TPS2373: CLSA/CLSB acceptable resistance range

Hello Thomas-san,

Thank you for your quick response. I think that Table1 shows TYP value of CLSA/CLSB resister. How many percentage can TPS2373 accept for each resister? E.g. 1210ohm +/?% can be acceptable?

Thanks,

Koji Ikeda

Hello Felix-san,

Thank you for your comment. However, I think that This information on the application material means that EVM uses 1% resister, not acceptable resistance range...

Hello Koji-san,

By using 1% tolerance resistors in the EVM BOM, we implicitly recommend staying within 1% of the rated value of those specific resistances to ensure the correct classification current levels are sensed by the PSE.

Are you asking about the classification current levels tolerated by the PSE (as a result of using resistors outside this 1% tolerance)?

Best,
Thomas A.

Hello Thomas-san,

Thank you very much for your support. I understand that TI recommend 1% resister.

During clasification, 2.5V apply to CLSA/CLSB resister, and I_CLS current flow same current as the current on CLSA or CLSB resister? Datasheet page 6 ICLS spec includes any variation like regulated 2.5V output variation? Is my understanding correct?

Could you share clasification current limit on PSE side?  If I_CLS copy the current on CLSA/B resister, I think that this information on PSE side is needed, to consider CLSA/B resister acceptable range.

Hello Koji-san.

I have notified our PSE expert to answer your question.

Thanks,
Thomas A.