LM74700-Q1: Parallel Power Supplies with OR controllers

Mikail

Part Number: LM74700-Q1
Other Parts Discussed in Thread: UCC29002, UCC39002, TPS2412

Hi team i want to ask a question about parallel 4 power supplies.

is it possible if ı use a OR controller in the end of a power supply for parallel 4 PSU's.

i want to make a battery charger and improve the wattage could this IC a solution for my problem?

over 1 year ago

0 Rakesh over 1 year ago

TI__Guru** 101841 points

Hi Mikail,

Thanks for reaching out.

What is the load current in each path ?

Do you want load sharing between the power supplies or the power supplies have the load sharing function.

Best regards

Rakesh

0 Mikail over 1 year ago in reply to Rakesh

Intellectual 465 points

Hi rakesh , the load in each pad is 30A i want to share the load between de power supplies , they havent load sharing function.

Thanks in advance

Regards

Mikail

0 Rakesh over 1 year ago in reply to Mikail

TI__Guru** 101841 points

Thanks Mikail for the details.

You would need a load sharing controller like UCC29002 / UCC39002 to regulate the power supply voltage for proper load sharing function otherwise the power supply having higher voltage tries to feed the entire load.

I am looping in my colleague to share some more details.

Best Regards,

Rakesh

0 Praveen GD over 1 year ago in reply to Rakesh

TI__Guru 57737 points

Hi Mikail,

I am sharing an application note which shown how to achieve Current Sharing in Redundant Systems using UCC39002+TPS2412.

CurrentSharingslua550.pdf

Right now we do not have a controller which has integrated load sharing + ORing functions.

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LM74700-Q1: Parallel Power Supplies with OR controllers