Before i start the design, i had few queries. This is based on Design #6 available in application report "SLVAES2"(Six System Architectures With Robust Reverse Battery Protection Using an Ideal Diode Controller).
The application requirement is <=10A .
Terms like VPRIMARY, VAUX are mentioned in application report.
On VPRIMARY, i'm interfacing my older design. The design is such that, Either it will have fixed 30V, or in absence of 30V, it has battery voltage from 18V-29.5V.
On VAUX, I'm interfacing the 12V/24V DC source.
refer the below figure.
The priority for power goes like this
1- AC/DC adapter(30V fixed)
2- DC Source (12V/24V)
3- Battery(18V-29.5V)
On VSNS pin of U2, I will connect 30V AC/DC adapter. The priority goes like this, If there is 30V, it will Take input from 30V, irrespective of other sources present.
A condition arises , where, 30V is not present on VPRIMARY, and battery voltage is present which is around 29.5V which is also connected to same VPRIMARY, If there is DC source(12V/24V) connected to VAUX, The input should be taken from DC source(12V/24V), even though there is voltage on VPRIMARY.
Only when there is no fixed 30V from adapter, or DC source (12V/24V) is absent , then it should take input from battery(18V-29.5V).
Based on the design input Will The priority be same as i mentioned or is there something i need to take care of.
Also, any more suggestions for design will also be helpful.
