TPS548B27: Webench limitation

Obinna Ezeilo

Part Number: TPS548B27
Other Parts Discussed in Thread: TPS548B28

Hi Team,

Webench seems to seems to report that the TPS548B28 and TPS548B27 are not capable of providing 20A @ 3.3V out ?

My customer doesn't understand this limitation, can you please verify and give me some details ?

Thanks, and regards,

Obinna.

0 David_Daniels over 2 years ago

At 3.3V and 20A, the power dissipation can be high. I believe the Max junction is exceeded.

Additionally, our modeling team is investigating an issue with the power dissipation calculation.

If you need to calculate the external component values, you can use the tool here https://www.ti.com/lit/zip/slvrbh6

Power management forum