Hey Guys,
Can anyone help me here simulating flyback converter ?
I still do not understand how do we calculate the output voltage based on inductance value and turns ratio,
Attaching here .asc file.

Thanks in advance !

 

hi mishra,
One important point with LTS, it requires the Vpeak voltage for V1 ie: 230 *1.414.=325
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hi mishra,
This is what I see with V1 =325Vac Pk
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I still do not understand how do we calculate the output voltage

Have you read this.
There are many other references on the Web.

If you want a regulated 5V output, then you will need feedback from the output to control M1's duty-cycle and/or frequency.

 

hi mishra,
One important point with LTS, it requires the Vpeak voltage for V1 ie: 230 *1.414.=325
E

Thanks for point this out !

 

Have you read this.
There are many other references on the Web.

If you want a regulated 5V output, then you will need feedback from the output to control M1's duty-cycle and/or frequency.

Yes, that i understand.
My thought was, are we able to get 5V or 12V etc at output without having feedback connection.
So there will be some way of transformer turn ratio in ltspice by which we can step down the voltage.

I am not sure how do we define transformer in ltspice.

Thanks !

 

hi mishra,
Checkout this video, 'fesz' is 1stclass with LTSpice.
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Added link:

https://www.analog.com/en/technical-articles/ltspice-basic-steps-for-simulating-transformers.html

 

See

 

See
View attachment 286980

Hey,
Thanks for your post.
Could you please share .asc file ?
Thanks in advance !

 

See http://bordodynov.ltwiki.org/