• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 106 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TPS65261: Using EN pin for delayed start-up

TPS65261: Could you help me review the TPS65261 SCH if it is ok?

Eggsy Pang
Expert 4985 points
Part Number: TPS65261

Hi team,

My customer use TPS65261 and attached files is the SCH.

Could you help me review if it is ok?

Thanks!

7853.01-POW.pdf

  • 0
    TI__Genius 15135 points

    Hi, Eggsy 

    As a best design practice, suggest you refer the EVM reference design. 

    Some comments: 

    1. For buck3: 5.8Vin --> 5Vout, what is max loading? 

    Based on experience, for 5Vout, Vin should be larger than 7V.

    Because for big duty application, the high-side switch is ON more time in every cycle and high-side Rdson is big, so the thermal is bad. 

    So suggest Vin>=7V. 

    2. For input capacitors, suggest to refer the EVM schematic. 

    Place each 10uF cap for every Buck, and place near to PVINx pin in layout. 

    3. Suggest 2*22uF for every output.