State-plane trajectories used to observe and control the behavior of a voltage step-up DC-DC converter

Burns, William W.; Wilson, Thomas G.

doi:10.1109/pesc.1976.7072920

Cited by 5 publications

(2 citation statements)

References 7 publications

(5 reference statements)

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“…For simple circuit architecture to be realizable, other approaches are primarily based on the cycle-by-cycle control schemes, in which the control switch is controlled by the instantaneous values of the circuit variables. Some examples are the one-cycle control [12], [13], the sliding mode control [14], and the bang-bang control [15], [16]. However, the drawback with these control schemes using one-cycle control is that they have no information on the output load disturbances.…”

Section: Introductionmentioning

confidence: 99%

Fast-Transient Integrated Digital DC-DC Converter With Predictive and Feedforward Control

Foong

Zheng

Tan

et al. 2012

IEEE Trans. Circuits Syst. I

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This paper introduces a dual-mode digital dc-dc converter combining the predictive and feedforward control with the conventional PID controller to achieve fast transient response and low overshoot. An additional predictive or jerk component is added to the conventional PID controller to speed up the transient response and reduce the settling time by approximately 50%. This predictive term is based on the second derivative of the error signal and introduces zero to the loop response which leads to increased bandwidth and improved phase margin. In addition, a feedforward control is also employed to further improve the transient by evaluating the change in the inductor current during the on and off time of the power transistors. Theoretical analysis and simulations were carried out to analyze the proposed design and algorithm. The proposed design is verified on silicon with a prototype of a digital dc-dc converter fabricated in CMOS 0.18 m process. The digital dc-dc converter achieved a settling time of 4 s and an overshoot of 15 mV for a step-load transient of 450 mA, which are improved significantly as compared to the prior arts.Index Terms-Digital dc-dc converter, fast-transient, feedforward control, predictive control.

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Section: Introductionmentioning

confidence: 99%

Fast-Transient Integrated Digital DC-DC Converter With Predictive and Feedforward Control

Foong

Zheng

Tan

et al. 2012

IEEE Trans. Circuits Syst. I

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“…Graphical state-plane technique has been previously used effectively in the analysis and control of inverter and converter circuits [12,13,14].…”

Section: Introductionmentioning

confidence: 99%

State-plane analysis of parallel resonant converter

Oruganti

Lee

1985

1985 IEEE Power Electronics Specialists Conference

121

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A method for analyzing the complex operation of a parallel resonant converter is developed, utilizing graphical state-plane techniques. The comprehensive mode analysis uncovers, for the first time, the presence of other complex modes besides the continuous conduction mode and the the discontinuous conduction mode and determines their theoretical boundaries. Based on the insight gained from the analysis, a novel, high-frequency resonant buck converter is proposed. The voltage conversion ratio of the new converter is almost independent of load.

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