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Flyback simulation with auxiliary winding using current mode controller UC3842d8



Hi, there!

We are making a flyback circuit with UC3842D8. We are using auxiliary winding to supply its VDD pin as usual flyback does. So here we need to simulate it using pspcie model of  UC38C42D8 provided by TI.

We made the flyback design using the model editor and trying to trigger it's mosfet using UC3842d8. But I am unable to simualte it's performance since the UC3842d8 is unable to trigger the pwm's to the mosfet. Can someone help me out from this simulation of flyback. Our design is dealing with 400v input to primary of transformer and it will be transformed to 3.3v,5v,15v.

Thanks.