circumstances will there be a large leakage via the VOUT pin or there will be NO leakage because probably some mosfet is OFF inside BQ25570 while the buck converter is OFF thereby preventing any leakage (from the output of TPS61098 that connects to the load as well as VOUT)?