LM5069: automotive equivalent

Hello,

For an automotive application (12V battery) we are developping a generic ECU and its power board.

My question is specially about the power board, that is used to drive several loads such as injectors, heaters, ... total battery current drawned can reach up to 50A.

For this board, our customer wants us to implement a reverse battery voltage and reverse current protections, plus a general over-current protection to be able to detect and cut the power if too much loads are connected at the same time. I precise this general over-current protection shall not be triggered in case of an output short-current condition (output mosfets drivers are dedicated for that), but only if too much loads are activated together, leading to input battery current going over the PCB capabilities.

I took a look at TI's online documents, and found the TIDU415 that fullfill exactly these requirements ... except the LM5069 is not an automotive component which is not allowed for our application. We selected the LM5050-Q1 to make the reverse current and reverse battery voltage protection.

To be able to set precisely the over-current limit, we'd like the current measure to be made with a resistor shunt rather than with the mosfet drain-source voltage (better stability over temperature range). Then regarding our power level, an external N-channel mosfet driven by this component is required. I found several automotive component using mosfet Vds for over-current protection (for example some TPS or LM9061), but none with resistor shunt.

An additional interesting functionality would be inrush current limitation, as we will have large capacitors connected at the output.

Does TI has in portfolio an automotive equivalent for LM5069 (over-current protection with external shunt and external N-channel mosfet ; optionnaly inrush current limitation) ?

Thank you for your help,

Best regards,

Julien