Current-mode BiCMOS sliding-mode controller circuit for AC signal generation in switching power DC-DC converters

This communication describes the design of a microelectronic BiCMOS analog circuit, intended to be applied to the sliding-mode control of switching DC-DC power converters for the application of generating a sinusoidal signal with externally adjustable amplitude, frequency and offset. The circuit implements a sliding law over a nonlinear autonomous switching surface. The proposal of this analog design, which operates in current-mode, represents good performance as long as operation speed, power consumption, suitability for low voltage operation and interference robustness are concerned. The main circuit is composed of externally linearized transconductors based on current conveyors, current-mode full-wave rectifiers and transimpedance high-speed comparators, as well as bipolar translinear squaring cells. HSPICE transistor-level simulations for a BiCMOS 1.2 /spl mu/m technology validate the functionality of the proposed sliding-mode controller implementation.

[1]  I. O'Connor,et al.  An analog beam–forming circuit using switched–current delay lines , 1998, Proceedings of the 24th European Solid-State Circuits Conference.

[2]  B. Stefanelli,et al.  An analog beam-forming circuit for ultrasound imaging using switched-current delay lines , 2000, IEEE Journal of Solid-State Circuits.

[3]  G. Pearce,et al.  Analogue IC Design: the Current Mode Approach , 1992 .

[4]  R. Domínguez-Castro,et al.  High resolution CMOS current comparators: design and applications to current-mode function generation , 1995 .

[5]  E. Fossas,et al.  Sliding mode control of a buck converter for AC signal generation , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).

[6]  Hebertt Sira-Ramírez,et al.  Sliding motions in bilinear switched networks , 1987 .

[7]  Chin-Long Wey,et al.  Simple low-voltage high-speed high-linearity V-I converter with S/H for analog signal processing applications , 1996 .

[8]  Vadim I. Utkin,et al.  Sliding Modes and their Application in Variable Structure Systems , 1978 .

[9]  Chi K. Tse,et al.  A novel method for elimination of line-current harmonics in single-stage PFC switching regulators , 1998 .

[10]  Bradley A. Minch,et al.  Analysis, synthesis, and implementation of networks of multiple-input translinear elements , 1997 .

[11]  Kari Halonen,et al.  A current mode-Modulator Based on the S2I Error Compensation technique , 1995 .

[12]  I. Husain,et al.  Sliding mode control of the Cuk converter , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[13]  M. Carpita.  Sliding Mode Controlled Inverter with Switching Optimization Techniques , 1994 .

[14]  L. Martinez-Salamero,et al.  General purpose sliding-mode controller for bidirectional switching converters , 1998, ISCAS '98. Proceedings of the 1998 IEEE International Symposium on Circuits and Systems (Cat. No.98CH36187).