TPS54340B-Q1: Is there any difference between TPS54340-Q1 and TPS54340B-Q1 ?

Lian Wu

Genius 5250 points

Part Number: TPS54340B-Q1
Other Parts Discussed in Thread: TPS54360-Q1, TPS54340-Q1, , TPS54360B-Q1

Dears:

Our customer uses TPS54340-Q1 and TPS54360-Q1, and these PNs are NRND.

I promote TPS54340B-Q1 and TPS54360B-Q1, there is an issue about the design:

Is there any difference between TPS54340-Q1(TPS54360-Q1) and TPS54340B-Q1 (TPS54360B-Q1)?

over 5 years ago

0 David Baba over 5 years ago

TI__Mastermind 33050 points

Hello Lian,

I have forwarded your question to the product application engineer for this device who will respond shortly.

Thanks.

0 Robert Blattner over 5 years ago in reply to David Baba

TI__Expert 6215 points

Hello Lian,

The major difference is that internal circuitry has been modified to reduce noise sensitivity. The B versions are less sensitive to diode selection and layout when operated at high frequency. If you need further details, please send an email to robert.blattner@ti.com and copy Martin.Moss@ti.com.

Regards, Robert

0 Lian Wu over 5 years ago in reply to Robert Blattner

Genius 5250 points

Hi Robert:

I sent email and no feedback.

I only want to know can customer use TPS54340B-Q1(TPS54360B-Q1) to replaceTPS54340-Q1 (TPS54360-Q1) directly in the designs？

And the customer’s design as follows:

Pls. give some advice about it.

Many thanks!

0 Ambreesh Tripathi over 5 years ago in reply to Lian Wu

TI__Expert 6860 points

Lian ,

Yes they can use TPS54360B-Q1 and replace TPS54360-Q1 as the B version is dop in replacement of the part . Here is the communication slide you can send to your cusotmer regarding the changes in B version .

Ambreesh Differences between TPS54K B and non-B versions - For customer communica....pdf

0 Lian Wu over 5 years ago in reply to Ambreesh Tripathi

Genius 5250 points

Hi Ambreesh：
Many thanks for your information.
I only have a question about the "dop"
Is it means of double options?
We can replace them have no change any peripheral design?

0 Robert Blattner over 5 years ago in reply to Lian Wu

TI__Expert 6215 points

Hello Lian,

The TPS54340B-Q1 is a drop in replacement for the TPS54340-Q1. If a design works with a TPS54340-Q1, it will work with a TPS54340B-Q1. No change to either the PCB or the BOM will be needed.

Regards, Robert

0 Ambreesh Tripathi over 5 years ago in reply to Lian Wu

TI__Expert 6860 points

I meant Drop in and not dop :)

---Ambreesh

Power management

Power management forum

TPS54340B-Q1: Is there any difference between TPS54340-Q1 and TPS54340B-Q1 ?