Control study of a 500 kHz, 250 W DC-DC converter

Circuit waveforms and control strategies for a multiple-output pseudoresonant DC-DC converter described by R.A. Fisher et al. (1988) have been studied through multilevel simulation using a mix of behavioral and device models. Circuit waveforms show the expected pseudoresonant switching. Voltage-mode...

Full description

Saved in:
Bibliographic Details
Published inProceedings, Fourth Annual IEEE Applied Power Electronics Conference and Exposition pp. 433 - 438
Main Authors Ludwig, G.W., Franz, G.A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1989
Subjects
Circuit simulation
Circuit topology
Computational modeling
DC-DC power converters
Pulse transformers
Pulse width modulation
Pulse width modulation converters
Space vector pulse width modulation
Switches
Voltage control
Online AccessGet full text

Cover

More Information
Summary:Circuit waveforms and control strategies for a multiple-output pseudoresonant DC-DC converter described by R.A. Fisher et al. (1988) have been studied through multilevel simulation using a mix of behavioral and device models. Circuit waveforms show the expected pseudoresonant switching. Voltage-mode and current-mode control are both found to be feasible. Current-mode control, when properly implemented, has the advantage of reducing the inherent second-order system response to a first-order one. The converter's potential instability can be eliminated with the addition of a stabilizing ramp on the control current. Regulating the current in the transformer primary gives behavior similar to voltage-mode control.< >
DOI:10.1109/APEC.1989.36995