Title :
Analysis of current-programmed SEPIC DC/DC converter in discontinuous-conduction operating region
Author :
Johnson, Michael J.
Author_Institution :
IBM Power Syst., Endicott, NY, USA
Abstract :
A current-programmed single ended primary inductance converter (SEPIC) topology DC/DC power converter is studied near the threshold of discontinuous operation. Changes in circuit characteristics such as inner loop transfer function as the converter enters the discontinuous region are calculated using average methods, and are compared to measurements. It is demonstrated that the discontinuous SEPIC can exhibit inner loop stability (that is, even with no feedback of the output voltage)
Keywords :
control system analysis; electric current control; power convertors; stability; transfer functions; DC/DC power converter; SEPIC; average methods; circuit characteristics; discontinuous operation; electric current control; inner loop transfer function; measurements; single ended primary inductance converter; stability; topology; DC-DC power converters; Diodes; Equivalent circuits; FETs; Inductors; Power system analysis computing; State-space methods; Switching circuits; Transfer functions; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1993. APEC '93. Conference Proceedings 1993., Eighth Annual
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0983-9
DOI :
10.1109/APEC.1993.290629
