积层(Build-up)封装工艺的发展及其设计挑战(2)
Build-up packaging technology development and design challenge(2)
摘要
(接上期)其它建立在积层层中,作为电源岛(Pls)层面(15um铜厚)能加强电源网络的分布。这些被添加到所有的层面中,包括那些分配到信号打线的层。例如微处理器的芯板区域,它只有非常少的信号需要布线但对高电流有很大的需求。电源岛的建立能给店员管理带来很多益处,但也成为信号层限制打线量的一个因素。将电源岛尽可能接近芯片能带来极大的益处。分配电源岛给特定电源区域能优化总的电流控制。使用电源岛能抵消一些不利影响,
出处
《印制电路信息》
2011年第6期7-13,共7页
Printed Circuit Information
参考文献24
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