# DC gain loss model and optimal choice of switching frequency and turns ratio for high gain, high power, phase modulated resonant transition converters

Abstract: The phase modulated full bridge resonant transition converters are widely used for high gain, high power applications. For such applications, the difference in the output voltage predicted from the lossless DC gain model and the actual output voltage is significant. Hence the DC gain loss model for this converters is proposed and analyzed in this paper. The six intervals of operation of the converter are analyzed with non-ideal parameters like winding resistance (R L ) of the output filter inductor, on-state resistance (R on ) of MOSFETs, resistance (R diode ) and forward voltage drop (V D ) of output rectifier diodes. The DC gain loss model is derived from the analysis of these intervals. The optimal choice of turns ratio and switching frequency based on the proposed DC gain loss mode is presented. The proposed DC gain loss model is validated in the simulations. The experimental prototype for 250 W is implemented, verifying the model and design presented in this paper.

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### Cites methods from "DC gain loss model and optimal choi..."

...The dc gain loss model is proposed and analyzed for PMRTC [22] considering the nonideal parameters along with the virtual (damping) resistance Rd (representation of the duty loss)....

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##### References

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### "DC gain loss model and optimal choi..." refers background or methods in this paper

...Loss analysis for this converter is presented in [6]....

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...Pole-Pole voltage (vab) and transformer primary current (iac) waveforms of a PMC converter [5, 6] are shown in Fig....

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...For ZVS operation from 10 % of the load, required (Llk) is designed [6]....

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...Small signal model for PMC is presented in [1, 6, 8, 11], which is used for the feedback control implementation....

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...Design guidelines for ideal PMC is presented in [6]....

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215 citations

### "DC gain loss model and optimal choi..." refers methods in this paper

...Small signal model for PMC is presented in [1, 6, 8, 11], which is used for the feedback control implementation....

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93 citations

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