TPS53819A: Supports 40A?

Danyal Kadi

Part Number: TPS53819A
Other Parts Discussed in Thread: LM27403

Hello,

It shows that the TPS53819A can support up to 40 amps. However, on this image (attached) in the datasheet it shows 0-25A as well on all of the efficiency curves.

I just wanted to be sure this part supports 25A.

Also what is the advantage (if any) to using LM27403 instead of this part?

Thanks!

over 7 years ago

0 Danyal Kadi over 7 years ago

Prodigy 40 points

Edit: I just wanted to be sure this part supports 40A.

0 Danyal Kadi over 7 years ago in reply to Danyal Kadi

Prodigy 40 points

Also, is the PMBus required for this part to work, or is it just a feature that is "nice to have"?

0 Mathew Jacob1 over 7 years ago in reply to Danyal Kadi

TI__Expert 5910 points

Danyal,

* PMBus is not required to use the part

* The application circuit shows 25A as an example. The part is capable to drive fets that support 40A. However careful thermal management is important at these power levels. When a part is released the curves collected are based on the evm/design and since the evm was designed for 25A the curves were done upto this value.

* There are many design examples using LM27403 for these high currents and personally its always a good idea to start with a proven design and modify.

www.ti.com/.../PMP7935

Regards,

Mathew

Power management

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TPS53819A: Supports 40A?