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JSSC 2021第12期Power Management0.18µmVCO

A 125-GHz Fully Integrated DCDC Converter Using Electromagnetically Coupled Clas

基于电磁耦合D类LC振荡器的125GHz全集成DCDC转换器，实现高功率密度和高效率。
0.18µm CMOS, 1.61mm²/0.37mm², 1W/mm²峰值功率密度, 12mV纹波
全集成DCDC转换器电磁耦合D类振荡器高功率密度准绝热开关
▸基于电磁耦合D类LC振荡器的新拓扑结构
▸采用准绝热开关技术实现GHz级开关频率
▸四相电磁功率传输方案减少输出电压纹波
Abstract
Fully integrated power management circuits are promising candidates to provide small form factors and meet high power density demand of modern computing platforms. This article presents a new fully integrated dc–dc converter topology based on electromagnetically coupled class-D LC oscillators that enables up to 2.5 GHz switching frequency, allowing aggressive scaling of the on-chip passives. On-chip transformers and flying capacitors are designed to electromagnetically couple the two oscillators,