TPS61322: Design check

Will Wang47

Expert 8530 points

Part Number: TPS61322

Tool/software:

Hi team,

Customer use TPS613221A to get 3.3V in their design, They follow EVM design, could you help check following design?

Vin max 2.5V.

Does 4.7uH the most recommend inductor?

Regards,

Will

over 1 year ago

+1 Nini Zhong over 1 year ago

TI__Genius 16945 points

Hi Will,

the design is fine from myside . You've already follow the recommend rules quite well .

0 Will Wang47 over 1 year ago in reply to Nini Zhong

TI__Expert 8530 points

Hi Nini,

One more question, for the pin3, pin5, they are NC pins, why EVM connect pin3 to GND and pin5 to OUT?

Does this must follow rule? Or we could also leave it floating?

Regards,

WIll

0 Nini Zhong over 1 year ago in reply to Will Wang47

TI__Genius 16945 points

Hi Will,

it's better to solder it to the PCB, do not float for the physical stress. You could connect to either GND or Vout, dependent on which one is easy to approach .

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TPS61322: Design check