← 返回 JSSC 论文列表
📄 下载 JSSC 原文 PDF
JSSC 2013第1期Power ManagementBuck Converter

A 25D Integrated V oltage Regulator Using Coupled-Magnetic-Core Inductors on Sil

提出一种采用硅中介层上定制薄膜磁性电感器的2.5D集成电压调节器。
峰值效率71%,FEOL电流密度10.8A/mm²,电感电流密度1.53A/mm²
集成电压调节器薄膜磁性电感器2.5D集成硅中介层多相降压转换器
创新点1:采用定制薄膜磁性功率电感器,通过优化材料和结构设计,实现了12.5 nH的高电感值和270 DC的低直流电阻,显著提升了电压调节器的效率和功率密度。
创新点2:利用2.5D芯片堆叠技术将多相降压转换器IC与电感器集成,实现了紧凑的系统布局和高电流密度(FEOL电流密度达22.6 A/mm²),同时降低了寄生效应。
创新点3:设计了八耦合电感器结构,通过耦合磁芯优化磁场分布,在仅0.245 mm²的面积内实现了高电感密度(1.53 A/mm²),提升了系统的整体性能和效率(峰值效率达71%)。
创新点4:通过早期电感器原型测试验证了1.8 V:1.0 V和1.8 V:1.2 V转换比下的高效能表现(69%-71%效率),为高密度集成电压调节器提供了可行的技术路径。
Abstract
An integrated voltage regulator (IVR) is presented that uses custom fabricated thin- film magnetic power induc- tors. The inductors are fabricat ed on a silicon interposer and integrated with a multi-phase buck converter IC by 2.5D chip stacking. Several inductor design variations have been fabricated and tested. The best performance has been achieved with a set of eight coupled inductors that each occupies 0.245 and provides 12.5 nH with 270 DC. With early inductor proto- types, the IVR ef ficien