There's a japanese datasheet, but I can only read a few numbers, e.g. VDSS of 650 V.i can find absolutely no data for this chip on the internet
In return, the primary switch losses and required diode voltage rating will be very high.Also, i believe that the low duty cycle was favoured because it means a longer secondary conduction time........which means lower rms secondary diode current....and less dissipation in the secondary diode.
Agreed.Lower RMS currents only yeild higher efficiency if they more than offset the higher switching losses (they don't)
Hmm, yeah I can't see how cross regulation would be affected by DCM vs CCM.In practice cross regulation if just as good in fully DCM designs (it is really determined by coupling)
Right, in CCM you will have two discontinuous current transitions per switching cycle, vs just one for DCM (though the peak of the DCM may be much higher). I think overall the radiated power will be higher in CCM, but will be at a higher frequency (might be preferable in some situations).TRue - lower peak currents allow smaller inputs caps (but not o/p) but not less radiated EMI due to the increased switching noise of the now harder switching in CCM.
Correct.Higher loop gain but a right hand plane zero - in practice DCM is easier and faster re control loops, using simple peak current mode.
This I'm not sure about. Yes, you don't transfer all your energy every cycle, but that doesn't mean you need higher peak currents at the same power level, I think.A careful study of CCM vs DCM will show you that for the same freq and primary inductance CCM has higher peak currents than DCM as the TX energy is not fully transferred every cycle for CCM.
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