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TPS548D21: Request the Design Review.

Louis Han15
Genius 4680 points
Part Number: TPS548D21

hello

Can you Review the schematic for below specifications?

VIN : 4.8 ~ 5.8V

Output Voltage : 0.85V (+- 0.025V)

Output Current : 25A ~ 30A

OP Temperature : -40 ~ 80℃

Regards.

DTU_190226_TPS548D21RVFR.pdf

  • 0
    TI__Guru**** 191445 points
    Louis,

    What is your time frame? We will try to review this in the next 1 to 2 days. Will that work?
  • 0 in reply to JohnTucker
    Genius 4680 points
    Hi John
    I will produce the PCB next monday.
    so I request to feedback of review before Saturday
    Regards.
  • 0 in reply to Louis Han15
    TI__Intellectual 2460 points

    Hello,

    Here are the comments:

    1. R354/R355 can NOT be populate. Otherwise, it will short. 

    2. C213/R350: I found 1nF and 1ohm better suppress the high frequency noise. It is optional to change when you evaluate the performance.

    3. Input capacitor: change C208 =100nF or add 100nF and place next to pin 20 and 21. This cap will help reduce the high switching frequency noise.

    4. R346: The setting is 1ms startup. However, I saw 4mF at the output capacitance. I am NOT sure you actually plan to use all 3x1000uF populate or not. Just concerning on the inrush current

    Kit