Hi, We are using UC2845 IC PWM controller in out design of fly back convertor but it is causing instability . We are simulating our fly back circuit on LT spice using LT1241 since UC2845 model is not available on the TINA simulation tool. I request you to give inputs why our fly back circuit which takes 28V input and gives 5V output gets unstable after few miliseconds. instability means this 5V output is connected to another regulator circuit which takes this 5V as input, when this regulator load is removed from the circuit the flyback goes unstable and does not give the output that it is intended to.
Sent to non-isolated DC/DC
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