This research has followed several directions; selected published results are summarized below.
Modeling, control, and design of PWM power converters

Robert Erickson, Slobodan Cuk, and R. D. Middlebrook, "Large Signal Analysis and Design of Switching Regulators," IEEE Power Electronics Specialists Conference, 1982 Record, pp. 240250.
Stateplane analysis of nonlinear switching regulators having state feedback. Solution for equilibrium points, and the effects of saturation and current limiting.  "Origins of Harmonic Distortion in Switching Amplifiers," Proceedings Fourth Annual International PCI '82 Conference, pp. 567582, March 1982.
A perturbation series analysis is employed to predict harmonic distortion in switching amplifiers. This leads to a series of equivalent circuits that predict approximate magnitudes and phases of each harmonic.
Robert Erickson and R. D. Middlebrook,  Robert Erickson, Bill Behen, R. D. Middlebrook, and Slobodan Cuk, "Characterization of Power MOSFET's in Switching Converters," Proceedings Seventh National SolidState Power Conversion Conference (Powercon 7), pp. D4.1D4.17, March 1980.
 Slobodan Cuk and Robert Erickson, "A Conceptually New HighFrequency SwitchedMode Amplifier Technique Eliminates Current Ripple," Proceedings Fifth National SolidState Power Conversion Conference (Powercon 5), pp. G3.1G3.22, May 1978.
 Robert Erickson, "Synthesis of SwitchedMode Converters," IEEE Power Electronics Specialists Conference, 1983 Record, pp. 922.
The first paper on systematic systhesis of switchedmode converter topologies. Additional papers on converter synthesis are listed on the rectifier page.  I. Horowitz, M. Sidi, and R. Erickson, "Quantitative Feedback Synthesis for Nonlinear SwitchedMode Uncertain Regulators," International Journal of Electronics, Vol. 57, No. 4, pp. 461476, Oct. 1984.
 I. Khan and R. W. Erickson, "Control of SwitchedMode Converter HarmonicFree Terminal Waveforms through Internal Energy Storage," IEEE Power Electronics Specialists Conference, 1986 Record, pp. 1326, June 1986.
 Yungtaek Jang and Robert Erickson, "Physical Origins of Input Filter Oscillations in Current Programmed Converters," IEEE Applied Power Electronics Conference, 1991 Record, March 1991.
 Yungtaek Jang and Robert Erickson, "Physical Origins of Input Filter Oscillations in Current Programmed Converters," IEEE Transactions on Power Electronics, vol 7, no. 4, pp. 725733, October 1992.
 “Optimal SingleResistor Damping of Input Filters,” IEEE Applied Power Electronics Conference, March 1999.
This paper extends Middlebrook's original work on optimum damping of input filters to several additional cases. This material was later incorporated into the textbook chapter on input filter damping.
R. Erickson,  R. Erickson, “DCDC Power Converters,” article in Wiley Encyclopedia of Electrical and Electronics Engineering, vol. 5, pp. 5363, 1999.
 J. Chen, R. Erickson, and D. Maksimovic, "Averaged Switch Modeling of Boundary Conduction Mode DCtoDC Converters," Proc. IEEE Industrial Electronics Society Annual Conference (IECON 01), Nov. 2001.
 A. Prodic, D. Maksimovic, and R. Erickson, "Design and Implementation of a Digital PWM Controller for a High Frequency Switching DCtoDC Power Converter," Proc. IEEE Industrial Electronics Society Annual Conference (IECON 01), Nov. 2001.
 P. Athalye, D. Maksimovic, and R. Erickson, "Averaged Switch Modeling of ActiveClamped Converters," Proc. IEEE Industrial Electronics Society Annual Conference (IECON 01), Nov. 2001.
 Y. Zhang, R. Zane, A. Prodic, R. Erickson, and D. Maksimovic, "Online Calibration of MOSFET OnState Resistance For Precise Current Sensing," IEEE Power Electronics Letters, vol. 2, no. 3, pp. 100103, September 2004.
 P. Athalye, D. Maksimovic, and R. Erickson, "VariableFrequency Predictive Digital Current Mode Control," IEEE Power Electronics Letters, vol. 2, no. 4, pp. 113116, December 2004.
 D. Maksimović, R. Zane, R. Erickson, “Advances in practical highperformance digital control,” invited paper, Digital Power Forum, September 2005.
 D. Friedrichs, R. Erickson, and J. Gilbert, “A New System Architecture Improves Output Power Regulation in Electrosurgical Generators,” 33rd Annual International IEEE Engineering In Medicine and Biology Society Conference, Aug. 2011.
