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flyback transformer simulation using pspice

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mad_house

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i am wondering, if i cld make a flyback transformer (inductor transformer) in pspice and later use it in flyback smps converter and c for simulations in pspice... direct model of such flyback transformer is not available.. if sumbdy cld help me out in dis...
attaching the inductor transformer wich i want
 

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atripathi

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Yes. you should be able to simulate flyback transformer in PSpice.
DO you have design parameters available with you? based on that one can model the transformer model

Let's take a example where Flyback primary is 1mH, turn ratio is 1:2, primary and secondary winding resistances are 1m & 2m ohms respectively

Model would be

.subckt FLBTR 1 2 3 4
Lp1 1 2x 1m
Rp1 2x 2 1m
LS1 4 3x 4m ; Primary inductance * turn ratio *turn ratio
RS1 3x 3 2m
K1 LP1 LP2 1
.ends

Connect Pin 1 as primary + terminal
Connect Pin 2 as primary - terminal
Connect Pin 3 as Secondary + terminal
Connect Pin 4 as Secondary - terminal

Hope this helps.
 

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