ISE Impact和XC92588XL发热

嗨，大家好！
在这里新兴，并且很高兴能够了解Xylinx的设计和编程:)我正在使用XC92588XL进行设计并且遇到了问题。
我正在制造一块工作电压为3.3V的现有电路板。
然而，在ISE iMPACT中编程后，电源读取2.5V，芯片开始变得非常热！
显然只有在编程之后才会发生短路...
这是怎么发生的？
我想我得到了一批糟糕的筹码。
为了让我编程，每个都需要用“覆盖写保护”擦除。
这让我觉得他们以前用过。
我也从AliExpress的一个非常可疑的消息来源得到它们。
香港专业教育学院已经尝试了3个芯片，结果相同：/
注意，一旦我编程，它确实说“程序完成”之后我做了一个快速校验和检查，它说：
“'1'：计算的校验和为c0e0'1'：计算的校验和与文件校验和匹配”
但是我必须快速擦掉芯片，否则它会明显爆炸！
完全坚持这一点，并会喜欢任何帮助。
我已经从电路板上移除了所有其他IC，以便将其作为问题隔离到CPLD。
我应该订购更多芯片吗？



以下为原文

Hi everyone!
  New here and excited to be learning about Xylinx designs and programming :)  I'm working with a design using a XC92588XL and have come up against a wall.  I'm JTAGing an existing board with a working 3.3V supply.  However, after programming in ISE iMPACT The supply reads 2.5V and the chip starts getting *VERY* hot!  There is obviously a short that occurs only after programming...

How does this happen?  I'm thinking I got a bad batch of chips that were pulls maybe.  Each one has required erasing with "override write protect" in order for me to program.  This makes me think they were used before.  I also got them from a very dubious source on AliExpress.  Ive tried 3 chips already with the same result :/

Note, once I program it does say "program completed"  afterwards I do a quick checksum check and it says:
"'1': Calculated checksum is c0e0
'1': Calculated checksum matches the file checksum"

but I have to erase the chip quickly or it will obviously blow up!

Totally stuck on this and would love any help.  I have removed every other IC from the board in order to isolate it down to the CPLD as the issue.  Should I order more chips?