• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 64 subscribers
  • Views 241 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

TPS53319: Schematic Review

Kuan Wei Chen (Kevin Chen)
Genius 9710 points
Part Number: TPS53319

Dear Team,

Can you check is there anything need to modify for both rails?

BR

Kevin

  • 0
    TI__Prodigy 580 points
    Hi Kevin,

    I will take a look at these schematics and provide my feedback no later than tomorrow morning.
  • 0
    TI__Prodigy 580 points
    Hi Kevin,

    Overall both schematics do not have any issues. But I would like to suggest one change to both:

    I highly recommend adding a 4.7uF bypass cap from Vdd to GND (In addition to the bypass cap on Vin). This cap will need to be placed as close as possible the the Vdd pin during layout (See the datasheet layout recommendations for an example).

    Two things to note: (1) I could not tell the inductor value and (2) mixed caps on the output make it hard to estimate the injected ripple voltage. The RCC ripple injection circuit looks to be injecting enough voltage, but our equations are meant to handle ceramic caps only so I cant be certain.