TPS2399: The output MOSFET of TPS2399DGK be used for Power supply Oring

Anusha G A

Part Number: TPS2399

Input supply for our board is 48V 28A(MAX)
Since we don't have power supply supporting 28A current we are planning to make oring circuit for power supply(800W, 40A, 60A) .
Please suggest can we use this MOSFET in HOTSWAP circuit's output for oring the power supply.(Please refer to the attached schematic image)

over 2 years ago

0 Avishek Pal over 2 years ago

TI__Mastermind 30915 points

Hi Anusha,

Thanks for reaching out to us.

I am unable to understand your query. Please could you elaborate.

What's the meaning of this sentence?

"Since we don't have power supply supporting 28A current we are planning to make oring circuit for power supply(800W, 40A, 60A)."

How will ORing help to increase power supply capacity?

0 Anusha G A over 2 years ago in reply to Avishek Pal

Prodigy 240 points

We will use TWO board having this same HOT SWAP circuit, We will make 2nd board's load No mount and give supply for only 1st Board

0 Anusha G A over 2 years ago in reply to Anusha G A

Prodigy 240 points

Pls refer to the below image

0 Avishek Pal over 2 years ago in reply to Anusha G A

TI__Mastermind 30915 points

Thanks Anusha for explaining. This MOSFET (BSC093N15NS5) can be used in the oring circuit. However, any MOSFET with lower RDSon can also be used as this oring MOSFET doesn’t need to have good SOA.

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TPS2399: The output MOSFET of TPS2399DGK be used for Power supply Oring