Switching regulator using a quadratic boost converter for wide DC conversion ratios

A controller design methodology for a quadratic boost converter with a single active switch is developed. This converter has two LC filters; thus, it will exhibit fourth-order characteristic dynamics. However, only the first inductor current and the output capacitor voltage are selected for feedback purposes. This current can also be used for one-cycle overload protection; therefore, the full benefits of current-mode control are maintained. Average current-mode control is selected over peak current-mode control because this strategy provides a faster transient response and better noise immunity. The high-gain compensator of the current loop helps tracking the current programme with a high degree of accuracy. The robustness of the proposed controller is tested under changes in the input voltage, output load and reference signal.

[1]  B. H. Cho,et al.  Analysis and interpretation of loop gains of multiloop-controlled switching regulators (power supply circuits) , 1988 .

[2]  Koosuke Harada,et al.  The Cascade Connection of Switching Regulators , 1976, IEEE Transactions on Industry Applications.

[3]  Jesus Leyva-Ramos,et al.  Multiloop controller design for a quadratic boost converter , 2007 .

[4]  J. Leyva-Ramos,et al.  Modeling of switch-mode dc-dc cascade converters , 2002 .

[5]  Tore Undeland,et al.  Power Electronics: Converters, Applications and Design , 1989 .

[6]  Geoffrey R. Walker,et al.  Cascaded DC-DC converter connection of photovoltaic modules , 2004 .

[7]  Dragan Maksimovic,et al.  Switching converters with wide DC conversion range , 1991 .

[8]  Jesus Leyva-Ramos,et al.  Modelling and analysis of switch-mode cascade converters with a single active switch , 2008 .

[9]  M.G. Ortiz-Lopez,et al.  Average Current-Mode Control Scheme for a Quadratic Buck Converter With a Single Switch , 2008, IEEE Transactions on Power Electronics.

[10]  Fang Lin Luo,et al.  Positive output cascade boost converters , 2004 .

[11]  Gregor Hoogers,et al.  Fuel Cell Technology Handbook , 2002 .

[12]  J. Leyva-Ramos,et al.  Modeling of a single-switch quadratic buck converter , 2005, IEEE Transactions on Aerospace and Electronic Systems.

[13]  George C. Verghese,et al.  Principles of Power Electronics , 2023 .

[14]  M. Veerachary,et al.  General rules for signal flow graph modeling and analysis of dc-dc converters , 2004, IEEE Transactions on Aerospace and Electronic Systems.

[15]  Fang Lin Luo,et al.  Advanced DC/DC Converters , 2003 .

[16]  M. Veerachary.  Modelling and analysis of cascade step-down converters , 2005 .

[17]  Mummadi Veerachary.  Signal flow graph modelling of multi-state boost DCDC converters , 2004 .

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

[19]  Fred C. Lee,et al.  Small-signal modeling of average current-mode control , 1993 .

[20]  Muhammad H. Rashid,et al.  Power electronics handbook , 2001 .