BQ25898EVM-730: PCB Routing (Fanout)

Fred Arnold

Part Number: BQ25898EVM-730
Other Parts Discussed in Thread: BQ25898

Hi,

I would like to know what is the best way to connect the Pins of the BQ25898 on a PCB layout.

I am using the EVAL Board but the Layout examples in the documentation are useless because off their exceptionally low resolution.

Question 1:

Is there a way to get a high resolution format so I can see how the IC is connected on the Eval PCB?

Question 2:

It appears the noisy SW (switching) signal of the Inductor is routed inside the board using vias. This is hard to believe so please explain why this is done this way and not given priority and routed on the top layer as I would have expected?

Thanks,

Fred

over 8 years ago

0 Ning T over 8 years ago

TI__Guru 57651 points

1.Could you please provide your email address and I may provide you the layout guidelines.

2. It is not easy to do the way you are asking.

Thanks.

0 Fred Arnold over 8 years ago in reply to Ning T

Intellectual 680 points

Hi Ning Tang,

Thanks for the layout guidelines document.

Thanks,
Fred

0 Jared Mizrahi over 8 years ago in reply to Ning T

Prodigy 125 points

Hi Ning Tang,

Could I also get a copy of the layout guideline documents? Is there a particular reason TI is choosing not to publicly post these documents on the BQ25898 or the evaluation module's product page?

Thanks,
Jared

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BQ25898EVM-730: PCB Routing (Fanout)