A 580 kHz switching regulator using on-off control

The analysis and design of a 580 kHz switching regulator incorporating a series-resonant converter is described. On-off control is used in the feedback loop of the regulator to achieve regulation of the output voltage. An easy-to-use graphical method of analysis of transient currents is introduced as a tool for the analysis and design of the regulator. The 40W regulator circuit which has been built shows exceptionally good transient load regulation and high efficiency.