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1. A High Gain DC-DC Topology Based on Two-Winding Coupled Inductors Featuring Continuous Input Current

   https://doi.org/10.1109/ECCE44975.2020.9235400  

   Mahmoudi, Mohsen ; Ajami, Ali ; Babaei, Ebrahim ; Abdolmaleki, Nima ; Wang, Caisheng ( October 2020 , 2020 IEEE Energy Conversion Congress and Exposition (ECCE))

   null (Ed.)

   A high-voltage-gain dc-dc converter topology is proposed for renewable energy applications. The proposed coupled-inductor-based high-gain dc-dc converter features reduced input current ripple. The semiconductor elements voltage spikes due to the leakage inductance are prevented through the use of a clamping circuit. The Clamping circuit helps recover the leakage inductance stored energy, which causes voltage spikes on the switch. This results in the selection of elements with lower voltage ratings. Power switches with lower voltage ratings lead to lower conduction losses and improved system efficiency. The DC component of the inductor magnetizing current is zero. Consequently, no energy is stored in the inductor core, and the losses are further reduced. 

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2. Optimal-Frequency Critical Soft Switching Method of Synchronous DC/DC Converter Based on Model Predictive Control

   https://doi.org/10.1109/APEC.2019.8721886  

   Zhou, Liwei ; Preindl, Matthias ( March 2019 , IEEE Applied Power Electronic Conference and Exposition (APEC))
3. Analysing dynamics and synthesising a robust vector control for the dc-voltage power port based on the modular multilevel converter in multi-infeed AC/DC smart grids

   https://doi.org/10.1049/iet-stg.2019.0017  

   Davari, Masoud ; Gao, Weinan ; Blaabjerg, Frede ( December 2019 , IET Smart Grid)
4. An Efficient Complementary Topology Switched-Capacitor Based DC-DC Converter

   https://doi.org/10.1109/MWSCAS.2018.8624073  

   Lu, Ruikuan ; Haider, Mohammad R ; Massoud, Yehia ; Uddin, Nasim ( August 2018 , 2018 IEEE 61st International Midwest Symposium on Circuits and Systems (MWSCAS))

   This paper proposes a complementary topology for Switched-Capacitor (SC) DC-DC converter to enhance the dynamic response. For battery charging unit with faster charging time requirement, one of the major restrictions comes from the equivalent output resistance of the SC DC-DC converter. By connecting one completely symmetric SC converter as complementary topology with the original single converter, the proposed SC DC-DC converter topology decreases the equivalent output resistance down to half. Simulated in 0.13-μm standard CMOS process, the simulation results show that this complementary SC converter gains faster dynamic response, shorter charging time, and higher energy-conversion efficiency. 

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5. A Comprehensive Analysis of Charge-Pump-Based Multi-Stage Multi-Output DC-DC Converters

   https://doi.org/10.1109/ISCAS51556.2021.9401129  

   Danesh, Ahmad Reza ; Heydari, Payam ( May 2021 , IEEE International Symposium on Circuits and Systems)

   null (Ed.)

   This paper presents an analytical model for calculating the output voltage and the power efficiency of multi-stage multi-output (MSMO) DC-DC converters (DDC) that use charge pump cells for boosting the voltage. Various cases such as multi-output current consumption and its effects on the output voltage and the power efficiency are studied. Based on the model, a tapered design approach is proposed that can bolster the power efficiency and lower the output voltage drop of MSMO DDCs. Moreover, a charge-pump-based DDC is introduced and designed to verify the proposed model. Simulation results using a standard high-voltage 180-nm CMOS technology affirms the accuracy of the presented model. 

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