A unified SPICE compatible average model of PWM converters

Amran, Y.; Huliehel, F.A.; Ben‐Yaakov, S.

doi:10.1109/63.97756

Cited by 63 publications

(25 citation statements)

References 7 publications

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“…For the averaged switch model presented in [6], the transfer function under constant terminal voltage condition is found to be This is again different from (42) which explains why the resulting model predicts inaccurate high-frequency poles. In addition, another constraint used in [14], which is also based on (5) but calculates from the second subinterval, i.e.,…”

Section: Duty-ratio Constraintsmentioning

confidence: 99%

Averaged modeling of PWM converters operating in discontinuous conduction mode

Sun

Mitchell

Greuel

et al. 2001

IEEE Trans. Power Electron.

465

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Abstract-Various aspects of averaged modeling of hardswitching pulse-width modulated (PWM) converters operating in the discontinuous conduction mode (DCM) are studied. A more streamlined modeling procedure is proposed which serves as a general framework for comparing different models. A duty ratio constraint that defines the diode conduction interval is identified to be the key to accurate prediction of high-frequency behavior. A new duty-ratio constraint is proposed that leads to full-order averaged models of DCM converters. Numerical analyses and experimental measurements confirm that the new models correctly predict the small-signal responses up to one third of the switching frequency and are more accurate than all previous models. Moreover, new analytical results are included to show the origin of the high-frequency pole in DCM operation and to explain why the full-order model is capable of accurately predicting it. Averaged circuit counterparts of the new models are developed in the form of averaged switch models to facilitate circuit simulation.

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Section: Duty-ratio Constraintsmentioning

confidence: 99%

Averaged modeling of PWM converters operating in discontinuous conduction mode

Sun

Mitchell

Greuel

et al. 2001

IEEE Trans. Power Electron.

465

View full text Add to dashboard Cite

show abstract

“…Implementation of (7) requires an E-value source governed by two 4 Advances in Power Electronics control variables v cp and V ab . Note that application of (7) requires a preliminary calculation or simulation to correctly establish the system constant k [7,8].…”

Section: On Duty Cycle Programmingmentioning

confidence: 99%

“…Hence, the software Off-Duty Cycle Generator is programmed to calculate both expressions (A.3) and (A.4) and decide on the proper, D off , using the PSPICE minimum function [7]:…”

Section: A a Quick Reference To Sim And D Off Dcgmentioning

confidence: 99%

“…Average modeling of the power stage can also be helpful in simulation as they can be readily implemented using PSPICE behavioral sources [6][7][8]. Average models are continuous and, hence, can be automatically linearized by the PSPICE simulator and prepared for the frequency domain analysis.…”

Section: Introductionmentioning

confidence: 99%

“…The first is modeling the switcher, whereas the second is modeling the PWM modulator. To model the average behavior of switch mode power stages Switched Inductor Model (SIM) was proposed [6][7][8], whereas the PWM duty cycle generation process can be modeled by software Duty Cycle Generator (DCG) approach [8]. The PWM modeling problem is that in practice the switching ripple propagates into the control loop and affects the switch on and off times.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparison of Duty Cycle Generator Algorithms for SPICE Simulation of SMPS

Abramovitz

2012

Advances in Power Electronics

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The paper presents and discusses an algorithm for average modeling of the PWM modulator in switch-mode power systems by general purpose electronic circuit simulators such as PSPICE. A comparison with previous theoretical models is conducted. To test the accuracy of the average PWM models comparison to cycle-by-cycle simulation was conducted. The proposed algorithm shows better accuracy than earlier counterparts.

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Small‐Signal Models of PWM Converters for CCM and DCM

Kazimierczuk

2008

Pulse‐Width Modulated DC‐DC Power Converters

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A unified SPICE compatible average model of PWM converters

Cited by 63 publications

References 7 publications

Averaged modeling of PWM converters operating in discontinuous conduction mode

Averaged modeling of PWM converters operating in discontinuous conduction mode

Comparison of Duty Cycle Generator Algorithms for SPICE Simulation of SMPS

Small‐Signal Models of PWM Converters for CCM and DCM

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