Intel® Enpirion® Power Solutions
Support for Intel® Enpirion® DC-DC Step-Down Power Converters
Announcements
This forum offers only peer-to-peer support. Thank you!

EP53F8QI cold start problem

EDing
Partner
216 Views

We have discovered that in our current shipping products we have a cold start issue below -30C (recycling power at that temp). Below is what I was able discover in EP53F8QI. Problem is not seen on all the products but is seen on a few (~5-6) that we know off.

This is a shipping product so it would be hard to make any changes to the design at this time.

 

0 Kudos
1 Reply
Mostafa_Intel_AE
Employee
181 Views

Hello Ellen,

 

So sorry to hear that, i will send to you an personal email so you can use that email loop for sharing any confidential documents.

I would like to check, if your design has a delay circuit for Enable signal as shown in the datasheet page 12, where this delay required if the devices will work at cold temp to maintain the power on sequencing requirement.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/ds/ep53f8qi_01542.pdf

 

Also please probe PVIN, Enable and Vout signals and share teh scope waveform for start up and shutdown events.

 

Thanks,

Mostafa

Reply