TPS25983: Multiple problems with Excel Calculator

Benjamin Bawkon

Part Number: TPS25983

Hello TI,

I've found two issues with the Excel calculator for this device. Are there any plans to release an updated and corrected version?

The first is the current limit calculation of RILIM. Making Imax == 18.0 gives a suggested value of 67.94Ohm, but the calculator selects 124 Ohm for the actual, and will not allow me to over-ride. It complains about a value in G40, which is a blank cell.

The second issue is the VIN thresholds graph. The values are all completely nonsensical. Not a big deal, but I'm guessing it would be pretty easy to fix.

Thank You,

Ben

over 2 years ago

0 Arush Gupta over 2 years ago

TI__Mastermind 39295 points

Hi Ben,

I will check this. Can you share your updated excel sheet. This will help in replicating the issue.

Thanking you,

Arush

0 Benjamin Bawkon over 2 years ago in reply to Arush Gupta

Expert 1100 points

Arush,

Here you go!

Thank you,

BenTPS25983_Design_Calculator_v1.2.xlsm

0 Arush Gupta over 2 years ago in reply to Benjamin Bawkon

TI__Mastermind 39295 points

Hi Ben,

I got the issue. I will correct this and provide you with updated design calculator. I hope this is not stopping any other workflow for you.

Best Regards,

Arush

0 Benjamin Bawkon over 2 years ago in reply to Arush Gupta

Expert 1100 points

Arush,

Now, it's not the end of the world. I did the calculations that the sheet had issues with by hand.

Best Regards,
Ben

0 Arush Gupta over 2 years ago in reply to Benjamin Bawkon

TI__Mastermind 39295 points

Thank you for understanding.

0 Benjamin Bawkon over 1 year ago in reply to Arush Gupta

Expert 1100 points

Arush,

Sure. Can you give any estimation on a timeframe for an updated calculator though? Before this product goes for fabrication, it would be nice to confirm all of my calculations using the TI tool.

Best Regards,
Ben

0 Arush Gupta over 1 year ago in reply to Benjamin Bawkon

TI__Mastermind 39295 points

Benjamin,

I will try to correct & release the calculator by next week. If I am unable to correct it, I can still verify your final schematic.

Best Regards,

Arush

0 Arush Gupta over 1 year ago in reply to Benjamin Bawkon

TI__Mastermind 39295 points

Hi Benajmin,

TPS25983_Design_Calculator_v1.3.xlsm

PFA the updated file. I will update this on web in some time. Please use this for your design purpose.

Kindly reply here for any more questions or click resolved if none,

Best Regards,

Arush

0 Arush Gupta over 1 year ago in reply to Arush Gupta

TI__Mastermind 39295 points

Also Thank you for informing us about this issue.

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TPS25983: Multiple problems with Excel Calculator