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TMS320F28P650DK: 芯片的发热问题

Part Number: TMS320F28P650DK


TMS320F28P650D NFBGA (NMR)  169pin芯片可以正常使用但是发热到100°以上,帮忙看看原理和布线是否有问题?如果没有是否为芯片本身有问题.

类似的应用NFBGA (ZEJ)  256pin芯片可以正常,没有这种发热问题.