Equation (4.3) shows that the output voltage of the converter is independent of output load and it can be controlled by varying the pulse-width angle (J) against any variation in input voltage. Typical characteristics of the converter are shown in Fig. 23. The following points are derived from this figure: (1) The converter maintains moderately good efficiency from full load to reduced load. (2) The control circuit of the converter is relatively simple to design as pulse width angle (^) remains constant from full load to no load. 4.4 A Discussion on DC/DC Resonant Converter Topologies This section presents a comparative discussion towards selecting a particular DC/DC resonant converter topology for a given application. 4.4.1 Series-resonant Converter. The advantages of series-resonant converter topology is that the output voltage is load independent and it maintains excellent efficiency from full-load to reduced load. The pulse width modulated control technique permits the operation of the converter at no-load.
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