Other Parts Discussed in Thread: TPS2113A, , TPS2116, TPS2121, TPS22953
Hi Team,
I am using TPS2115APWR in one of my circuits.
I have 2 batteries as voltage sources (primary and secondary battery).
I want automatic switching between my input power sources for that I am shorting D1 to GND and D0 to high so that the battery with higher voltage will be connected to the output load.
If my batteries are nearly at the same voltage, my load is going to swing between two inputs and I don't want that to happen.
If D0 is connected to GND, the loads will be power from the primary battery or secondary battery based on the voltage at the D1 pin.
I was planning to set a voltage divider at the D1 pin from the primary battery so that when the voltage at the primary battery balls below a particular level, the output of the divider will be less than 0.7V(VOL) of the chip.
My battery voltage will be in the range of 3V to 4.2V.
It is difficult to build such a voltage divider to get a voltage greater than 2V(VOH) of the chip if the battery voltage is greater than 3.5V and less than 0.7V (VOL) when the battery voltage is less than 3.5V.
Is there any solution for this?.
A Schmitt-Trigger could work, but a Schmitt-Trigger of the same specification is difficult to find??.