UCC2897: What difference between UCC2897/UCC2897A

Jeff,

An AE will look into this and comment soon. In general and you will see this on the UCC2897 web page:

The UCC2897 is Not Recommended for New Designs (NRND), replaced By UCC2897A– The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device. TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

There is a difference in the VDD conditions for max and rated when you compare the datasheets.

Hi Brian,

Sorry, after clarify with customer, they used UCC2897A noy UCC2897.
Please help to check the waveform and comment.

Thanks!
Jeff

Hi Jeff,

I am not able to speculate the root cause by the attached waveforms, would you please provide more information including which FET was damage, what was conditions(line, load, start-up steady or dynamic ect.) that the customer met this failure and did them catch any waveforms at the failure moments?

Thanks
Oliver

Hi Oliver,

please refer to below schematic, Q11/Q14/Q15 see the damaged symptom by EOS.

I'm check with customer in which condition, I will reply soon.

3644.SWD-MG-FE24 _ 16_DC in _PSE Iso.pdf

Thanks!

Hi Oliver,

Due to it RMA case, we don't know it happened in which condition, do you have any idea?

Thanks!
Jeff