Xerxsea
Junior Member level 1
Hello, I am messing around with learning the push pull topology in LTSpice and am getting very confused with my results. My attempt is to model a circuit based on the attached document
I'm aware in the proposed circuit he uses a optocoupler to drive the gates but in mine I wanted to keep it as simple as possible and move on from there so I have not included the optocouplers, or any relays.
The probes in the attachment with the circuit are located right between the transformer and diodes. I was expecting to see a more positive voltage but I get a square wave ranging from 0.6v to -5.7v. That's barely enough to pass through the Schottky diode. Yet in all the diagrams I've seen they show it becoming forward biased and passing full voltage to the load/ lc filter.
I've tried so many different things to change it and nothing really seems to be doing the trick. I'm very novice in electronics and even more so in using spice but am trying to learn so any help or tips would be greatly appreciated! I've attached some other probes in different pictures i thought might be useful as well.
I'm aware in the proposed circuit he uses a optocoupler to drive the gates but in mine I wanted to keep it as simple as possible and move on from there so I have not included the optocouplers, or any relays.
The probes in the attachment with the circuit are located right between the transformer and diodes. I was expecting to see a more positive voltage but I get a square wave ranging from 0.6v to -5.7v. That's barely enough to pass through the Schottky diode. Yet in all the diagrams I've seen they show it becoming forward biased and passing full voltage to the load/ lc filter.
I've tried so many different things to change it and nothing really seems to be doing the trick. I'm very novice in electronics and even more so in using spice but am trying to learn so any help or tips would be greatly appreciated! I've attached some other probes in different pictures i thought might be useful as well.