Adaptive Modulation Control for Multiple-Phase Voltage Regulators

This paper presents a new Adaptive Modulation Control (AMC) method which has proven to be very effective in achieving high bandwidth designs. AMC is a type of nonlinear control since it works only during large dynamic load transitions. Influence of AMC in both the time domain and frequency domain is analyzed. Simulation results and experimental data are included to show a very high bandwidth as well as excellent transient performance.

[1]  Ali H. Nayfeh,et al.  Robust control of parallel DC-DC buck converters by combining integral-variable-structure and multiple-sliding-surface control schemes , 2002 .

[2]  Sudip K. Mazumder,et al.  Design and experimental validation of a multiphase VRM controller , 2005 .

[3]  T. Ninomiya,et al.  Multiphase voltage regulator module with current amplification and absorption technique , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[4]  S. A. Chickamenahalli,et al.  Effect of target impedance and control loop design on VRM stability , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[5]  M. Pong,et al.  A low cost DC-DC stepping inductance voltage regulator with fast transient loading response , 2001, APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181).

[6]  Antonio Testa,et al.  A new VRM topology for next generation microprocessors , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[7]  J. Pleite,et al.  Linear-non-linear control (LnLc) for DC-DC buck converters: stability and transient response analysis , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[8]  R. Miftakhutdinov,et al.  Analysis and optimization of synchronous buck converter at high slew-rate load current transients , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[9]  Peng Xu,et al.  Investigation of candidate topologies for 12 V VRM , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[10]  Fred C. Lee,et al.  Single shot transient suppressor (SSTS) for high current high slew rate microprocessor , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).

[11]  F.C. Lee,et al.  Control-loop bandwidth limitations for multiphase interleaving buck converters , 2004, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04..

[12]  J. Pleite,et al.  Output filter influence on the fast response double buck DC-DC converter (FRDB) , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).