TPS2412: Survey ORing solution that have current limit function

Hi Praveen,

THe LM74900-Q1, OCP behavior is Auto-retry, my current limit request just like "power limit", when hit the OCP, Iout could keep output in OCP setting level.

Do you have other recommend part? 

design spec:  Vin=12V, Iout= 8A , current limit=12A

Thank you!

Hi Simon,

LM749x0-Q1 Over current operation: During an over current event, the over current is allowed for Timer duration after which the controller turns OFF the FET and disconnect the load from power supply. You can choose to latch off or retry after an over current fault.

Limiting the over current to current limit value is possible for lower currents (in the order of <5A) using our eFuse devices like TPS2595. It is not possible to limit higher currents as the FET SOA would be the limitation. So, we do not have devices which can limit limit current to over current threshold for >5A. 

Hi Praveen,

In other word, I have redundant 12V system, so need ORing solution to block the reverse current; At the same time, I need to make sure the load current won't sink in single side, that is why I search Oring with "Powr limit" solution. 

Do you have other alternative solution? eg. "Hot-swap controller +back to back MOSFET+ Power limit" or something else ?

Please recommend, thank you!

Hi Simon,

Can you please elaborate more on what you meant by 'I need to make sure the load current won't sink in single side' 

Hi Praveen,

My concern is that in real application, two power supply voltage usually have a little bit difference that will cause the current unbalance condition, worst case is all load current sourcing from one of power supply.

Do you have similar solution could achiev as below topology..