TPS84250 PCB design

Nikolay Arsow

Other Parts Discussed in Thread: TPS84250

Hi guys,

Im designing a combo, which consists of 5V 2.5A DC-DC Buck with TPS84250, current/voltage sensor via I2C with SMSC PAC1710.

The design is almost finished, but I'd like to ask the experts to advice whether I designed the layout correct and whether all the PCB requirements have been followed.

Attached are the schematics, pcb top, pcb bottom.

Waiting for your remarks and advices with best regards

Nick

1323.ACSP2_R11.pdf

7382.ACSP2_R11_BOT.pdf

over 11 years ago

0 Nikolay Arsow over 11 years ago

Prodigy 40 points

...forgot to mention that I power the 1710 from the feedback track...not good , but as the track is 20mils and the current drawn from the 1710 is

just 360 microamps/continuous conversion, 10 mucroamps/1 sec conversion and 5.5 microamps in standby, I thought it wouldn't cause

any disturbances over the feedback.

Please advice should I route a separate track to power the 1710?

Nick

0 J Arrigo over 11 years ago

TI__Mastermind 28020 points

Hi Nick,

Sorry for the delay. I just received your post. Let me know if you still need assistance.

You can email me at jarrigo@ti.com.

0 Nikolay Arsow over 11 years ago in reply to J Arrigo

Prodigy 40 points

Hi Arrigo,

Yes, you could still help me. Please have a look at the pictures and advice did I follow all requirements. Any remarks?

Best regards

Nick

0 J Arrigo over 11 years ago in reply to Nikolay Arsow

TI__Mastermind 28020 points

The layout looks very good. It looks like you followed the layout recommendations exactly.

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TPS84250 PCB design