Hello everyone,
This is regarding problems 10.4 and 10.10. I am trying to clarify if the CCM3 model should only be used when the transformer in the converter circuit is connected across the diode in the switch (as in the CCM3 equations it is the voltage across the diode switch, E(3,4) that gets divided by the transformer turns ratio). If the transformer in the converter circuit is not connected across the diode (as in the flyback converter), then shouldn't one be able to use the CCM1 model for the switch in that converter?
Thanks,
Nitish Agrawal
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ReplyDeleteAs a follow up to my question, I would like to state that I used the CCM3 Spice model (with n=1) in the flyback converter circuit model (that had the transformer model with n= 0.5) and the plot of ZD simulated came out exactly the same as ZD transfer function calculated by hand.
ReplyDeleteI realized that during hand analysis, I missed the term n^2 in the ZDo expression. That explains why I was getting the same DC value in the simulation (with n=1 set in the CCM3 model).
ReplyDeleteI am still not clear why we need to set n=0.5 in the CCM3 model when the transformer in the converter is not connected across the diode switch.