 Robert W. Erickson, “Advances in Averaged Switch Modeling,” SOBRAEP/IEEE Fourth Brazilian Power Electronics Conference, December 1997, invited paper and tutorial seminar.
 Dragan Maksimovic and Robert Erickson, "Advances in Averaged Switch Modeling and Simulation," IEEE Power Electronics Specialists Conference, 1999, tutorial seminar.
 Robert Erickson and Dragan Maksimovic, "A primer on simulation, modeling, and design of the control loops of switching regulators,"IEEE Applied Power Electronics Confernce, March 2003, tutorial seminar.
 R. White, G. Miller, B. Dudman, and R. Erickson, "Recent Developments in GaAs Power Switching Devices Including Device Modeling," IEEE Applied Power Electronics Conference, March 2014.
Magnetics modeling
This series of papers is concerned with modeling switching converter waveforms in multiplewinding transformers and coupledinductors. It specifically addresses prediction of crossregulation in multipleoutput flyback converters, a problem previously considered intractable. An approach is found in which every model parameter can be directly measured in the laboratory, and that explains the observed waveforms and converter performance.

"A Comparison of the Ladder and Full Order Models," IEEE Power Electronics Specialists Conference, June 2001.
The ladder model of multiplewinding transformers has been employed by multiple authors, based on the physical geometry of the windings. It is shown here that this model does not predict the firstorder behavior of multipleoutput flyback converters: regardless of the winding geometry, a fullorder model is required. The extended cantilever model correctly predicts observed waveforms and gives a physical explanation of the relevant phenomena.
K. Changtong, R. Erickson, and D. Maksimovic,  R. Erickson and D. Maksimovic, "Cross regulation mechanisms in multipleoutput forward and flyback converters," IEEE Applied Power Electronics Conference, March 1999, tutorial seminar.
 D. Maksimovic and R. Erickson, “Modeling of Cross Regulation in MultipleOutput Flyback Converters,” IEEE Applied Power Electronics Conference, March 1999.
This paper applies the multiplewinding magnetics models of other papers listed here, to the difficult problem of predicting crossregulation in multipleoutput flyback converters. These converters are notorious for exhibiting very poor crossregulation. This paper explains how winding geometry governs crossregulation, and it suggests solutions to improve cross regulation.  R. Erickson and D. Maksimovic, “A MultipleWinding Magnetics Model Having Directly Measurable Parameters,” IEEE Power Electronics Specialists Conference, May 1998.
This paper describes the modeling of the flyback transformer of a multipleoutput flyback converter, with a methodology in which every model parameter is directly measured in the laboratory. The resulting model is shown to accurately predict converter waveforms and crossregulation performance.  D. Maksimovic, R. Erickson, and C. Griesbach, “Modeling of CrossRegulation in Converters Containing Coupled Inductors,” IEEE Applied Power Electronics Conference, pp. 350356, Feb. 1998.
 D. Maksimovic, R. Erickson, and C. Griesbach, “Modeling of CrossRegulation in Converters Containing Coupled Inductors,” IEEE Transactions on Power Electronics, vol. 15, no. 4, pp. 607615, July 2000.
Power conservative networks
While it has been well understood that the transformer and gyrator are the only linear powerconservative twoport networks, in the power electronics field we have found applications that require new nonlinear powerconservative systems. These papers explore the fundamentals of these networks. The dependent power source and sink are basic nonlinear elements that arise in the models of these systems whenever buffering conditions are met. The lossfree resistor is a powerconservative network that arises in a number of applications including lowharmonic rectification and DCM converters.
 S. Singer and R. Erickson, “On the buffering condition implied by the stabilization of the output of switchedmode converters,” IEEE Power Electronics Specialists Conference, 1992 Record, pp. 11971201, vol. 2, June 1992.
 S. Singer and R. Erickson, “Controlimplied input/output buffering of power conservative twoport networks,” IEEE International Symposium on Circuits and Systems (ISCAS ’92), pp. 19111913, vol. 4, 1992.
 S. Singer and R.W. Erickson, “PowerSource Element and Its Properties,” IEE Proceedings  Circuits Devices and Systems, vol. 141, no. 3, pp. 220226, June 1994.
 S. Singer and R. Erickson, “Canonical Modeling of Power Processing Circuits Based on the POPI Concept,” IEEE Transactions on Power Electronics, vol. 7, no. 1, January 1992.