Facing obsolescence problem in FPGA based PCBs. Is it wise to mount FPGA on piggy backed board instead of assembling the FPGA directly on PCB?

Question

anandraj_s_intel · Answer

Hi Goswami,Yes, we can use piggyback boards or a socket for FPGA. In ATE testing we use sockets on load board. You can contact Yamaichi for sockets or other vendors.Look below links which are usefulhttps://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an080.pdf https://www.intel.com/content/www/us/en/programmable/support/support-resources/operation-and-testing/packaging-and-thermal/dev-layout_socket.htmlRegardsAnand

sgosw7 · Answer

Thanks for the response. Do you mean irrespective of speed such connectivity not an issue? I studied some literature where they are advising to be very carefull in FPGA board design about impact of discontinuities arises out of such connectivities mostly on reflection and jitter. Is any specific test to be done to qualify such deisgn on socket or piggybacked connectivity?

anandraj_s_intel · Answer

​Hi Goswami,I am talking about connectivity only. Regarding speed, Socket &amp; piggyback board design Should meets timing requirements.Is any specific test to be done to qualify such design on socket or piggybacked connectivity? Let me check and come backRegardsAnand

anandraj_s_intel · Answer

Hi Goswami,Sorry for the delay,Is any specific test to be done to qualify such design on socket or piggybacked connectivity?There is no official socket design/piggyback connectivity test specification.You can discuss with the socket vendor directly or board design team for more input. Intel FPGA can offers is the FPGA packaging mechanical spec in below link.        https://www.intel.com/content/www/us/en/programmable/support/literature/lit-index/lit-pkg.html RegardsAnand

sgosw7 · Answer

Hi Anand,
It is great to receive your response. I could understand that while doing such design care is needed. I will go through the link materials and take help of your forum if required.
Many many thanks
Goswami

On 11-06-2019 14:29, Intel Forums wrote:

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Facing obsolescence problem in FPGA based PCBs. Is it wise to mount FPGA on piggy backed board instead of assembling the FPGA directly on PCB?

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