Analytical Model of Power MOSFET Switching Losses due to Parasitic Components

Locorotondo, Edoardo; Pugi, Luca; Corti, Fabio; Becchi, Lorenzo; Grasso, Francesco

doi:10.1109/rtsi.2019.8895562

Cited by 35 publications

(10 citation statements)

References 26 publications

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“…Simple simulations were conducted to prove the analysis. Ideal switch models with non-zero on-resistance are used [12]. The supply voltage V i is 1.6 V, and the load current I o is 50 mA.…”

Section: Resultsmentioning

confidence: 99%

Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple

et al. 2021

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This work proposes a piecewise modeling of output-voltage ripple for linear charge pumps. The proposed modeling can obtain a more accurate design expression of power-conversion efficiency. The relationship between flying and output capacitance, as well as switching frequency and optimize power-conversion efficiency can be calculated. The proposed modeling is applied to three charge-pump circuits: 1-stage linear charge pump, dual-branch 1-stage linear charge pump and 4× cross-coupled charge pump. Circuit-level simulation is used to verify the accuracy of proposed modeling.

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“…Simple simulations were conducted to prove the analysis. Ideal switch models with non-zero on-resistance are used [12]. The supply voltage V i is 1.6 V, and the load current I o is 50 mA.…”

Section: Resultsmentioning

confidence: 99%

Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple

et al. 2021

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“…Suppose that the converter operates under continuous conduction mode, there exist three circuit configurations in the SIDO Buck‐Boost DC‐DC converter within each switching period, which can be governed by the exact non‐ideal switching equations. Considering some key non‐ideal elements, 26,27 the exact non‐ideal switching equations are as follows.…”

Section: System Description and Modelingmentioning

confidence: 99%

Design‐oriented analysis of cross‐regulation in single‐inductor dual‐output Buck‐boost DC‐DC converters

Zhang

Jing

Liu

et al. 2021

Circuit Theory & Apps

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In single‐inductor multiple‐output converters, the multiplexing of the inductor at each output port will inevitably lead to severe cross‐regulation effect. This paper aims to investigate the steady state performance and transient state cross‐regulation in the single‐inductor multiple‐output DC‐DC converters. A ripple‐based averaged model is proposed to describe the inherent cross‐regulation characteristics of single‐inductor dual‐output (SIDO) Buck‐Boost DC‐DC converter by considering the three piecewise ripple of the inductor current. Then, the steady state performance analysis is carried out to show the cross‐coupling effect on the power distribution relationship and voltage gains of the two output ports. Furthermore, the nonlinear modal series representation is derived to describe the transient behavior of SIDO converter under different load disturbances. More significantly, based on the nonlinear modal analysis, the cross‐regulation factors are proposed to evaluate the influence of some key circuit parameters on the transient state cross‐regulation. It is found that increasing kp2 may improve the transient cross‐regulation performance of the output voltages, but non‐ideal factor VF has little influence on the transient cross‐regulation. This provides much design‐oriented information to suppress the cross‐regulation and optimize the transient performance of the SIDO converter. Finally, the effectiveness of the above analysis is verified by the experimental results. This paper proposes one design‐oriented analysis method to investigate the cross‐regulation in the SIDO DC‐DC converters based on the ripple‐based averaged model. Firstly, the steady state analysis is carried out to show the cross‐coupling effect on the power distribution of the two output ports. Then, according to the nonlinear modal analysis, the cross‐regulation factors are defined to identify the key parameters for the transient cross‐regulation, which provides some design‐oriented information to suppress the cross‐regulation.

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“…However, its impact is observed especially on the energy losses. In the literature, many studies [36][37][38][39] are focused on the analysis and the modulation of non-ideal DC-DC power converter operating on the discontinuous conduction mode DCM and the continuous conduction mode CCM. Reatti et al [39] presented nonlinear models of both buck and boost converters for the ideal case ( without parasitic) and the non-ideal case (with parasitic) operating on the CCM.…”

Section: Effects Of Parasitic Componentsmentioning

confidence: 99%

“…The proposed model improves several existing models in both time and frequency domains. Locorotondo et al [38] focused in the effect of parasitic elements of the MOSFET component of DC-DC converter regarding the effect of nonlinear junction capacitances and the stray inductances in terms of overshoot, ringing, and energy losses. Therefore, the model of the DC-DC boost converter was made using the SIMSCAPE library, which provides a more realistic modeling of physical components taking into account the following parasitic components.…”

Section: Effects Of Parasitic Componentsmentioning

confidence: 99%

A Novel Two Stage Controller for a DC-DC Boost Converter to Harvest Maximum Energy from the PV Power Generation

et al. 2020

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In this article, an efficient and fast two-stage approach for controlling DC-DC boost converter using non linear sliding mode controller for a PV power plant is proposed. The control approach is based on two online methods instead of using the conventional combination of online and offline methods to harvest maximum energy and deliver an output PV voltage with reduced ripples. The proposed two-stage maximum power point tracking (MPPT) control can be integrated into many applications such as hybrid electric vehicles. Simulation results compared with the standard approaches P&O prove the tracking efficiency of the proposed method under fast changing atmospheric conditions of an average 99.87% and a reduced average ripple of 0.06. The two-stage MPPT control was implemented involving the embedded dSPACE DSP in comparison to the classical P&O to prove the efficiency and the validity of the control scheme. The experimental set-up system was carried out on boost converter and programmable DC electronic resistive load to highlights the robustness of the proposed controller against atmospheric changes and parametric variation.

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Analytical Model of Power MOSFET Switching Losses due to Parasitic Components

Cited by 35 publications

References 26 publications

Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple

Optimization of Charge Pump Based on Piecewise Modeling of Output-Voltage Ripple

Design‐oriented analysis of cross‐regulation in single‐inductor dual‐output Buck‐boost DC‐DC converters

A Novel Two Stage Controller for a DC-DC Boost Converter to Harvest Maximum Energy from the PV Power Generation

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