电感器
电容器
方案(数学)
电流(流体)
电压
电气工程
电压调节器
调节器
电荷(物理)
相(物质)
充电泵
材料科学
工程类
物理
化学
数学分析
生物化学
数学
量子力学
基因
作者
Jeong-Hyun Cho,Hong-Hyun Bae,Gyu-Wan Lim,Tae‐Hwang Kong,Jun‐Hyeok Yang,Hyun‐Sik Kim
出处
期刊:IEEE Journal of Solid-state Circuits
[Institute of Electrical and Electronics Engineers]
日期:2024-02-09
卷期号:59 (8): 2529-2544
标识
DOI:10.1109/jssc.2024.3360708
摘要
This article presents a fully integrated voltage regulator (FIVR) featuring a high power density, fast dynamic voltage scaling (DVS), and self-balanced inductor currents. The proposed two-phase 2L1C buck converter topology can 2 $\times$ reduce the number of power switches and flying capacitors (CF) compared to the conventional two-phase three-level (2P3L) converters while inheriting the benefit of a lower switching voltage. The single-CF-based self-balancing of the inductor currents with no extra overhead is a key contribution to this work. For the high scalability of the 2L1C topology, the inter-channel balancing (ICB) scheme is also presented. Moreover, the proposed charge-recycling gate driver is capable of reducing the switching power loss. The proposed two-phase FIVR chip with on-chip spiral inductors of 2 nH was fabricated in a 55-nm CMOS process. The chip operating at 200 MHz/phase showed a 45-V/ $\mu $ s DVS rate and a transient slew rate of 40 mA/ns. The measured power density and the peak efficiency were 0.9 W/mm $^2$ and 79.1%, respectively. The ICB scheme was demonstrated with the four-phase VR chip able to supply a maximum output power of 2 W.
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