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JSSC 2012第8期Power Management45nm SOIBuck ConverterNeural Network Accelerator

A Switched-Inductor Integrated V oltage Regulator With Nonlinear Feedback and Ne

一款45nm SOI技术的四相集成降压转换器,采用非线性反馈PWM控制,实现快速响应和高效率。
1A/mm电流输出,83%效率,0.66转换比
集成降压转换器非线性反馈SOI技术高频开关网络芯片
创新点1:非线性增益PWM控制(方法创新)。采用无锁存PWM控制结合非线性增益技术,实现了稳定的小信号动态响应和快速大信号瞬态响应(700 ps),相比传统锁存PWM控制器,输出电容需求降低5倍。
创新点2:80MHz高频开关集成空气芯电感(电路创新)。在45nm SOI工艺中集成空气芯电感,实现80MHz高频开关操作,功率密度达1A/mm²,效率83%,转换比0.66,显著提升功率密度和开关频率。
创新点3:网络芯片(NoC)作为数字负载(系统创新)。采用NoC模拟真实数字负载,结合可编程电流源(1A/100ps阶跃斜率),为控制方案特性分析提供高动态测试环境,验证瞬态响应能力。
创新点4:四相集成降压转换器架构(系统创新)。通过多相并联结构优化电流分配,降低纹波并提升整体效率,同时兼容SOI工艺的寄生参数特性。
Abstract
A four-phase integrated buck converter in 45 nm silicon-on-insulator (SOI) tec hnology is presented. The control ler uses unlatched pulse-width modulation (PWM) with nonlinear gain to provide both stable small-signal dynamics and fast re- sponse ( 700 ps) to large input and outp ut transients. This fast control approach reduces the required output capacitance by 5 in comparison to a conventiona l, latched PWM controller at a similar operating point. The co nverter switches package-in - tegrated