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Modelling the UCC3800 controller in SPICE with the electrothermal phenomena taken into account


Krzysztof Górecki, Department of Marine Electronics, Gdynia Maritime University, Morska 83, 81-225 Gdynia, Poland.



A new electrothermal compact model of the current mode pulse width modulation controller—UCC3800—dedicated for SPICE is proposed in this paper. The form of this model is presented and described in detail. The results of the experimental verification of the model are also presented for the device operating in the test circuit. It is shown that self-heating influences essentially the characteristics of the considered device and the proposed model is of good accuracy. Copyright © 2011 John Wiley & Sons, Ltd.