JSSC 2019第3期Power Management28nm

A Fully Integrated Li-Ion-Compatible Hybrid Four-Level DCDC Converter in 28-nm F

本文提出了一种兼容锂离子的全集成混合四电平DC-DC转换器，适用于穿戴设备和物联网应用。

28nm FDSOI, 0.6-1.2V输出, 2.8-4.2V输入, 78%峰值效率, 200MHz开关频率

锂离子兼容四电平转换器穿戴设备物联网高效能

▸使用堆叠1.5V晶体管实现高效能

▸利用功率级内部节点作为驱动电源，无需专用电源轨

▸采用DCM模式和PFM调制实现低负载高效能

Abstract

This paper presents a Li-ion-compatible fully integrated hybrid dc–dc converter implemented in 28-nm FDSOI. A modiﬁed four-level converter is proposed to achieve high efﬁ- ciency while operating from the 2.8–4.2-V Li-ion battery range by using stacked 1.5-V transistors. In this paper, the proposed driver architecture exploits the internal nodes of the power stage as power/GND rails for drivers, eliminating the need for dedicated power rails, level shifters, or stacked drivers. The proposed conve