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.

  • TI Thinks Resolved

WEBENCH® Tools/TPS546D24: TPS546D24 WEBBENCH design

Prodigy 10 points

Replies: 1

Views: 31

Part Number: TPS546D24

Tool/software: WEBENCH® Design Tools

Hi,

I use WEBBENCH to generate the schematic for my power circuit to generate 0.84V using TPS546D24. However, my output is only 0.79V.  Is anyone familiar with this part to help?

My design parameters:

- Input: 11.4V to 12.6V

- Output: 0.84V

- Output current: 35A

- Switching frequency: 500Khz

Thanks35A@0.84V_TPS546D24.pdf

  •  

    The WeBench file that you've shared is designed for the TPS546D24A and not the TPS546D24

    While the TPS546D24 and TPS546D24A are largely pin to pin compatible, they have different Pin Detection decode functions.

    For the TPS546D24A, the VSEL programming option for VOUT = 0.84V is Rtop = 86.6k and Rbot = 26.1k

    For the TPS546D24, the VSEL programming option for VOUT = 0.84V is Rtop = 187k and Tbot = 44.2k

    The greater concern with using pin programming for the TPS546D24A on the TPS546D24 device is the COMPENSATION_CONFIG options, and whether the loop is reliably stable.  It would be best to switch from the TPS546D24 to the TPS546D24A.

    Peter James Miller

    Senior Applications Engineer

    TI Power - Buck Switching Regulators - Mid Voltage

    Senior Member Technical Staff 2020

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.