Investigation of capacitor voltage balancing in practical implementations of flying capacitor multilevel converters

Z Ye, Y Lei, Z Liao… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Capacitor voltage natural balancing is an attractive feature of flying capacitor multilevel
(FCML) converters. However, with the commonly used phase-shifted pulsewidth modulation …

State-space modeling and control of flying-capacitor multilevel dc–dc converters

Z **a, K Datta, JT Stauth - IEEE Transactions on Power …, 2023 - ieeexplore.ieee.org
Hybrid and resonant switched-capacitor converters show promise in a number of power
management applications, but are subject to a range of challenges in control and …

Digital predictive current-mode control of three-level flying capacitor buck converters

G Bonanno, L Corradini - IEEE Transactions on Power …, 2020 - ieeexplore.ieee.org
This article investigates the use of digital predictive current-mode control (DPCMC) in dc-dc
three-level flying capacitor (3LFC) buck converters. In particular, stability and flying capacitor …

Sensorless stabilization technique for peak current mode controlled three-level flying-capacitor converters

E Abdelhamid, L Corradini, P Mattavelli… - … on Power Electronics, 2019 - ieeexplore.ieee.org
This article describes a sensorless stabilization technique for peak current mode control of
three-level flying-capacitor (3LFC) buck converters. The technique eliminates the well …

Natural balancing of flying capacitor multilevel converters at nominal conversion ratios

Z **a, BL Dobbins, JT Stauth - 2019 20th Workshop on Control …, 2019 - ieeexplore.ieee.org
This work explores the mechanisms and limitations of natural voltage balancing in flying
capacitor multilevel (FCML) DC-DC converters. A simple discrete-time state space model is …

Constant on/off-time digital current control and design methods in three-level flying-capacitor boost converters for fast transient and voltage balancing

R Garnayak, S Kapat… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Constant on/off-time current-mode control (CMC) techniques are useful for wide-duty-ratio
operations in multilevel flying-capacitor converters. In this article, event-based constant …

State space analysis of flying capacitor multilevel dc-dc converters for capacitor voltage estimation

Z **a, BL Dobbins, JS Rentmeister… - 2019 IEEE Applied …, 2019 - ieeexplore.ieee.org
Flying capacitor multilevel (FCML) converters show great promise for a number of DC-DC
applications, but are subject to problems with voltage balance on the flying capacitors. A …

A hybrid design framework for fast transient and voltage balancing in a three-level flying capacitor boost converter with digital current mode control

R Garnayak, P Majumder, S Kapat… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Multilevel flying capacitor boost (MLFCB) dc–dc converters offer high power density even at
high voltage gain, in which digital control can achieve fast transient, and high efficiency …

Robust single-loop control strategy for four-level flying-capacitor converter based on switched system theory

W Ma, B Zhang, D Qiu - IEEE Transactions on Industrial …, 2022 - ieeexplore.ieee.org
For the four-level flying-capacitor converter (FFCC), it is required to simultaneously control
the output voltage and balance the flying-capacitor voltages. Existing control methods for the …

A Direct 24- to 1-V Multilevel Multiphase Hybrid Buck Converter With Automatic VCF Balancing and Current Sharing Mechanism

Y Zhou, H Wang, Y **ong, X Liu… - IEEE Journal of …, 2023 - ieeexplore.ieee.org
This article presents a multilevel multiphase (MLMP) dual-path hybrid buck converter for
direct 24-to 1-V step-down conversion. Unlike the conventional multilevel buck converter …