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

over 5 years ago

0 JohnTucker over 5 years ago

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 Louis Han15 over 5 years ago 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 Kit Nguyen over 5 years ago 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

Power management

Power management forum

TPS548D21: Request the Design Review.