TI TPS54x60

It is just the test condition to insure that the EN voltage is above and below the EN threshold voltage respectively.

Trying to get an idea for worst-case when calculating start and stop voltages. 

The enable voltage and hysteresis current already has minimums / maximums so the only variable that doesn't is the enable pin input current.  However, the input current is still part of the equation.

Can you provide any additional information to help get worst case start / stop voltage?

Which part specifically?  we may have some char data.

TPS54060

TPS54160

TPS54260

TPS54360

Both the ‘A’ and ‘non-A’ designations if they are different for any reason.  Currently use the ‘non-A’, but are considering going to the ‘A’ since they are recommended.

John, Any char data for these parts?

Any data on these yet?  Please let me know asap.

I don't normally support those devices directly.  It is somewhat complicated to pull the data (it may be bit mapped graphics).  If I have time tomorrow I'll see if I can dig it up.

Thanks John.  If you don't have time is there someone I can contact that supports these devices directly that can dig it up?  Feel free to email me their contact info. I have to get this info somehow.  Thanks for all your help!

Hi John,  have you had a chance to dig up this data?

I'm going to try to dig into this today.  If you are concerned about the EN voltages, let me suggest that you consider the "A" versions only.  IIRC, the tolerance spread is quite wide on the non A versions.

FYI here is the document that shows the EN threshold differences:

http://www.ti.com/lit/an/slva592/slva592.pdf

I had to finish something up today and could not hunt for char data.  But if you are going to use the "A" versions (and I highly recommend it), the published specs in the data sheet are over temperature, not 25C, so you should be able to just go with that.  As you can probably guess, the A version was produced specifically to address the EN threshold variation.