TPS25981: Itimer

Jeff YANG

Genius 5515 points

Part Number: TPS25981

Hi,

Does TPS25981x Itimer have maximum capacitance limitation?

I using the TPS25981 calculator to fill itimer to 800ms seems show some error.

Thanks!

Jeff

5 months ago

0 Arush Gupta 5 months ago

TI__Genius 17105 points

Hi Jeff,

Are they testing this on EVM or customer board or pspice?

We have some guideline in datasheet regarding the itimer pin. I am sharing them here.

Can you share exact issue/error you are facing and the operating conditions of device (include the schematic if possible)

Best Regards,
Arush

0 Jeff YANG 5 months ago in reply to Arush Gupta

Genius 5515 points

Hi Arush,

FYI, it is calculate tool download form TI website.

Thanks!

Jeff

0 Arush Gupta 5 months ago in reply to Jeff YANG

TI__Genius 17105 points

Can you please share the excel sheet. Thank you

0 Jeff YANG 5 months ago in reply to Arush Gupta

Genius 5515 points

Hi Arush,

Here is. We just want to check the maximum Itimer capacitance limitation. thanks!

1581.TPS25981_Design_Calculator.xlsm

0 Arush Gupta 5 months ago in reply to Jeff YANG

TI__Genius 17105 points

Hi Jeff,

I checked the issue in the design calculator. The issue is that it wasn't able to find the nearest standard value in the look up table. As such there is no limit, just following guideline mentioned above is enough.

click resolved if no other follow up questions.

Best Regards,
Arush

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TPS25981: Itimer