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Altera_Forum
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14 years ago

EMP1270 BGA burning up

On a new design we have a repeated problem that the EMP1270 developes a short between pwr and gnd and smokes. Single 3.3v supply operation, all other devices on board on same supply. The only exposed...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Just the CPLD smokes, the 3.3V regulator (5A) is fine. We replace just the CPLD and the board is back up and running fine, till this all happens again. I am in the process of adding a 3.6V zenar diode to the board to try and clamp any 3.3v supply overshoot, and it is an experiment to help pinpoint the issue. The repairs are costly and time consuming, we don't have this capabililty in house. Prefer to solve this without blowing up any more parts.

thanks