Hello,
We are using the TPS70950QDBVRQ1 in the product.
Is there any information of using in TJ>125C , the 5V accuracy will become ? percentage ? (Ex: Vin - 5V curve / Output current - 5V curve)
the datasheet's feature shows the over temperature accuracy is 2%
The max junction can be in 150C , but the performance table is only to TA 125C.
or is that mean TA = 125C but TJ = 150C performance?
Thanks for apply~
Hi Jonathan,
I have another question.
In the figure , 1.3V accuracy in 85C is better than 125C.
But in 3.3V and 6.5V , the accuracy in 125C is better than 85C.
is there any information about that?
Thanks for apply~
Hi,
For this particular part at light loads it begins to drift high before shutting off. The differences from 85C to 125C could be attributed to this rising behavior, it does not necessarily imply that the part is more accurate, just that Vout has increased.
We do not have any additional data for Tj at 150C, all that I can say is that above 125C the part does begin to exhibit drift to a much higher degree than over the rest of the temperature range. I do not have a value, but it will perform worse at 150C in terms of output voltage accuracy. The above graphs shows a couple units averaged to show the high temp drift the part exhibits before thermal shutdown
Regards,
John
