Methods to characterize open-loop dynamics of current-mode-controlled converters

The current-mode-controlled converters are current sources at open loop, and therefore, they cannot operate at a constant-current-type load required for measuring the transfer functions constituting the internal or unterminated set known as the G-parameters, which only describes the dynamics of the voltage-output converter. The paper investigates the methods by means of which the set can be determined by measurements and computationally. The methods are partly derived from the presently developed knowledge on characterizing the current-output converters.

[1]  T. Suntio.  Average and small-signal modeling of self-oscillating flyback converter with applied switching delay , 2006, IEEE Transactions on Power Electronics.

[2]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1976, 1970 IEEE Power Electronics Specialists Conference.

[3]  L. H. Dixon,et al.  Average current mode control of switching power supplies , 1990 .

[4]  S. J. Kim,et al.  Modeling and simulation of spacecraft power systems , 1988 .

[5]  B. Lehman,et al.  Performance prediction of DC-DC converters with impedances as loads , 2004, IEEE Transactions on Power Electronics.

[6]  Jian Sun,et al.  A new approach to averaged modeling of PWM converters with current-mode control , 1997, Proceedings of the IECON'97 23rd International Conference on Industrial Electronics, Control, and Instrumentation (Cat. No.97CH36066).

[7]  T. Suntio,et al.  Modelling and dynamic characterisation of peak-current-mode-controlled superboost converter , 2008 .

[8]  R. D. Middlebrook,et al.  Modeling current-programmed buck and boost regulators , 1989 .

[9]  Chi K. Tse.  Linear Circuit Analysis , 1998 .

[10]  R. B. Ridley,et al.  A new, continuous-time model for current-mode control (power convertors) , 1991 .

[11]  M. Shoyama,et al.  Simplification of transfer function in switching converter with general load impedance , 1995, Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95.

[12]  T. Suntio,et al.  Dynamical profile of a switched-mode converter - reality or imagination , 2007, INTELEC 07 - 29th International Telecommunications Energy Conference.

[13]  Peng Xu,et al.  Topologies and design considerations for distributed power system applications , 2001, Proc. IEEE.

[14]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1977 .

[15]  T. Suntio,et al.  Dynamical Modeling and Characterization of Peak-Current-Controlled Superbuck Converter , 2008, IEEE Transactions on Power Electronics.

[16]  R. D. Middlebrook,et al.  Input filter considerations in design and application of switching regulators. , 1976 .

[17]  Tomi Roinila,et al.  Dynamical modelling of peak-current-mode-controlled converter in continuous conduction mode , 2007, Simul. Model. Pract. Theory.

[18]  S. Luo,et al.  A review of distributed power systems part I: DC distributed power system , 2005, IEEE Aerospace and Electronic Systems Magazine.

[19]  Milan M. Jovanovic,et al.  Analysis and design of self-oscillating flyback converter , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[20]  Teuvo Suntio.  Unified average and small-signal modeling of direct-on-time control , 2006, IEEE Transactions on Industrial Electronics.

[21]  C. K. Michael Tse,et al.  Circuit Theoretic Classification of Parallel Connected DC–DC Converters , 2007, IEEE Transactions on Circuits and Systems I: Regular Papers.

[22]  Teuvo Suntio,et al.  Load-imposed instability and performance degradation in a regulated converter , 2006 .

[23]  B. Lehman,et al.  Accurate loop gain prediction for DC-DC converter due to the impact of source/input filter , 2005, IEEE Transactions on Power Electronics.

[24]  V. Varoli,et al.  Two-part characterization of PWM voltage regulators at low frequencies , 1988 .

[25]  Cecil Deisch,et al.  Simple switching control method changes power converter into a current source , 1978, 1978 IEEE Power Electronics Specialists Conference.

[26]  Nathan O. Sokal,et al.  Near-Optimum Dynamic Regulation of DC-DC Converters Using Feed-Forward of Output Current and Input Voltage with Current-Mode Control , 1986, IEEE Transactions on Power Electronics.

[27]  Teuvo Suntio,et al.  Analysing the dynamics of regulated converters , 2006 .