UCC29002: UCC29002+TPS2412 for Current Sharing and Redundant Solution

Hello,

I reviewed your schematics an application note and have the following comments.

1. The UCC29002 was designed for load sharing two power supplies operating in parallel.

A. Please refer to figure 2. Current Sharing in Redundant Systems.pdf

B. Your schematic shows TPS2412 with Power Supply 6B tied to the input of the TPS2412 converter and power supply 5B tied to the output of the TPS2412

      >You are then trying to control the output of the TPS2412 with adj pin of the UCC29002.

2. The TPS2412 is a diode or circuit.  If you have two supplies 6B and 5B you will require two ucc29002 and two TPS2412 to get the work per the current share application note.

       A.  Please study figure 2 of the application note.  Current Sharing in Redundant Systems.pdf

Regards,

Hello Mike O' ,

In fact my schematics include 2*TPS2412 and 2*UCC29002... The confusion is due to my hierachical design.

So I made a new schematic with all parts in the same sheet : 

PDF version here : 5280.redondant PSU.PDF

Thanks for guidance,

Before performing recommanded changes, I'd like to advise that my intend was to use FET's RDSon as sensing resistor for UCC29002/1.

See figure 6 of the same application note : 

I'm designing very limited footprint board and was very interested in this configuration.

What are you thinking about ?

Thanks

Hello TI's team,

any update on this topic ?

Thanks