TPS546D24: Resistor value for VSEL, MSEP1, MSEL2 and ADRSEL

Rice Lee

Prodigy 40 points

Part Number: TPS546D24

Hi,

I can't find any tool/excel to adjust the output on my design.

Do you have ExcelCalculator or any Tool for TPS546D24?? Thanks.

Rice

over 3 years ago

0 Lishuang Zhao over 3 years ago

TI__Expert 7500 points

Hi Rice,

We are looking into this and will feedback to you soon.

Thanks,

Lishuang

0 Peter James Miller over 3 years ago

TI__Mastermind 48200 points

Rice Lee

For new designs, I would recommend using the TPS546D24A instead of the TPS546D24.

The TPS546D24A is pin for pin and PMBus compatible with the TPS546D24, but uses different programming resistors from the TPS546D24. The TPS546D24A has a design tool linked to it's product folder it can be found at:

0 Rice Lee over 3 years ago in reply to Peter James Miller

Prodigy 40 points

Hi Peter

Could you provide the TPS546D24 setting guide for VSEL, MSEP1, MSEL2 and ADRSEL?

By the way, we used TPS546D24 because it's on Broadcom PHY BCM81358 AVS power support list.

Is there any risk if we change to TPS546D24A?

Thanks,

Rice

0 Gerold Dhanabalan - Online Design Tools over 3 years ago in reply to Rice Lee

TI__Genius 14455 points

Hi Rice

The datasheet has the description on how to chose the VSEL, MSEL1, MSEL2 and ADRSEL and you can use the excel tool to help you select the resistors based on the design options you need.

There is difference in the pin strap resistor setting between the TPS546D24A and TPS546D24.

We recommend using the TPS546D24A for the newer designs.

Regards,

Gerold

0 Peter James Miller over 3 years ago in reply to Rice Lee

TI__Mastermind 48200 points

Rice Lee

No, there is no risk to changing to the TPS546D24A, it is able to support all of the applications that the TPS546D24 is able to support. It has all of the functionality of TPS546D24, but uses different pin-strap resistors to select the same initial settings.

0 Rice Lee over 3 years ago in reply to Gerold Dhanabalan - Online Design Tools

Prodigy 40 points

Hi Gerold

I do see description on how to chose the VSEL, MSEL1, MSEL2 and ADRSEL in datasheet and excel tool for TPS546D24A

But I can't find these for TPS546D24, can you help to check? Thanks.

Rice

0 Peter James Miller over 3 years ago in reply to Rice Lee

TI__Mastermind 48200 points

Rice Lee

For new designs, please use the TPS546D24A. It is pin to pin compatible and the functional equivalent to the TPS546D24, it adds some new PMBus features, but it uses different schematic resistors for programming initial boot-up values for PMBuis commands.

0 Rice Lee over 3 years ago in reply to Peter James Miller

Prodigy 40 points

Hi Peter

We'll change to TPS546D24A, thanks.

Rice

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TPS546D24: Resistor value for VSEL, MSEP1, MSEL2 and ADRSEL